Wed, May 06, 2009
OK... Around Here That WINS Bragging Rights
Pratt & Whitney Rocketdyne's
PWR-9221FJ dual-mode ramjet engine has successfully completed its
first ground test at Mach 4 flight conditions at the Arnold
Engineering Development Center, Tullahoma, Tenn. PWR tells us that
a dual-mode ramjet engine is a key technology for developing
reusable hypersonic vehicles.
"Successful demonstration of the dual-mode ramjet engine
integrated with a variable geometry inlet and exhaust nozzle sets
the stage for future turbine-based, combined-cycle propulsion and
flight demonstration opportunities," said Cal DeFreese, program
manager, Falcon Combined-Cycle Engine Technology (FaCET), Pratt
& Whitney Rocketdyne.
"Current testing is focused on
validating the operability and robustness of the dual-mode ramjet
design during simulated transitions from turbojet to ramjet
propulsion modes."
A dual-mode ramjet engine is designed to operate as both a
ramjet at moderate supersonic speeds (up to Mach 5) and a scramjet
at hypersonic speeds (greater than Mach 5). This broad range of
operational capability is required for turbine-based,
combined-cycle propulsion that would enable a vehicle to take off
from and land on a conventional runway, and travel at speeds up to
Mach 6.
The tests are being conducted as part of the Defense Advanced
Research Projects Agency's FaCET program; Pratt & Whitney
Rocketdyne is a principal contractor to Lockheed Martin on the
program. Additional tests over the next two months are designed to
check the integrated system performance from Mach 3 to Mach 6
flight conditions.
More News
Waypoint A predetermined geographical position used for route/instrument approach definition, progress reports, published VFR routes, visual reporting points or points for transiti>[...]
Aero Linx: Sentimental Journey to Cub Haven Sentimental Journey Flyin began in 1986 with a group of dedicated volunteers working to provide a sentimental return to Lock Haven, the >[...]
The Pilot Would Often Fly Over Their House At A Low Altitude And That Family Members Would Go Outside To Wave On November 14, 2025, at 1708 eastern standard time, a Jabiru USA Spor>[...]
From 2024 (YouTube Edition): Volatus Infrastructure Paves The Way The name “Volatus” seems to be everywhere these days, popping up in a series of partnerships and proje>[...]
Fortnite Conquers All, Klyde FMI: www.klydemorris.com>[...]
ANN's Daily Aero-Term (11.29.25): Waypoint
See All