RACING TO PULSE DETONATION.
A division of GENERAL ELECTRIC and Pratt & Whitney----
two titans of jet-engine design
—are baffling to develop the first operational pulse-detonation engine.
GE 26,000; P&W 33,000
GE. $11.1 billion; P&W; $7.6 billion
• 1-A: First U.S. let engine (1941)
• J93: First Mach 3 engine (1957)
• GE9O-1 1 5B: World record for single-engine thrust: 127,900 lb. (2003)
P & W.
• J57: Powered first supersonic production aircraft, the F-100 Sabre fighter (1953)
• PW2000: First engine to use digital controls for maximum fuel efficiency (1984)
• Fl 1 9-PW-l00: Allowed supersonic cruise without afterburner, in F-22 Raptor (1997)
GE. Bench-scale experiments ($8 million invested since 1999)
P & W. Full-scale multi-chamber test engine ($20 million invested since 1993)
GE. Aerodynamic valve prevents airflow to the chamber at the appropriate time,
P & W. High-speed rotary valve cuts off air-flow to each of five combustion chambers; a pre-detonator initiates the transition.
GE. Hybrid PDE protoiype by 2005
P & W. Pure PDE missile prototype by 2005
GE. Hybrid engines for subsonic and super-sonic aircraft
P & W. Pure PDE missiles, then hybrids in military and passenger lets
Church of the Science of God
La Jolla, California 92038-3131
© Church of the Science of GOD, 1993