RM 8A Viggenengine
RM 8A Viggenengine
The RM 8 is a dual-current motor.
Part of the air is led into an external duct from the fan where it passes past the combustion chambers and is re-mixed with the hot combustion gases in the outlet.
This gives lower fuel consumption at cruising speed than a single-current engine and enables a large traction power addition with the afterburner lit. The fuel consumption will then be approx. 1000 lit/min!.
Engine Data and Performance
Engine weight: 2100 kg
Length: 6,16 m
Inlet diameter: 1,03 m
Compressor pressure: 16,5:1
Axial compressor with number of compressor stages
Fan + low pressure compressor 2 +4
High pressure compressor 7
Combustion chamber: 9 flame tubes
Number of turbine stages:
High pressure turbine: 1
Low pressure turbine: 3
Traction idle: 330 kp/3.2 kN
Traction off EBK: 6690 kp/65.6 KN
Traction on EBK: 11790 kp/115.6 KN
Bypass: 0.97:1
Turbine temperature: 1120 °C
Traction / Weight: 5.4:1
Revolutions per minute: 11 620