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Improved Turbine Engine Program

The Improved Turbine Engine Program (ITEP) is a United States Army initiative to design, develop, test, and integrate a next-generation turboshaft engine for its fleet of rotary-wing aircraft, primarily to replace the General Electric T700 series engines powering legacy helicopters such as the UH-60 Black Hawk and AH-64 Apache.^[1]^[2] The engine was originally intended to also support the Future Vertical Lift (FVL) program's Future Attack Reconnaissance Aircraft (FARA), but FARA was canceled in February 2024, refocusing ITEP on upgrades to existing platforms.^[3] Originating from the earlier Advanced Affordable Turbine Engine (AATE) program, which focused on maturing key technologies through contracts awarded to General Electric Aviation and ATEC (a Honeywell-Rolls-Royce joint venture) in the mid-2000s, ITEP entered its Engineering and Manufacturing Development (EMD) phase in February 2019 following the Army's selection of GE's T901 engine design over the ATEC HPW3000 contender.^[2]^[1] The program's baseline goals emphasize restoring and enhancing operational capabilities lost due to increasing aircraft weights and demanding environments, with a total estimated acquisition cost of approximately $17.9 billion for 6,258 engines, including research, development, procurement, and operations.^[1] Key performance objectives for the T901 include delivering 3,000 shaft horsepower—a 50% increase over the T700's baseline—while achieving 25% improved fuel efficiency, 20% extended engine life, and full operational capability in high/hot conditions such as 6,000 feet altitude at 95°F temperatures.^[4]^[2] These enhancements incorporate advanced materials like ceramic matrix composites (CMCs) for lighter, heat-resistant components, additive manufacturing for complex parts, and an Engine Health Management System to enable predictive maintenance and modular field repairs, ultimately reducing logistics burdens and supporting Multi-Domain Operations (MDO) by extending range, endurance, and reliability in austere environments.^[5]^[4] As of November 2025, ITEP has progressed to flight testing, with two T901 engines delivered to Sikorsky in June 2024 for integration into UH-60M Black Hawks, followed by ground tests starting in January 2025, first flights in May 2025, and ongoing testing reported as "very successful" in October 2025; however, the program faces uncertainty after the Army proposed its termination in May 2025 amid broader aviation modernization shifts and approximately $1.5 billion in expenditures over two decades, though congressional appropriators restored $175 million in funding and testing continues pending final decisions.^[5]^[6]^[7]^[8]^[9]^[10]^[11]

Background and Objectives

Program Origins

The Improved Turbine Engine Program (ITEP) evolved from the Advanced Affordable Turbine Engine (AATE) initiative, which the U.S. Army launched in late 2006 to address performance limitations of the legacy General Electric T700 engine family in demanding environments. Solicitations for AATE proposals were issued by the Army's Aviation Applied Technology Directorate in December 2006, marking the formal start of efforts to develop a next-generation turboshaft engine with improved capabilities. This precursor program focused on demonstrating affordable technologies for a 3,000-shaft-horsepower-class engine, laying the groundwork for ITEP as a full-scale acquisition effort.^[12]^[13] The primary drivers for ITEP stemmed from post-9/11 operational challenges in Iraq and Afghanistan, where U.S. Army helicopters like the UH-60 Black Hawk and AH-64 Apache struggled with insufficient power-to-weight ratios, reduced fuel efficiency, and limited adaptability at high altitudes and temperatures. Army officials highlighted these shortfalls as early as 2004, noting that Black Hawks could not fully execute missions in such conditions, prompting a strategic push for engines that enhanced range, payload, and overall mission endurance without requiring major airframe redesigns. Officially designated as ITEP in 2006, the program fell under the oversight of the U.S. Army Aviation and Missile Command to ensure alignment with aviation modernization priorities.^[14]^[15]^[16] Initial funding for ITEP emerged in the early 2010s, with congressional support accelerating integration into the Army's Future Vertical Lift (FVL) initiatives to upgrade existing fleets and enable future platforms. By fiscal year 2012, budget requests included allocations for ITEP development, and by 2015, lawmakers approved $51.2 million in program element funding to advance technology maturation and risk reduction. This backing emphasized ITEP's role in sustaining rotary-wing superiority amid evolving threats.^[17]^[16]

Relation to Legacy Engines

The General Electric T700/CT7 engine family, introduced in the late 1970s, represents a cornerstone of U.S. Army aviation propulsion, powering key rotary-wing platforms including the Sikorsky UH-60 Black Hawk and Boeing AH-64 Apache helicopters.^[18] Developed to address maintenance challenges from Vietnam-era operations, the T700 features a modular design for enhanced reliability in harsh environments, with over 25,000 units produced and more than 100 million flight hours accumulated across military and commercial variants.^[18] The CT7 turboprop derivative extends this lineage to civilian applications, but the military T700 turboshaft variants, such as the T700-701D, deliver rated power in the 1,800–2,000 shaft horsepower (shp) range, specifically achieving 1,902 shp at intermediate power settings.^[19] Despite its proven durability, the T700 exhibits key limitations that constrain its suitability for evolving mission demands, including restricted performance in hot-and-high conditions and a specific fuel consumption (SFC) of approximately 0.462 lb/shp-hr at maximum continuous power.^[19] These shortcomings stem from the engine's foundational design, which, while advanced for its era, struggles with the increased aircraft weights and operational altitudes of upgraded platforms, limiting hover out-of-ground-effect (HOGE) capabilities and overall efficiency.^[1] Furthermore, the T700's growth potential is inherently capped, with architectural constraints allowing only marginal power enhancements beyond current ratings, insufficient to support the 50% increase needed for next-generation systems.^[1] The Improved Turbine Engine Program (ITEP) addresses these gaps by serving as a direct evolutionary successor to the T700, offering a common upgrade path with drop-in compatibility for existing Black Hawk and Apache engine bays to minimize logistical impacts.^[20] Specifically, ITEP enables a 50% power uplift to the 3,000 shp class, enhancing performance for Future Vertical Lift (FVL) platforms such as the Future Long-Range Assault Aircraft (FLRAA) and Future Attack Reconnaissance Aircraft (FARA), while also improving fuel efficiency by at least 25% over the T700-701D baseline.^[1] This positions ITEP as a foundational element in the U.S. Army's broader aviation modernization efforts to sustain operational superiority in contested environments.^[20] Prior to ITEP, interim upgrades to the T700 lineage, such as the T700-701K variant, provided targeted enhancements like improved hot-section components for better hot-and-high power margins, delivering up to 1,915 shp in contingency ratings compared to the 701D's class.^[21] These modifications, including a rear-drive configuration for specific applications, offered roughly 10% better performance in demanding altitudes while maintaining the family's ruggedness and maintainability.^[21] However, such evolutionary steps underscored the T700's architectural limits, reinforcing the necessity for a comprehensive replacement to achieve the transformative capabilities required for future Army aviation.^[1]

Development History

Initial Phases and Competition

The Improved Turbine Engine Program (ITEP) originated from the Advanced Affordable Turbine Engine (AATE) program, which began in December 2006 when the U.S. Army Aviation Applied Technology Directorate solicited proposals for a next-generation 3,000-shaft-horsepower-class turboshaft engine demonstrator.^[1] This phase, spanning 2006 to 2010, emphasized preliminary design reviews, risk reduction, and technology maturation through engine ground testing and validation. In November 2007, General Electric (GE) received a multi-million-dollar contract to advance its demonstrator design, focusing on improved power density and efficiency.^[13] Similarly, in May 2008, the Advanced Turbine Engine Company (ATEC)—a joint venture between Honeywell and Pratt & Whitney—was awarded a $108 million contract to develop and test the HPW3000 demonstrator engine, completing core module validation and full demonstrator runs by 2010.^[22] In 2010, the AATE program transitioned to ITEP under a Technology Transition Agreement, shifting focus to competitive development for integration into legacy platforms like those powered by the T700 engine.^[1] This marked the program's evolution into a formal acquisition effort, building on AATE technologies to meet Army aviation modernization needs. The competitive phase intensified in 2011 with the U.S. Army's issuance of a Request for Proposals (RFP) to mature designs toward full-scale engineering and manufacturing development.^[23] By August 2016, both competing teams—GE with its GE3000 (later T901) and ATEC/Honeywell with the HPW3000 (later T900)—were awarded parallel 24-month, $100 million-plus Technology Maturation and Risk Reduction (TMRR) contracts to refine their engines through preliminary design reviews (PDR).^[24] These milestones included subsystem testing and risk assessments, with GE completing its PDR in early 2018 and ATEC achieving similar progress, paving the way for critical design reviews by 2020.^[25] Funding for the ITEP demonstrator efforts saw significant congressional support, with fiscal year (FY) 2016 appropriations of $50.7 million, FY 2017 at $112.9 million, FY 2018 at $166.6 million, FY 2019 at $165.9 million, and FY 2020 at $197.9 million in research, development, test, and evaluation funds, totaling over $694 million during this period to support the competitive maturation.^[1]

Selection Process

The selection process for the Improved Turbine Engine Program (ITEP) culminated in a competitive downselect following technology maturation and risk reduction efforts by the two contenders: General Electric's T901 and the Advanced Turbine Engine Company (ATEC, a Honeywell-Pratt & Whitney joint venture) T900. During 2018 and 2019, the U.S. Army conducted preliminary design reviews and assessments of prototype designs, evaluating manufacturability, integration feasibility, and overall program risks to inform the transition to engineering and manufacturing development (EMD).^[25]^[26] On February 1, 2019, the Army awarded GE a $517 million EMD contract for the T901, selecting it over the T900 after a comprehensive evaluation.^[27] The primary criteria, weighted with non-cost factors (such as engine design and development) deemed significantly more important than cost/price, included technical performance in areas like platform integration and systems engineering, lifecycle costs, upfront pricing, and small business participation. GE's proposal excelled in lifecycle cost projections, offering approximately 30% lower costs than ATEC's over the program's duration, while demonstrating strong technical merits through extensive testing data from three full-engine demonstrations accumulated over 12 years of development. Although ATEC received low risk ratings in component design and systems evaluation, GE's moderate risk assessment in design and performance was offset by its potential to shorten the EMD phase by about one year, reducing overall program delays and expenses.^[26] ATEC filed a protest with the Government Accountability Office (GAO) challenging the award, alleging biases in risk evaluation and cost assessments, but the GAO denied the protest in June 2019, affirming the Army's decision based on GE's superior balance of performance, cost efficiency, and maturation evidence. ATEC's T900 design was not advanced into EMD but remains a reference for potential future competitions or derivative applications within Army aviation programs. The selection enabled an accelerated integration pathway for the UH-60M Black Hawk upgrade, supporting enhanced power and efficiency without major platform redesigns.^[28]^[29]

Design and Performance

Core Technical Goals

The Improved Turbine Engine Program (ITEP) aims to develop a next-generation turboshaft engine in the 3,000 shaft horsepower (shp) class, representing a 50% increase in power output compared to the T700-701D variant's approximately 2,000 shp rating.^[30]^[31] This enhanced power is intended to address the T700's baseline shortcomings in delivering sufficient performance for modern helicopter missions, particularly under demanding conditions.^[32] A key objective is a 25% improvement in specific fuel consumption (SFC; objective ≥25%, threshold ≥13%), targeting reduced fuel usage to extend range and endurance while lowering operational demands.^[33]^[34]^[35] This efficiency gain supports broader goals of enhanced hot/high operational envelope, enabling reliable performance in extreme environments such as altitudes up to 6,000 feet at 95°F (objective).^[33] Additionally, the program seeks a significant reduction in lifecycle costs, including up to 35% in maintenance costs (estimated total operations and support at $10.8 billion as of 2023), through modular design and maintenance efficiencies.^[36]^[35] Reliability targets include 98% operational availability (Ao; objective) and overall improved durability to exceed current standards, contributing to lower maintenance burdens. The design also emphasizes environmental benefits, such as reduced emissions via optimized combustion and fuel efficiency, alongside scalability for Future Vertical Lift (FVL) platforms to ensure adaptability across Army aviation fleets.^[37]^[38]^[35]

Key Innovations and Improvements

The Improved Turbine Engine Program (ITEP) leverages advanced materials, particularly ceramic matrix composites (CMCs), in turbine blades to enable operation at elevated temperatures while minimizing cooling requirements. These composites, integrated into the hot section of the engine, enhance thermal efficiency by allowing higher turbine inlet temperatures without excessive cooling air diversion, thereby supporting increased power output. For instance, CMCs contribute to a design capable of delivering approximately 50% more shaft horsepower compared to legacy engines like the T700, while also reducing overall engine weight.^[25]^[39]^[40] A key aspect of the program's design is its modular architecture, featuring a common core with single-spool configuration that promotes scalability for integration across various helicopter platforms, such as the UH-60 Black Hawk and AH-64 Apache. This approach includes quick-swap interfaces that facilitate rapid maintenance and repairs in field conditions, improving operational readiness and reducing downtime. The modularity also aligns with broader Army initiatives for open systems architecture, enabling future upgrades without full engine redesigns.^[41]^[42] Digital engineering practices, including model-based systems engineering (MBSE), play a central role in ITEP's development by supporting virtual prototyping and simulation of engine performance. These methods allow for iterative design refinement through integrated data models and architectural concepts, streamlining integration with avionics and reducing risks in physical testing phases. MBSE facilitates a more efficient workflow from concept to qualification, contributing to the program's objective of enhanced specific fuel consumption by up to 20%.^[43]^[44] To boost efficiency, ITEP incorporates additive manufacturing for components like fuel nozzles, which optimize airflow distribution and promote combustion stability through precise, complex geometries that were challenging with traditional methods. These 3D-printed parts enable better fuel atomization and mixing, leading to more uniform burning and lower emissions. Additionally, the extensive use of additive manufacturing across engine elements reduces part counts—such as consolidating over 50 subcomponents into a single piece in some assemblies—lowering production and lifecycle costs while maintaining durability.^[45]^[46]

Engine Variants

Honeywell/AETC HPW3000 (T900)

The Honeywell/AETC HPW3000, also designated as the T900, was developed by the Advanced Turbine Engine Company (ATEC), a 50/50 joint venture between Honeywell Aerospace and Pratt & Whitney established in 2006 to advance turboshaft technologies for military applications.^[47] This consortium leveraged Honeywell's expertise in high-performance gas turbines to propose a solution for the U.S. Army's Improved Turbine Engine Program (ITEP), focusing on engines compatible with the AH-64 Apache and UH-60 Black Hawk helicopters.^[24] The HPW3000 featured a 3,000 shaft horsepower (shp) twin-spool (dual-spool) configuration, which provided enhanced dependability and operational flexibility compared to single-spool designs by allowing independent operation of low- and high-pressure spools for better response to varying flight conditions.^[47] This architecture incorporated advanced gas turbine technologies aimed at extreme durability, including optimized compressor and turbine stages to withstand harsh environments, contributing to projected improvements in engine life and reduced maintenance needs.^[48] The design emphasized high-altitude performance and hot-day operations, making it suitable for Apache upgrades in demanding terrains.^[49] Performance projections for the HPW3000 aligned with ITEP goals, including a 50% increase in power over legacy T700 engines (from approximately 2,000 shp) and a 25% improvement in specific fuel consumption (SFC) to enable extended range, higher payloads, and greater endurance without increasing fuel logistics demands.^[33] The engine targeted a dry weight under 465 pounds with inlet particle separators, maintaining a compact footprint similar to existing installations while enhancing power-to-weight ratios beyond 6.5 shp/lb.^[33] These attributes were demonstrated in early ground tests, where the prototype showed reliable operation and fuel efficiency gains during durability evaluations.^[49] Development of the HPW3000 advanced through technology maturation, with the first full demonstrator completing performance and durability testing by 2013, followed by a second unit in 2014 that validated core enhancements under simulated mission profiles.^[50] ATEC secured a preliminary design contract in 2016 worth up to $48 million to refine the engine for ITEP integration, but the U.S. Army selected GE Aviation's competing T901 in 2019 after downselect, citing overall program affordability and risk factors.^[24]^[51]

GE Aerospace GE3000 (T901)

The GE Aerospace GE3000, redesignated as the T901 following its selection in February 2019 as the winner of the U.S. Army's Improved Turbine Engine Program (ITEP), represents a next-generation turboshaft engine designed to enhance power and efficiency for rotary-wing platforms.^[52]^[53] Developed as a direct successor to the T700 family, the T901 builds on GE's prior demonstrator efforts to deliver scalable performance while ensuring compatibility with existing aircraft envelopes.^[9]^[54] At its core, the T901 provides 3,000 shaft horsepower (shp), achieving a 50% power increase over the T700's baseline rating without altering the engine's external dimensions or significantly increasing dry weight, thereby enabling straightforward integration into platforms like the UH-60 Black Hawk and AH-64 Apache.^[55]^[56] This design maintains a dry weight in the 300-400 lb range, consistent with legacy engines, while incorporating a single-spool architecture that reduces part count by up to 20% compared to more complex configurations.^[57]^[58] The engine's modular construction facilitates maintenance, with provisions for advanced diagnostics and potential hybrid-electric system interfaces to support future vertical lift architectures.^[57] Key advancements in the T901 focus on efficiency and durability, including the application of additive manufacturing for critical components, which optimizes airflow and reduces weight while meeting the program's goal of 25% improved specific fuel consumption.^[45]^[55] Advanced materials, such as third-generation powder metallurgy superalloys for compressor and turbine disks, enable operation at higher temperatures, contributing to a 50% increase in power density relative to the T700.^[59] Cooled turbine vanes with ceramic matrix composites and erosion-resistant coatings further enhance reliability in austere environments, extending on-wing life by approximately 20%.^[57]^[60] The T901 integrates an advanced full authority digital engine control (FADEC) system for real-time performance optimization, allowing seamless adaptation to varying mission demands through variable power modes that balance thrust and fuel efficiency.^[61] Approximately 65% of its components draw from GE's commercial engine portfolio, promoting supply chain efficiency and cost reductions in production and sustainment.^[57] Original program timelines targeted low-rate initial production (LRIP) in 2026, with full integration into the UH-60M Black Hawk by 2028 to re-engine over 2,000 aircraft; however, as of late 2025, funding uncertainties have placed these milestones at risk, though ground and flight testing continue to validate the baseline design.^[62]^[7]^[63]

Testing and Integration

Ground and Flight Trials

The T901 engine's ground testing commenced with the initiation of full-scale development testing in March 2022 at GE Aerospace facilities, culminating in the successful completion of the first engine to test milestone in July 2022. This phase included validation of core performance metrics, with the engine accumulating hours toward a comprehensive qualification program exceeding 5,000 total test hours. Specific fuel consumption (SFC) targets the program's objective of 0.352 lb/SHP-hr at cruise conditions (1,450 SHP, 6,000 ft, 95°F), representing a targeted 25% improvement over the legacy T700 engine. By mid-2024, endurance testing had demonstrated reliability beyond 1,000 hours, supporting projections for extended operational life.^[64]^[65]^[1]^[36] The first production-representative T901 engines were delivered to Sikorsky in late June 2024 for integration into a UH-60M Black Hawk demonstrator, marking a key step toward flight qualification. Initial ground runs followed in January 2025 at Sikorsky's West Palm Beach, Florida facility, where the engines powered the aircraft through a series of static and dynamic tests to verify installation compatibility and baseline performance. These runs confirmed peak output at 3,000 shaft horsepower (shp), delivering the anticipated 50% power margin over the T700 while maintaining the same physical envelope. Simulated mission profiles during ground testing highlighted 25% fuel savings, aligning with design goals for enhanced efficiency in tactical operations.^[66]^[67]^[56] Flight testing progressed with the first hover in May 2025, followed by untethered operations and forward flight by October 2025, where the equipped UH-60M reached altitudes of nearly 6,000 feet at speeds upwards of 160 knots. These milestones validated the engine's ability to provide surplus power for hot-and-high environments, with no anomalies reported in thrust response or thermal management. Durability trials, incorporating environmental stressors per MIL-STD-810 standards, including salt fog exposure and simulated bird ingestion, affirmed mean time between failures (MTBF) projections through rigorous component-level and full-engine evaluations. Overall, these trials empirically confirmed that the T901 meets its core technical goals for power density and sustainability. As of late October 2025, testing has been described as "very successful," with no anomalies reported, though the program's continuation depends on future funding decisions.^[9]^[63]^[10]

Platform Compatibility

The T901 engine is designed as a bolt-on replacement for the existing T700 engines in the UH-60M Black Hawk, fitting within the current engine compartment footprint and requiring minimal modifications to the airframe. This compatibility enables straightforward integration without major structural changes, facilitating upgrades across the existing fleet. The first instrumented installation occurred in early 2025, with ground runs commencing in January at Sikorsky's facilities, marking the initial phase of airframe-engine synergy testing.^[5]^[67] For the AH-64E Apache, the T901 provides a significant power boost, delivering 50% more horsepower than the T700 to enhance hover performance and dash speeds in hot-and-high conditions. However, full utilization of the engine's 3,000 shaft horsepower rating necessitates upgrades to the main transmission drives, fuselage, and supporting components to handle the increased torque and thermal loads. These modifications, developed in collaboration with Boeing, ensure the Apache's drivetrain can accommodate the higher output while maintaining structural integrity.^[55]^[68] The T901's modular design supports scalability for Future Vertical Lift (FVL) platforms, including the Future Long-Range Assault Aircraft (FLRAA) from Sikorsky and Boeing, as well as the originally planned Future Attack Reconnaissance Aircraft (FARA) from Bell, despite the FARA program's cancellation in 2024. Its architecture allows for growth potential beyond the baseline 3,000 shp through incremental module improvements, enabling adaptation to varying mission requirements in next-generation rotorcraft. This flexibility positions the engine as a common powerplant across legacy and future Army aviation assets.^[69]^[52] Integration challenges for the T901 include adaptations for vibration isolation and enhanced cooling systems to manage the higher operating temperatures and power density compared to the T700. These issues have been addressed through joint engineering efforts between the U.S. Army and Sikorsky, incorporating advanced materials like ceramic matrix composites (CMCs) in the engine to improve thermal efficiency and reduce vibration transmission to the airframe. Such resolutions ensure reliable performance during prolonged operations.^[70]^[5] The T901 upgrade holds substantial fleet-wide implications, with potential retrofits targeted at the U.S. Army's approximately 2,100 UH-60 Black Hawk helicopters, enhancing overall lift, range, and fuel efficiency. By modernizing these platforms, the program extends their operational service life into the 2050s and beyond, aligning with Army plans to sustain the Black Hawk as a core utility asset through mid-century. This retrofit approach maximizes return on existing investments while bridging to FVL capabilities.^[71]^[72]

Current Status and Challenges

Recent Milestones

In July 2024, GE Aerospace delivered the first two T901-GE-900 flight test engines to the U.S. Army for integration into the Sikorsky UH-60M Black Hawk helicopter under the Improved Turbine Engine Program (ITEP).^[5] These engines, selected in 2019 following a competitive downselect, represent a key step toward enhancing helicopter performance with 50% more power than the legacy T700.^[55] Sikorsky initiated ground testing preparations for fiscal year 2025 in late January 2025, conducting initial light-off and ground runs of the T901 engines on a UH-60M Black Hawk at its West Palm Beach, Florida facility.^[67]^[73] These tests verified the engine's start-to-fly progression, including idle and fly modes, demonstrating reliable operation and integration compatibility.^[56] A major flight demonstration milestone occurred in May 2025 with the first successful hover test of a Black Hawk equipped with T901 engines, conducted jointly by the U.S. Army, Sikorsky, and GE Aerospace.^[9] By October 2025, testing had advanced to include forward flight, achieving altitudes of nearly 6,000 feet at full power and speeds exceeding 160 knots, confirming the engine's enhanced lift and efficiency in operational scenarios.^[10] The FY2025 budget approved $130 million for ITEP engineering and manufacturing development, comprising the Army's $67 million request augmented by a $63 million congressional add to sustain testing and integration despite broader fiscal constraints.^[74] GE Aerospace and Sikorsky have deepened their collaboration through integrated testing efforts, incorporating digital twin modeling to optimize production scaling and sustainment for the T901 engine.^[75] This partnership supports accelerated validation of manufacturing processes for future fleet upgrades. Certification progress targets military Milestone C approval in the 2028-2029 timeframe, with full type certification anticipated around 2027 to enable initial fielding on Black Hawk and Apache platforms.^[76]^[77]

Program Uncertainties

In May 2025, the U.S. Army announced a proposal to cancel the Improved Turbine Engine Program (ITEP) as part of the Army Transformation Initiative (ATI), aiming to reallocate approximately $1.5 billion in prior and projected funding toward emerging priorities such as unmanned systems, artificial intelligence, and drone technologies.^[63]^[10] The decision stemmed from budgetary constraints and a strategic shift to accelerate modernization in other aviation domains, though the program had already incurred significant expenditures over two decades without full operational deployment.^[63] Despite the proposed cuts, the Army has continued ground and flight testing of the GE Aerospace T901 engine, particularly on UH-60 Black Hawk helicopters, utilizing existing funds from prior appropriations. In October 2025, Brig. Gen. David Phillips described the demonstrations as "very successful," noting reliable performance in flights reaching nearly 6,000 feet and speeds exceeding 160 knots, which underscores the engine's potential despite fiscal uncertainties.^[10] This persistence reflects an effort to gather data for potential future decisions, even as the program's broader integration faces delays.^[63] As an alternative, Boeing proposed in September 2025 an upgraded AH-64F Apache variant during the MSPO trade show, emphasizing weight reductions via composite materials and interim enhancements to the existing T700 engine rather than full ITEP adoption, to extend the platform's service life into the 2060s without the higher costs of a new powerplant.^[78] This pitch, developed through joint Army sessions, positions the F-model as a cost-effective bridge amid ITEP's risks.^[78] GE Aerospace has engaged in ongoing discussions with Army leaders since June 2025 to explore accelerated fielding options for the T901, potentially streamlining integration to mitigate cancellation impacts.^[79] Congressional stakeholders have pushed back through appropriations measures, with Senate appropriators restoring $175 million in funding for ITEP in the FY2026 defense bill, criticizing the Army's cuts as premature given the engine's demonstrated benefits in power and efficiency.^[11]^[10] On November 9, 2025, Congress enacted a continuing resolution providing appropriations through January 30, 2026, at FY2025 levels, thereby maintaining ITEP funding and supporting ongoing testing and development activities pending enactment of the full FY2026 budget.^[80]^[81] Looking ahead, potential outcomes include truncating ITEP to Black Hawk applications only, prioritizing that platform's upgrades while deferring Apache integration, or pivoting toward commercial engine derivatives to reduce development risks and costs.^[63]^[10] The program's fate hinges on FY2026 budget resolutions and NDAA negotiations, balancing technical successes against fiscal and strategic trade-offs.^[11]

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None
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ITEP is the U.S. Army's Improved Turbine Engine. Program, created to develop a new engine to replace the GE T700 series engines on all Army.
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- [H.A.S.C. No. 112-15]ARMY MODERNIZATION PROGRAMS
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On March 22 the Army's Improved Turbine Engine Program achieved a significant program milestone with the “light off” — the first ...
[28]
POWERING AHEAD - Key Military
Oct 4, 2018 · The Improved Turbine Engine Program (ITEP) is developing a ... (AATE). It began in 2006 and concluded in 2014 with the completion of ...
[29]
ITEP Engine for UH-60 and AH-64 Passed the First Tests - TURDEF
Jul 9, 2022 · Specifically, the ITEP program has set a goal of reducing fuel consumption by 25% (to 0.347 pounds per horsepower per flight hour), increasing ...
[30]
ITEP: Powering Today's Army Helicopters Into The Future - Forbes
Jun 28, 2024 · The Army's well-crafted Advanced Affordable Turbine Engine (AATE) program competitively developed leap-ahead technologies. ... By June 27, the ...
[31]
Next-gen engine for current and future helicopter fleets begins testing
Mar 24, 2022 · The engine for the US Army's Improved Turbine Engine Program has begun initial testing, the service and the engine's developer announced March 23.Missing: downselect June
[32]
Improved Turbine Engine's First Engine to Test Lights Off - DVIDS
Mar 23, 2022 · The ITE T901 combines additive manufacturing, ceramic matrix composite parts and traditionally produced parts to generate 50 percent more power ...Missing: core SFC
[33]
Black Hawk program receives improved turbine engine with CMC
Aug 5, 2024 · Black Hawk program receives improved turbine engine with CMC. GE Aerospace T901 flight test engines will replace GE T700 for the UH-60M Black ...<|control11|><|separator|>
[34]
Why ITEP? The T901 Improved Turbine Engine is critical to MDO.
May 3, 2023 · The T901 is an entirely new engine design that will enable the platforms to regain lost capability by providing 50% more shaft horsepower at sea ...Missing: downselect date selection
[35]
Get the Facts: Why Single-Spool is Superior for ITEP - GE Aerospace
GE is offering our new T901 turboshaft helicopter engine, which incorporates fully modular architecture and a single-spool core design. All of these are ...Missing: common | Show results with:common
[36]
GE wins $517m ITEP contract for US Army helicopters - FlightGlobal
Feb 1, 2019 · “The full modularity of the T901's single-spool core provides the Army with superior fix-forward maintainability,” said the company. “Combat ...
[37]
Improved Turbine Engine Digital Engineering Perspective - YouTube
Mar 24, 2022 · ... US Army by leveraging the digital engineering infrastructure for model-based systems engineering (MBSE). Learn more at www.vtol.org/digital ...Missing: Program | Show results with:Program
[38]
Modeling and Simulation - TES-i - Engineering a Safer Tomorrow
U.S. Army Improved Turbine Engine Program. TES developed data models, architectural concepts, and components for use in developing a common avionics-to-engine ...
[39]
Additive Manufacturing and the U.S. Army's Improved Turbine Engine
Jul 16, 2021 · The Improved Turbine Engine Program (ITEP), managed by the US Army's Aviation Turbine Engines Project Office (ATE PO), selected General ...
[40]
GE's T901 engine ready for U.S. Army's Improved Turbine Engine ...
Oct 9, 2018 · One of the additive parts in the XT901 reduces an assembly of more than 50 subcomponents into one part. GE is an industry leader in the additive ...
[41]
U.S. Army Selects ATEC To Design Dramatically Improved ...
Aug 23, 2016 · ATEC recently completed testing of two HPW3000 demonstrator engines, which performed very well and have already validated various program ...Missing: 2017 | Show results with:2017
[42]
[PDF] SUPERIORITY THROUGH PERFORMANCE: HPW3000
What is ITEP? ITEP (Improved Turbine Engine Program) is the U.S. Army's initiative to develop a 50 percent more powerful and 25 percent more fuel-efficient ...<|control11|><|separator|>
[43]
ATEC completes first HPW3000 engine's durability testing
Oct 22, 2013 · During testing, the HPW3000 engine demonstrated an enhanced fuel efficiency which will enable extended range and increased payload capabilities ...Missing: T900 consortium design
[44]
The Advanced Turbine Engine Company (ATEC) successfully ...
Oct 13, 2014 · The HPW3000 engine offers dramatic improvements in performance, energy-efficiency and protection for soldiers over the current engine – and ...Missing: T900 SFC
[45]
GE Aviation wins US Army ITEP future aero-engine competition
Feb 4, 2019 · GE Aviation offered its developmental T901-GE-900 powerplant to re-engine the US Army's current fleet of Sikorsky UH-60 Black Hawk and Boeing AH ...Missing: details consortium performance
[46]
U.S. Army selects GE's T901 engine for Improved Turbine Engine ...
The US Army has selected GE Aviation's T901-GE-900 engine for the Engineering and Manufacturing Development (EMD) phase of the Improved Turbine Engine Program ...Missing: origins | Show results with:origins
[47]
The history of GE's T901 engine | GE Aerospace News
The newly designed T901 (formerly GE3000) will deliver more power, fuel efficiency, and durability for the Army's Improved Turbine Engine Program (ITEP).
[48]
US Army completes first flight with GE Aerospace T901 turboshaft
May 16, 2025 · ... GE Aerospace YT706, which offers 30% more power than the standard T700 turboshaft, according to GE. The T901 would increase performance ...
[49]
GE Achieves Testing Milestones for U.S. Army FATE and ITEP ...
Oct 11, 2017 · Prototype powerplants for the Future Affordable Turbine Engine and Improved Turbine Engine Program have been run.Missing: support | Show results with:support
[50]
T901 Engine | GE Aerospace
The T901 engine, selected for Apache and Black Hawk, provides 50% more power, 25% better fuel consumption, and uses CMCs for more power with less weight.
[51]
Newest helicopter engine powers UH-60M ground runs - Army.mil
Feb 4, 2025 · Redstone Arsenal, Alabama: The United States Army's Improved Turbine Engine Program (ITEP) team reached a major milestone in their mission ...
[52]
[PDF] The Single-Spool Core - GE Aerospace
The Improved Turbine Engine Program. (ITEP) is a US Army program that calls on industry to produce a new turboshaft engine that will provide 50% more power,.<|control11|><|separator|>
[53]
GE Aviation delivers improved turbine engine during U.S. Army ...
May 10, 2018 · “The T901 is lighter, less complex and more maintainable for the warfighter, which leads to improved readiness and reduced life-cycle costs,” ...
[54]
[PDF] Durability Challenges for Next Generation of Gas Turbine Engine ...
With recent introduction of third generation of powder metallurgy nickel-base disk alloys, the disk temperature in advanced commercial engines today is on ...Missing: GE T901 power
[55]
GE, US Army conduct PDR for T901 improved turbine engine
May 7, 2018 · The PDR is a major milestone within the Technology Maturation and Risk Reduction (TMRR) contract, a $102 million, 24-month contract the Army ...Missing: $250 2010
[56]
GE and the U.S. Army conduct T901 Preliminary Design Review
The T901 is GE Aviation's engine for the Improved Turbine Engine Program (ITEP), an undertaking to re-engine the US Army's Boeing AH-64 Apaches and Sikorsky UH ...
[57]
Sikorsky Plans For Major Black Hawk Order In Late 2026
Oct 3, 2025 · Sikorsky and GE Aerospace tested the T901 engine on a UH-60M in February 2025. Sikorsky expects the award for the 11 th, and likely final, UH- ...Missing: LRIP 2028
[58]
New Army helo engine still powering on despite uncertain future
Oct 13, 2025 · The U.S. Army has not yet terminated the Improved Turbine Engine Program ... Recap: Highlights from the US Army's 2025 conference in Washington.
[59]
GE begins testing on first T901 turboshaft engine for U.S. Army
Mar 23, 2022 · Compared to its predecessor, the GE T700, the T901's 50% power increase restores aircraft performance, while its 25% better specific fuel ...Missing: NASA Glenn altitude chamber endurance
[60]
Army Successfully Concludes T901 First Engine to Test Milestone
Jul 7, 2022 · The T901 is the Army's new 3,000 shaft horsepower center line engine ... T901 will undergo nearly 5,000 hours of testing to achieve full engine ...Missing: NASA Glenn Research altitude chamber 2019-2022 SFC endurance
[61]
GE Aerospace T901 Engines Accepted by U.S. Army for UH-60 ...
Jun 27, 2024 · “The T901 engine will ensure warfighters will have the performance, power, and reliability necessary to maintain a significant advantage on the ...<|separator|>
[62]
Sikorsky Begins Black Hawk® Ground Runs with U.S. Army T901 ...
Jan 29, 2025 · The T901 engine will increase the Black Hawk's power by 50%, while also improving fuel efficiency and is a critical component of the roadmap to ...Missing: production plans 2026 LRIP 2028
[63]
Official: T901 Engine Testing On Black Hawk 'Very Successful ...
Oct 30, 2025 · GE Aerospace was awarded a $517 million contract in February 2019 to develop the T901 engine for ITEP, with an aim for it to eventually ...
[64]
Deep Dive - Modernized Apache Capabilities - Boeing
Oct 5, 2023 · Modifications to the main transmission drives, fuselage, and supporting components will allow the T901 engine to operate at full power. Updates ...
[65]
US Army powers helicopters with T901 engines
Oct 17, 2023 · General Electric Aerospace's T901 engine will power the Army's UH-60 Black Hawk, AH-64 Apache and Future Attack Reconnaissance Aircraft fleets.
[66]
GE Aviation's T901 Selected by U.S. Army to Continue Powering ...
GE also uses ceramic matrix composite (CMC) components in the T901, which are lighter and more durable than metal parts and can withstand higher temperatures.
[67]
Availability and Use of Aircraft in the Army
Sep 5, 2024 · In 2023, the Army had about 3,900 manned aircraft, mostly helicopters: 2,100 H-60 Black Hawk medium-transport helicopters, 700 AH-64 Apache ...
[68]
First of new Black Hawks are already operational | The Australian
Mar 25, 2025 · The US Army plans to fly Black Hawks until 2070 and we can expect to see the aircraft in Australian colours until at least the 2050s. Lockheed ...
[69]
Sikorsky begins ground testing with new Black Hawk engine | News
Jan 29, 2025 · “The test demonstrated the T901's start-to-fly progression, including idle and fly modes, with the rotor brake disengaged, marking a significant ...
[70]
GE Aerospace in talks with Army leaders on how ITEP could speed ...
Jun 3, 2025 · The Improved Turbine Engine Program is designed to replace the T700 engine -- which flies on Black Hawk and Apache helicopters -- with the T901 ...
[71]
Sikorsky begins Black Hawk ground runs with T901 Improved ...
Jan 31, 2025 · Meanwhile, digital innovations, such as a new sustainment digital twin, will improve the aircraft's safety and mission readiness while reducing ...Missing: MOU production scaling
[72]
Milestone C for Army's T901 engines now expected in 2028-2029 ...
Oct 17, 2024 · The T901s, which will ultimately be used to power the Black Hawk and Apache helicopters, provide 50% more power and 25% better fuel consumption, ...
[73]
Sikorsky Eyes Next Multi-Year Black Hawk Deal In December 2026 ...
Oct 16, 2025 · Benton also confirmed Sikorsky has now been flying “for several months” with the new T901 engine, developed under the Army's Improved Turbine ...
[74]
Boeing floats next-generation F-model Apache as ITEP fall back
In the wake of the US Army disclosing a plan to cancel the Improved Turbine Engine Program (ITEP), Boeing will focus on the design ...
[75]
GE Aerospace in talks with Army leaders on how ITEP could speed ...
Jun 3, 2025 · ... engine, which affords 50% more power and 25% better specific fuel consumption. But with recent program purges from service leaders, ITEP's ...Missing: target | Show results with:target
[76]
Senate Appropriators Back Army ATI Cuts But Knock 'Disjointed ...
Aug 7, 2025 · Senate appropriators' bill restores $175 million in funding for the ITEP program, after the Army targeted it for a cut, with the senior Senate ...