Pratt & Whitney Canada PW308s To Power Virgin Galactic's White Knight II | Aero-News Network
Aero-News Network
RSS icon RSS feed
podcast icon MP3 podcast
Subscribe Aero-News e-mail Newsletter Subscribe

Airborne Unlimited -- Most Recent Daily Episodes

Episode Date

Airborne-Monday

Airborne-Tuesday

Airborne-Wednesday Airborne-Thursday

Airborne-Friday

Airborne On YouTube

Airborne-Unlimited-07.07.25

Airborne-NextGen-07.08.25

AirborneUnlimited-07.09.25

Airborne-FlightTraining-07.10.25

AirborneUnlimited-07.11.25

Wed, Jul 11, 2007

Pratt & Whitney Canada PW308s To Power Virgin Galactic's White Knight II

Will Evaluate Biofuels To Reduce Emissions For SpaceShipTwo Launcher

Pratt & Whitney Canada's PW308 turbofan engine has been selected by The Spaceship Company (TSC) -- a jointly-owned Virgin Galactic and Scaled Composites company -- to power the White Knight II (WK2) launch aircraft for the world's first commercial passenger suborbital spaceship SpaceShipTwo (SS2). Virgin Galactic is the launch customer for the SS2 system, having ordered five SS2 spacecraft with options for a further seven-plus WK2 carrier aircraft.

"We are delighted to welcome Pratt & Whitney Canada on board the White Knight II program," said Sir Richard Branson, founder of the Virgin Group of Companies and co-founder of The Spaceship Company. "With P&WC's excellent reputation and our mutual desire for innovation, it became clear that its PW308 engine is the best and most reliable solution available today to help make our aerospace adventure a true success."

"We are excited to be a part of this visionary commercial spaceship program that will open up new opportunities for people to fly into space," said Alain M. Bellemare, President, P&WC and Executive Vice President, Pratt & Whitney Group Strategy & Development. "Our global leadership is built on innovation and we look forward to helping shape the future of suborbital spaceflight with The Spaceship Company."

Equipped with its PW308 engines, the WK2 launch aircraft now under development by Scaled Composites will take off like an airplane with the manned SS2 attached underneath. It will launch SS2 into suborbital space from about 50,000 feet. The first flight of White Knight II is planned for 2008.

"We have been impressed with P&WC's enthusiasm for this groundbreaking project," said Burt Rutan, co-founder of TSC and CEO of Scaled Composites LLC, designers of SS1 and SS2. "The PW308 is a great engine for our new launch aircraft."

Rated at 6,900 pounds of normal takeoff thrust and equipped with full-authority, digital electronic controls (FADEC), the PW308 engine provides a combination of cruise thrust, fuel consumption and power-to-weight ratio considered best in its class.

P&WC will also team up with TSC and Virgin Fuels to evaluate the use of advanced biofuels in White Knight II, that could reduce engine emissions even further and make aircraft more environmentally friendly.

Virgin Galactic touts its space launch system as already the most environmentally friendly developed to date for the purpose of human spaceflight, science or payload. If the evaluation is successful, the use of biofuels in White Knight II could further reduce the overall carbon footprint of a flight into space by up to 50 percent, notes the enginemaker.

"The fully certified PW308 meets all thrust and schedule requirements of White Knight II," added Bellemare. "This is yet another demonstration of our technology leadership."

FMI: Read About The Spaceship Company On ANN, www.pwc.ca, www.scaled.com

Advertisement

More News

NTSB Final Report: Aviat A1

Airplane Bounced About 3 Ft Then Touched Back Down And Then, With No Brakes Applied, The Airplane Began Veering To The Left Analysis: The pilot entered the airport traffic pattern >[...]

ANN's Daily Aero-Linx (07.08.25)

Aero Linx: British Microlight Aircraft Association (BMAA) The primary focus within all aviation activity is SAFETY. In all aspects of our sport SAFETY must come first, whether it b>[...]

Classic Aero-TV: Fly Corvair’s Reliable Engine Alternative

From SnF25 (YouTube Edition): William Wynne Builds Practical Aircraft Engines on the Corvair Platform Seeking an affordable alternative to the traditional aircraft engine options, >[...]

ANN FAQ: Contributing To Aero-TV

How To Get A Story On Aero-TV News/Feature Programming How do I submit a story idea or lead to Aero-TV? If you would like to submit a story idea or lead, please contact Jim Campbel>[...]

Classic Aero-TV: CiES Fuel-Quantity and e-Throttle Systems Praised

From 2023 (YouTube Edition): Bridge of CiES CiES Inc. is a Bend, Oregon-based designer and manufacturer of modular embedded aircraft systems and sensors. The company’s fuel-l>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2025 Web Development & Design by Pauli Systems, LC