Figure 9.15. Temperature Compensator, -700.
Compressor discharge pressure (PC) is applied to the compensator. This pressure source
is used to produce a pressure signal to the fuel control unit. The compensator changes the pressure
signal to the fuel control to produce an acceleration schedule, based on inlet air temperature, to prevent
compressor stall or excessive turbine temperature.
The starting control consists of a ported plunger sliding in a ported housing.
schematic of the starting control fuel flow is shown in figure 9.16.
Rotational movement of the input lever is converted to a linear movement of the
plunger through a rack and pinion engagement. A pressurizing valve, located at the inlet to the control,
maintains a minimum pressure in the fuel control to insure correct metering. This valve permits the
primary manifold to fill initially for lightup, and as pressure increases in the control, the transfer valve
opens. This allows fuel to flow into secondary manifold.
The fuel manifold assembly delivers a constant supply of high pressure fuel from the
starting control to two sets of seven fuel manifold adapters with simplex nozzles. The dual manifold
consists of 28 short fuel transfer tubes fitted with O-rings at each end and interconnected by 14 fuel
manifold adapters. Locking plates