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Thread: Hawker Typhoon 1B Car Door Heated Pressure Head.

  1. #1
    Join Date
    Jan 2014
    Cheltenham. Glos.

    Hawker Typhoon 1B Car Door Heated Pressure Head.

    Seeking info on a component fitted exclusively to the car door version of the Hawker Typhoon 1B.
    It's no use checking out the other survivors as they are all bubble canopy versions and had a different system fitted.
    The component in question is the Heated Pressure Head (circled in the pic below); and is fitted aft of the radio aerial,
    protected by a horseshoe-shaped ice shroud (P/No: A.111757) on top of the insulation panel attached to the rear perspex panel
    It appears in the A.P. wiring list diagram but gives no further information.
    Any information would be much appreciated.
    Name:  Pressure head.png
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    The Heated Pressure Head was the external temperature sensor unit of the I.F.F. system and sent a signal to the Contactor Master Unit (10A/10994) high precision clockwork mechanism with a built-in thermostatically controlled heater ensuring that its temperature remained stable, whatever the height of the aircraft. It may well be that the Hurricane employed a similar sensor unit
    Last edited by windhover; 12th June 2018 at 19:12. Reason: additional info

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