普惠PT6涡桨、涡轴发动机结构及参数

PT6系列发动机是加拿大普惠公司的产品，包括涡桨和涡轴变种，是当前使用最为广泛的输出轴功率的航空发动机之一。在美国军用编号中，PT6的相应型号分别被命名为T74和T101。

与首台在1963年面世的450SHP轴马力的PT6A发动机相比，如今PT6发动机系列的功率增加了四倍，功重比提高了40%，燃油消耗率降低了20%。

据了解，PT6发动机已生产了52000多台，并被应用在130个不同领域，PT6发动机所在机队的飞行时间已累计多达3.9亿小时。在全球航空领域普遍进行的重要任务中都能找到PT6发动机，从救援工作到预定的客运服务，从货运服务到要客接送，从农业应用到军事飞行培训、从消防救火到搜救任务。PT6A发动机高可靠性也加速了20世纪80到90年代的单发涡桨飞机的发展。

PT6A是涡桨发动机，PT6B和PT6C是涡轴发动机。PT6发动机的各变种及参数如下：

PT6A

http://www.pwc.ca/en/engines/pt6a

PT6A家族包括了一系列自由涡轮涡桨发动机，输出功率500-1940shp（433-1447 kW）

Thermodynamic

Power

Class*

(ESHP***)Mechanical

Power

Class*

(SHP)

Propeller

Speed

(Max. RPM)

Height**

(Inches)

Width**

(Inches)

Length**

(Inches)

PT6A 'Small' (A-11 to A-140)600 to

1075

500 to

900

1,900 to

2,200

21 to

25

21.5

61.5 to

64

PT6A 'Medium' (A-41 to A-62)1,000 to

1,400

850 to

1,050

1,700 to

2,000

22 19.5

66 to

72

PT6A 'Large' (A-64 to A-68)1,400 to

1,900

700 to

1,700

1,700 to

2,000

22 19.5

69 to

75.5

T74

美国军方指定PT6A-20/27发动机的名称为T74

T101

美国军方指定PT6A-45R发动机的名称为T101-CP-100

PT6B

http://www.pwc.ca/en/engines/pt6b

PT6B-9

The PT6B-9 is a 550 hp (410.1 kW) turbo-shaft engine for use in helicopters. A later mark of PT6B is rated at 981 hp (731.5 kW).

PT6C

http://www.pwc.ca/en/engines/pt6c

PT6C

The PT6C is a 1600 to 2300 horsepower (1190 to 1720 kW) engine for helicopters and

tiltrotors.

PT6D

PT6D-114A

The PT6D-114A is based on the PT6A-114A. The main difference is the deletion of the second stage reduction gearing and output shaft, because the engine is intended for integration with a combining gearbox incorporating power turbine governors and a propeller output shaft.

Soloy Dual Pac

2x PT6D-114A engines driving a single propeller through a combining gearbox, capable of

independent operation.

PT6T

http://www.pwc.ca/en/engines/pt6t

Twin PT6 power units combining outputs through a gearbox for use in helicopters. ST6

ST6

ST6B

STN

STN 6/76

https:///wiki/Pratt_&_Whitney_Canada_PT6