Fluid dynamics

May 2, 2011 - 5:30am

The 7,445-pound-thrust Honeywell HTF7250G turbofan gained FAA certification last month, a company official told AIN. Honeywell Aerospace is now supporting the G250’s flight tests. Next will be the beginning of the actual production phase–the Gulfstream’s HTF7250G test engines were already built according to production processes, Honeywell said.

April 26, 2011 - 11:10am

A bilateral project between NASA and German aerospace research center DLR is expected to focus on the role rotor tip vortices play in helicopter noise by recording vortex velocity fields and rotor-blade deformations by using a test stand with a variety of high-speed cameras, lasers and LEDs that will make the vortices visible. Eventually research will progress to actual helicopters.

October 19, 2010 - 10:40am

Aerion, based in Reno, Nev., is at Booth No. 6202 in NBAA exhibit Hall C to describe preliminary results from the latest round of flight tests of a NASA F-15B on the road to what it envisions as the worlds' first supersonic business jet (SBJ). The tests during July and August in collaboration with NASA's Dryden Flight Research Center achieved a top speed of Mach 2.0.

October 18, 2010 - 3:36am

Aerion, based in Reno, Nev., is at Booth No. 6202 in NBAA exhibit Hall C to describe preliminary results from the latest round of flight tests of a NASA F-15B on the road to what it envisions as the worlds’ first supersonic business jet (SBJ).

October 13, 2010 - 6:57am

Business jet engine programs this year seem to be moving slowly, with little progress to report. Some–like the Snecma Silvercrest–have not been officially launched yet and are still looking for an application. Most news comes from derivative engine programs at Honeywell, Pratt & Whitney Canada and Williams International.

August 27, 2010 - 6:07am

Business jet manufacturers are quietly progressing toward more-electric architectures, where electricity replaces hydraulic and pneumatic power in systems such as brakes, landing gear or even control-surface actuation. This avoids the use of environmentally unfriendly hydraulic fluids and ultimately should help reduce fuel burn.

August 27, 2010 - 4:50am

Turbofan manufacturers are developing cleaner, quieter and more environmentally friendly engines that will meet current and future regulatory requirements. That fact should come as no surprise, since they have been doing this all along as the natural byproduct of efforts to build more fuel-efficient and quieter turbofans for a market that demands nothing less.

July 20, 2010 - 11:10am

Rolls-Royce is putting all its cards on a new engine to power future single-aisle aircraft and told AIN that as far as it is concerned, “the numbers do not stack up” for re-engining either the Airbus A320 or Boeing 737.

July 17, 2010 - 12:42am

The air transport industry was caught off guard in April when huge plumes of ash from Iceland’s Eyjafjallajökull volcano effectively shut down flying in Europe for a week, stranding thousands of passengers and draining at least $1 billion from air carriers.

July 5, 2010 - 9:18am

Pratt & Whitney’s F135 engine has achieved a first for the Lockheed Martin F-35 program by accelerating the F-35B STOVL version through the sound barrier last month. The test aircraf–BF-2–climbed to 30,000 feet and accelerated to Mach 1.07 at the off-shore test track near NAS Patuxent River in Maryland on June 14. The F-35 has supercruise capability and does not require the use of engine afterburner to achieve supersonic flight.

 
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