Thursday, September 30, 2010

Pratt & Whitney F100

The Pratt & Whitney F100 is a turbofan jet engine developed by Pratt & Whitney for the US Air Force to power the F-15 Eagle and F-16 Fighting Falcon. Regarded as one of the world's safest fighter engines, the F100 first flew in an F-15 Eagle in 1972 with a thrust of 23,930 lbf. Variants: the F100-100, F100-PW-200, F100-PW-220, and the F100-PW-229, which incorporates modern turbine materials, cooling management techniques, compressor aerodynamics, and electronic controls.

In 1967, the United States Navy and United States Air Force got together to invite bids for the construction of jet engines for the F-15 Eagle and the F-14 Tomcat. The combined program was called Advanced Turbine Engine Gas Generator (ATEGG) with goals to improve thrust and reduce weight to achieve a thrust-to-weight ratio of 9. The program requested proposals and would award Pratt & Whitney a contract in 1970 to produce F100-PW-100 (USAF) and F401-PW-400 (USN) engines.

Specifications for the Pratt & Whitney F100

Type: Afterburning turbofan
Dry weight: 3,740 lb
Length: 191 in
Diameter: 46.5 in
Compressor: Dual Spool Axial compressor with 3 fan and 10 compressor stages
Bypass ratio: 0.36:1
Combustors: annular
Turbine: 2 low-pressure and 2 high-pressure stages
Maximum thrust: 17,800 lbf (79.1 kN) military thrust; 29,160 lbf (129.6 kN) with afterburner
Overall pressure ratio: 32:1