2 JUNE 1958
` INTERVALOMETER, ORDNANCE, RELEASE TD-239/A "
This specification has been approved by the
Bureau of Aeronautics, Department of the Navy.
The equipment covered by this Specification shall generate pulses, recurring at
precise intervals of time, which are suitable for direct operation of release solenoids of bomb
racks and other store suspension equipment. This equipment shall be such that the use of tables,
or "graphs, is unnecessary to provide the proper time interval associated with a desired ground
spacing between dropped stores when the aircraft ground speed is manually inserted. The inter-
valometer shall also control the number of stores expended.
" APPLICABLE DOCUMENTS
General - The following documents of the issue in effect on the date of invitation
for bids, form a part of this specification.
Cases; Bases, Mounting; and Mounts, Vibration (For
MIL- C- 172
use with Electronic Equipment in Aircraft)
Crystal Units, Quartz
Electron Tubes, Choice and Application of
Wiring, Aircraftj Installation of
Electronic Equipment, Aircraft, General Specification
Enviromental, Testing, Aircraft Electronic Equipment
Interference Limits; Tests and Design Requirements,
Aircraft Electrical and Electronic Equipment
Control Panel; Aircraft Equipment, Rack or Console
Plate, Plastic, Cockpit and Interior Controls Lighting
Electric Power, Aircraft Characteristics of