Turboshaft engine with a maximum and normal power rating of 2,200 and 1,850shp (1,640 and 1,380kW) and a pressure ratio of 6:1; high-speed version of the T55-L-3[21] allowed for use on the Chinook instead of the geared YT55-L-3 engine due to August 1958 engine contract modification, with the reduction gearing now provided in the helicopter power transmission system instead of the engine; 570lb (260kg) weight engine; first delivered for the Chinook in August 1960; powered first flight of the Chinook in October 1961; selected for the Curtiss-Wright X-19tiltrotor aircraft in August 1962;[5] 146 engines manufactured between 1960 and 1963 for the CH-47A[22]
T55-L-7
Turboshaft engine with a power rating of 2,650shp (1,980kW) and a BSFC of 0.61lb/(hp⋅h) (370g/kWh);[23] completed 150-hour qualification test in September 1962 at a 2,650shp (1,980kW) power rating;[5]
T55-L-7B
Military and normal power rating of 2,650 and 2,200shp (1,980 and 1,640kW); used on the CH-47A[24]
T55-L-7C
Turboshaft engine with a maximum, military, and normal power rating of 2,850,2,650, and 2,400shp (2,130,1,980, and 1,790kW); used on the CH-47B;[24] BSFC of 0.6lb/(hp⋅h) (360g/kWh);[23] passed qualification testing in September 1966[25]
YT55-L-9
Turboprop engine with a power rating of 2,445shp (1,823kW), weight of 795lb (361kg), pressure ratio of 6.4:1, and a BSFC of 0.62lb/(hp⋅h) (380g/kWh); used on the Rockwell YAT-28E;[12] also powered Piper Enforcer prototype aircraft for flight tests in 1971 and 1983-1984[26]
1 2 Schuegenpflug, Hermann、Wilcoxson, Tony、Luz, Michael (2010). FROM THE JEFF (B) TO THE SSC AND BEYOND, TF MARINE GAS TURBINES A DEVELOPMENT STUDY . Paper Number GT2010-23659. The American Society of Mechanical Engineers. p. 2
↑ Schuegenpflug, Hermann、Wilcoxson, Tony、Luz, Michael (2010). FROM THE JEFF (B) TO THE SSC AND BEYOND, TF MARINE GAS TURBINES A DEVELOPMENT STUDY . Paper Number GT2010-23659. The American Society of Mechanical Engineers. p. 2, 3
↑ Schuegenpflug, Hermann、Wilcoxson, Tony、Luz, Michael (2010). FROM THE JEFF (B) TO THE SSC AND BEYOND, TF MARINE GAS TURBINES A DEVELOPMENT STUDY . Paper Number GT2010-23659. The American Society of Mechanical Engineers. p. 3, 4
1 2 Silver, S., Lauriat, TB (1983). THE TF40B, A 4000 HP CLASS MARINE GAS TURBINE FOR THE US NAVY LCAC (PDF). Paper Number 83-GT-18. The American Society of Mechanical Engineers. p. 4
↑ Schuegenpflug, Hermann、Wilcoxson, Tony、Luz, Michael (2010). FROM THE JEFF (B) TO THE SSC AND BEYOND, TF MARINE GAS TURBINES A DEVELOPMENT STUDY . Paper Number GT2010-23659. The American Society of Mechanical Engineers. p. 4, 5
↑ Schuegenpflug, Hermann、Wilcoxson, Tony、Luz, Michael (2010). FROM THE JEFF (B) TO THE SSC AND BEYOND, TF MARINE GAS TURBINES A DEVELOPMENT STUDY . Paper Number GT2010-23659. The American Society of Mechanical Engineers. p. 5, 6
↑ Schuegenpflug, Hermann、Wilcoxson, Tony、Luz, Michael (2010). FROM THE JEFF (B) TO THE SSC AND BEYOND, TF MARINE GAS TURBINES A DEVELOPMENT STUDY . Paper Number GT2010-23659. The American Society of Mechanical Engineers. p. 6, 7
↑ Schuegenpflug, Hermann、Wilcoxson, Tony、Luz, Michael (2010). FROM THE JEFF (B) TO THE SSC AND BEYOND, TF MARINE GAS TURBINES A DEVELOPMENT STUDY . Paper Number GT2010-23659. The American Society of Mechanical Engineers. p. 7, 8
