Control, Bomb release Type B-2A

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The bomb release timer used on many US made WWII aircraft was used to time the release of bomb out of the aircraft. This allowed the pilots to accurately space the impact of the bombs based on airspeed. Generally the timing is adjustable from 0.08 second to 1 second between pulses.


Type b-2a front.jpg

The arrow points to the control in the trainer


There are three main controls

Interval Between Bombs 
Controls the time between the pulses
Bombs to be released 
controls the number of pulses 1-50
Sel / Train 
not sure what this is for.


Function

The B-2A connects two pins together on every pulse. These pins can be used to complete a circuit to drive a relay or similar switched item

'NOTE:' It does not provide any voltage on the connected pins, only acts as a momentary switch.


Hookup

Type b-2a schematic.jpg

Pins

Pin 1 
Start Cycle
Pin 2 
Output contact point
Pin 3 
Not used
Pin 4 
+ 24 Volt
Pin 5 
- 24 Volt


Videos

"Video Of Operation, Front View"

"Video of Operation, Rear View"


Other Images