Business

September 25, 2013

Pratt & Whitney advancing sixth generation military engine technology

Pratt & Whitney and the U.S. Air Force Research Laboratory have begun testing of Pratt & Whitney’s unique, adaptive supersonic fighter engine fan rig based on a full-scale F135 development fan to advance the next generation of military fighter engine technology.

The purpose of the adaptive fan rig test is to mature technologies associated with adaptive bypass flow associated with a third stream of air, which will enable efficiency improvements in long-range persistence and high thrust combat maneuvers as well as in transonic and supersonic flight conditions.

Pratt & Whitney is a United Technologies Corp. company.

Similar to changing gears in a car or on a bicycle, changing an aircraft engine’s bypass ratio allows the engine to be optimized for high thrust takeoffs, while maintaining the efficiency of a commercial airline’s high bypass engine in cruise conditions. Unlike commercial airline engines which are attached to the wing, engines used in modern fighter aircraft must use smaller diameter turbofans and be embedded within the aircraft. Consequently, there is a performance tradeoff between high thrust capabilities and optimum efficiency experienced in cruise conditions. Developing a next generation variable cycle adaptive engine is therefore essential to meeting the evolving needs of the warfighter.

Modern military turbofan engines have two airstreams – one that passes through the core of the engine, and another that bypasses the core. Development of a third stream of airflow will allow for improved fuel efficiency and cooler heat sinks which improve thermal management of the air system and reduced heat signature.

“Developing an effective adaptive fan concept is a critical step in advancing technology that will ensure next generation air dominance for our military,” said Jack Hoying, program manager, Air Force Research Laboratory. “We are working closely with our industry partners to develop game-changing technologies that will truly advance the state of the art for military engines in the 21st Century.”

The adaptive fan variable cycle technology will leverage and improve upon Pratt & Whitney’s baseline experience in building and fielding 5th generation fighter engines – the F119 that powers the F-22 Raptor, and the F135 powering the F-35 Lightning II, according to Bennett Croswell, president, P&W Military Engines.

“Pratt & Whitney has an innovative approach to achieving variable cycle features with a multiple flow path architecture,” said Croswell. “We’re building on our foundation of proven 5th generation capabilities, and we are now mastering adaptive technologies – really expanding the boundaries of state of the art engine technology critical for the next 6th generation aircraft.”

The fan rig test is being conducted in tandem with several other technology initiatives that are advancing the state of military engine technology, including the AFRL-sponsored Adaptive Engine Technology Demonstration (AETD) program, the U.S. Navy Fuel Burn Reduction (FBR) program, and other internal Pratt & Whitney advanced engine concept efforts.

The AETD program has a goal of providing a 25 percent improvement in specific fuel consumption and a 10 percent improvement in thrust levels compared to today’s fifth-generation combat aircraft engines. The FBR demonstration program is focused on delivering a 5+ percent reduction in fuel burn in an F135 demonstration engine.

The adaptive fan rig tests are being conducted at the AFRL Compressor Research Facility in Dayton, Ohio. The jointly-funded program was launched in late 2011, with tests of the adaptive fan concept taking place from August through September 2013. Following testing, the combined Pratt & Whitney and AFRL team will conduct additional processing and engine test analysis.




All of this week's top headlines to your email every Friday.


 
 

 
Courtesy graphic

Lockheed Martin conducts flight tests of aircraft laser turret for DARPA

AFRL photograph The Aero-adaptive Aero-optic Beam Control turret that Lockheed Martin is developing for the Defense Advanced Research Projects Agency and the Air Force Research Laboratory has completed initial flight testing. T...
 
 

Lockheed Martin advances live, virtual, constructive training in flight test

https://www.youtube.com/watch?feature=player_embedded&v=jvXmOW8L3mU Lockheed Martin successfully tested a new solution for integrated live, virtual and constructive training during a flight demonstration at the company’s Aeronautics facility in Fort Worth, Texas. During the flight test, a pilot flying in a live F-16 engaged in a synthetic training exercise with a pilot flying as wing...
 
 

Raytheon begins full rate production on TALON Laser Guided Rockets

Under a $117 million contract awarded to Raytheon, Raytheon Missile Systems has begun production of the TALON Laser Guided Rocket. In 2013, the Armed Forces General Headquarters of the United Arab Emirates awarded Tawazun a contract to procure the TALON Laser Guided Rocket. “Full rate production of the TALON LGR is a significant milestone for...
 

 

Advanced Photonix awarded contract for U.S. Navy missile weapons program

Advanced Photonix, Inc.® announced Sept. 15 that it has received a contract worth approximately $1,600,000 from a leading military contractor, which acts as a prime supplier for the U.S. Navy’s Guided Missile Weapon System. The contract is for a custom photodiode and is expected to be completed within the next 18 months, and payment is...
 
 

U.S. Air Force expands RQ-4 Global Hawk fleet

The U.S. Air Force has awarded Northrop Grumman a $354 million primarily firm-fixed-price contract to expand their RQ-4 Global Hawk unmanned aircraft system fleet by three aircraft. Global Hawk operates multiple sensors simultaneously to gather intelligence, surveillance and reconnaissance data. The new aircraft are Multi-INT models that carry sophisticated imaging and electronic signals sensor...
 
 

U.S. Navy awards General Dynamics $234 million for nuclear-sub support work

The U.S. Navy has awarded a $234 million contract to General Dynamics Electric Boat to provide planning yard work, engineering and technical support for nuclear submarines. The contract has a total potential value of $1.5 billion over five years if all options are exercised. Electric Boat is a wholly owned subsidiary of General Dynamics. Under...
 




0 Comments


Be the first to comment!


Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>