Radar Indicator, CS-55ACE, ASD Surface-Search, WWII US Navy Eurofighter Typhoon

Radar Indicator, CS-55ACE, ASD Surface-Search, WWII US Navy Eurofighter TyphoonThe indicator is a CS 55ACE indicator for a WW2 US Navy Type ASD surface search radar system. The ASD was the first effective American microwave search radar, and was used in aircraft such as the US Navy's Patrol Bomber Lockheed PV 1 Ventura, PV 2 Harpoon, and Grumman TBF Avenger. Researching the internet reveals that Type ASD X band airborne search radar used this indicator as a B scope (range vs bearing) in US Navy patrol aircraft to detect ships

The indicator is a CS-55ACE indicator for a WW2 US Navy Type ASD surface-search radar system

This periscope appears to be new old stock

the gyro produced vertical attitude signals which were amplified and transmitted to the autopilot system and indicators on the flight deck of the aircraft

Here is a WWII-era pneumatic Directional Gyro/Turn Indicator made by Jack & Heintz

The knob rotates the barometric pressure adjustment

The gunner has set the target length and range on the sight using the knobs shown

but it is there and shows the spec # and serial #)

See photo of the location of the instrument on the Flight Engineers upper instrument panel from the C-121 flight manual dated 1958

each holding 0-60 gals

It has a calibration mechanism

The crystal glass was secured by a bezel and gaskets to seal the movement against dust

electrical input is required to test its full functionality