MIL-T-46591B
been obtained from the cognizant Navy design activity prior to manufacture. When alternate materials or methods of manufacture are specified on the drawings, the bidder's selections shall be clearly stated in the proposal.
3.2 Components.
3.2.1 Primary components. For the purpose of this specification, the M94 impulse cartridge (Drawing
8596708) is defined as a primary component. Only primary components from a single lot shall be used in a production lot of thrusters; however, one primary component production lot may be used in more than one thruster production lot.
3.2.2 Component parts. All component parts shall meet the applicable requirements of MIL-T-46590 or MIL-T-60694 prior to assembly.
3.3 Torque. Torque requirements shall be as specified in table I. No movement shall occur upon application of the breakaway torque.
TABLE I. Torque requirements.
|
Components |
A |
B |
Seating or bottoming (inch pounds) |
Breakaway, min (inch pounds) |
|
Firing pin housing and body |
600 + 30 |
400 |
3.4 Residual magnetism. The thruster shall not deflect the indicator of the compass more than five degrees in either direction (see 4.3.2).
3.5 Radiographic examination. Each thruster assembly shall be radiographically examined for defects
(see 4.3.3).
3.7 Functional.
3.7.1 Load. The thruster, fired under load, shall perform as follows (see 6.3).
3.7.2 Thrust. With the piston rod connected to an 11-pound mass, the thruster shall deliver sufficient thrust to shear a 3750-pound shear pin located at zero inches stroke and simultaneously overcome a 2250- pound resistive load from zero inches stroke to completion of stroke.
3.7.3 Stroke. Complete a stroke of 4.42 inches, minimum.
3.7.4 Operating time. Time between initiation of cartridge to completion of stroke shall not be less than
750 milliseconds.
3.7.5 After load firing.
3
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