This view shows the Walter HWK 109-509.C as it was exhibited in 1989.

 

This view shows the Walter HWK 109-509.C as it was exhibited in 1999.

This view, angled toward the fuel control section, shows the main part of the motor. The horizontally laid, silver unit towards the left is the main fuel flow and pressure equalising unit, connected to which is the silver C-Stoff feed pipe arising from the main fuel pump. First, second and third stage propellant delivery pipes for the main combustion unit are shown in red.

The cylindrical vessel is a T-Stoff header tank for the steam generator, which in this motor is slung beneath, inverted in its orientation, in comparison to the "A" Series motors.

The black pipes are the T-Stoff flow to and from the cooling jacket of the main combustion chamber. The blue pipes are the feed to the auxiliary cruising chamber. The yellow linkages are to the turbine steam control (silver, visible in front of the T-Stoff header tank) and from the pilot's throttle and represent the motor's power output and control system.

 

Viewed from the forward part of the motor looking aft, the fuel pump dominates the lower half of the motor. The T-Stoff pump to the right with its bifurcated output. On the left the C-Stoff pump - black pipe. The three closely grouped T-Stoff pipes from the three-stage output, and on the left the corresponding three C-Stoff pipes (each of a different diameter) all painted red lead out down the centre of the main thrust tube.

Just visible on the left, is the curving silver steam pipe which delivers the output steam to drive the turbine of the fuel pump.

Photographs © Shamus Reddin

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