Fluid dynamics

February 15, 2012 - 12:45pm

Asiana Airlines has selected Pratt & Whitney’s fleet management program for three of its P&W-powered Boeing 777s, the engine manufacturer announced here at the Singapore Airshow. Eagle Services Asia, Pratt & Whitney Global Service Partners’ engine overhaul facility in Singapore, will be responsible for the six-year agreement, which provides for the maintenance of six PW4090 turbofans that power the aircraft.

January 31, 2012 - 3:05pm

University of Cambridge Professor Holger Babinsky has created a one-minute video to dispel the myth that an airplane wing generates lift because the airflow moving over the upper surface has a longer distance to travel and “needs to go faster to have the same transit time as the air traveling along the lower, flat surface.” What actually causes lift, he said, “is introducing a shape into the airflow, which curves the streamlines and introduces pressure changes–lower pressure on the upper surface and higher pressure on the lower surface.

December 13, 2011 - 1:38pm

The FAA has issued a proposed advisory circular that would, as a core principle, include “emphasis of ‘reduce angle of attack’ response as the primary response for stall events.” According to the proposed AC, “The primary goal of this proposed advisory circular is to provide training, testing and checking recommendat

November 15, 2011 - 11:13am
HyperMach said it is increasing the top speed of its planned supersonic business

HyperMach Aerospace’s planned 20-seat supersonic business jet (SSBJ), dubbed the SonicStar, will be able to fly at Mach 4.0, the company said Friday in Dubai. This is faster than the Mach 3.6 top speed announced when the proposed V-tailed aircraft was first revealed in June at the Paris Air Show. At Mach 4, the SonicStar would be able to fly from New York to Dubai in just 2 hours 20 minutes.

November 13, 2011 - 7:17am

The announcement of the new joint venture between Rolls-Royce and Pratt & Whitney on mid-sized engines was hardly a statement of marriage, but the vows made by the two aero-engine giants on 12 October nevertheless secure their long-term future in the huge market for mid-sized aero-engines up to 2030.

November 12, 2011 - 8:37am
HyperMach SonicStar

HyperMach’s planned 20-seat supersonic business jet (SSBJ)–SonicStar–will be able to fly at speeds up to Mach 4.0, the company said on Friday. This is faster than the Mach 3.6 top speed announced when the V-tailed aircraft was first revealed at June’s Paris airshow.

November 4, 2011 - 4:50am
Chinese L-15 jet trainer

China has ordered 250 AI-222-25F turbofans from the Ukraine to power production versions of the Hongdu L-15 advanced jet trainer.

October 10, 2011 - 7:20am
Aerion supersonic business jet

Supersonic business jet developer Aerion Corp. (Booth No. N5707) says it has gained traction among aircraft manufacturers with its new aerodynamics consultancy–Aerion Technologies–since the subsidiary was launched in May at the European Business Aviation Convention and Exhibition (EBACE).

October 10, 2011 - 12:50am
GE Passport turbofan

GE is here with three major programs at various stages of development. The Passport 20, for Bombardier’s Global 7000 and 8000 large-cabin business jets, has already passed some rig tests. The GE Honda HF120, for the HondaJet and the (currently suspended) Spectrum Freedom, is scheduled for certification in 2012. Meanwhile, the HF80 turboprop is due for certification later this year.

June 22, 2011 - 2:56am

On the opening day at the Paris Air Show, HyperMach took the wraps off a 20-seat, Mach 3.6 business jet that would fly from Paris to New York in just under two hours. Key enabling technologies for the SonicStar include the SonicBlue S-MAGJET five-stage electric-turbine hybrid supersonic 4000-X series engine and a magnetic spike on the nose that can control sonic booms using plasma waves.

 
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