Go-Fast Bizjet: G650 Reaches Mach 0.995 In Flutter Testing | Aero-News Network
Aero-News Network
RSS icon RSS feed
podcast icon MP3 podcast
Subscribe Aero-News e-mail Newsletter Subscribe

Airborne Unlimited -- Recent Daily Episodes

Episode Date

Monday

Tuesday

Wednesday

Thursday

Friday

Airborne On ANN

Airborne 11.28.16

Airborne 11.29.16

Airborne 11.30.16

Airborne 12.01.16

Airborne 12.02.16

Airborne Hi-Def On YouTube

Airborne 11.28.16

Airborne 11.29.16

Airborne 11.30.16

Airborne 12.01.16

Airborne 12.02.16

Sat, Aug 28, 2010

Go-Fast Bizjet: G650 Reaches Mach 0.995 In Flutter Testing

Accomplishment Establishes G650 As World's Fastest Civil Aircraft

Gulfstream Aerospace Corp. announced Friday that a Gulfstream G650 recently reached Mach 0.995 as part of its 1,800-hour flight-test program. The aircraft achieved this speed during flutter testing, which evaluates the aircraft's damping responses following an input from an external test device. Flutter testing is performed at a variety of frequencies, speeds, altitudes, weights and centers of gravity.


G650

For the initial series of flutter tests, the aircraft achieved clearance out to both its design dive speed (Vd) and design Mach dive speed (Md) at altitudes ranging from 10,000 feet to up to the aircraft's maximum certified altitude of 51,000 feet.

In order to achieve the maximum speed of Mach 0.995, Gulfstream experimental test pilots Tom Horne and Gary Freeman along with flight test engineer Bill Osborne took Serial Number (S/N) 6001 into a dive, pitching the aircraft's nose 16 to 18 degrees below the horizon. During the dive, flutter exciters introduced a range of vibration frequencies to the wing, tail and flight control surfaces to ensure the aircraft naturally dampened out the oscillations without further action from the pilots. Even under such extreme circumstances, the G650 performed flawlessly.

"The airplane is very predictable," said Horne, senior experimental test pilot, Gulfstream. "It's very easy to control and to get precise control at those speeds. The airplane response has matched the expectations of our engineers, and we've been able to easily fly the test conditions and march through the test plan."


(L-R) Tom Horne, Bill Osborne, Gary Freeman

During the flutter test missions, a team of multi-disciplinary engineers in Gulfstream's telemetry center in Savannah monitored the aircraft's behavior and determined real-time the damping characteristics of the aircraft. The vibration frequencies exerted on the aircraft ranged from 2 hertz, or twice per second, to 58 hertz, or about as fast as a fluorescent light flickers.

"We're doing very well," said Pres Henne, senior vice president of Programs, Engineering and Test, Gulfstream. "The demonstrated flutter margins met or exceeded our expectations out to maximum speeds. That's a good sign."

 

As S/N 6001 continued with flutter testing, S/N 6005 completed initial phase manufacturing and began engine testing. S/N 6005 is the fifth and final aircraft in the G650 flight-test program. Each aircraft in the program has a specific purpose, with S/N 6001 focused on envelope expansion, air data calibration, flutter, in-flight performance and flight controls. S/N 6002 is used to evaluate the aircraft's systems as well as its takeoff and landing performance, while S/N 6003 tests the avionics, in-flight load measurement and ice protection system. S/N 6004 will be the first G650 outfitted and tested with a full interior, which is currently being installed. S/N 6005 will participate in the reduced vertical separation minimum testing.

The G650 flight-test program officially began on Nov. 25, 2009. Through Aug. 25, the four airplanes currently flying in the program have completed more than 170 flights and 575 flight-test hours.

FMI: www.gulfstream.com

Advertisement

More News

Airborne 12.02.16: Stratos 714 1st Flt, TFR Politics, Airbus Job Cuts

Also: Female Skydive Record, ANN November Efforts, Dream Chaser, SecTrans Reax, FAA SAFO, Able Flight, Airline Group Grounded On November 21, the Stratos 714 very light jet took to>[...]

Aero-News: Quote of the Day (12.04.16)

“All three institutions have now sent a strong signal in favour of modernizing the Agency and the European aviation system as a whole. There is clear political will to ensure>[...]

Yingling Aviation Named Garmin Integrated Flight Deck Dealer

Wichita-Based Center Is Authorized To Sell And Install Garmin G1000 Through G5000 Avionics On Broad Range Of Business Aircraft Yingling Aviation has been named a Garmin Integrated >[...]

ANN's Daily Aero-Linx (12.04.16)

Aero Linx: The Colorado Airport Operators Association (CAOA) The Colorado Airport Operators Association (CAOA) serves the common interests of the owners, operators and users of the>[...]

ANN's Daily Aero-Term (12.04.16): Downburst

Downburst A strong downdraft which induces an outburst of damaging winds on or near the ground. Damaging winds, either straight or curved, are highly divergent. The sizes of downbu>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2016 Web Development & Design by Pauli Systems, LC