This is the mock up for the Dowty Rotol Ram Air Turbine (RAT) for the Tornado F3 Air Defence Variant (ADV).
It was a 4 bladed, 12,000 rpm constant speed (by variable blade pitch) turbine driving a Vickers, 4,000 psig, constant HP, hydraulic pump.
The RAT auto deployed in flight and supplied emergency hydraulic power to control the aircraft in the event of a double engine flame out, considered possible, in one particular operating domain.
The RAT provided emergency flying control power while the aircraft partially descended and re-lit the engines.
Once relit and normal hydraulic restored, the RAT was auto retracted and the flight continued.
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Hi Bob,
Ah, the first RAT I worked on. From memory, part number 680409002, the 001 having the disc springs. As well as the red colour the other dead give away that it’s a mock up is there is no carbon seal leak.
(How many helium light bands? Think it was 2 or 3.)
Ex minion
Dave
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