 |
|||
|
|
|||
| ||||||||||
|
|  MIL-T-45499C
3.2 Components.
3.2.1 Primary components. For the purpose of this specification, the M42A1 impulse cartridge
(Drawing 8593889) 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-45498
or MIL-T-50356 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.
A
B
C
Components
Seating or bottoming
Breakaway, min
Run On, min (inch pounds)
(including A) (inch pounds)
(inch pounds)
Head and cartridge retainer
40
300 20
200
Head and body
40
600 20
400
3.4 Trunnion rotation. Upon completion of assembly, the trunnion shall be free to rotate 360 degrees.
3.4.1 Structural strength. The assembled thruster shall withstand a static tensile force of 2000 pounds,
minimum, for 15 seconds, minimum, between mounting points without unlocking and without mechanical
failure (see 6.5.1).
3.4.2 End sleeve rotation. Upon completion of assembly and after the structural strength test, the end
sleeve shall be free to rotate 360 degrees in a clockwise direction.
3.5 Residual magnetism. The thruster shall not deflect the indicator of the compass more than five
degrees in either direction (see 4.3.3).
3.6 Radiographic examination. Each thruster assembly shall be radiographically examined for defects
(see 4.3.4).
3.7 Functional.
3.7.1 Load. The thruster, loaded with an acceptable lot of cartridges and fired under load (see 6.3), shall
perform as follows: With the piston connected to a 20-pound weight, the piston shall push the weight along
a horizontal path of travel, and simultaneously the moving piston and weight shall overcome restraining forces
of 1000 pounds, 6000 pounds, 3200 pounds, and 1000 pounds, the restraining forces being located from the
initial point of travel, a distance of zero inches, 0.25 inches, 0.40 inches, and 0.75 inches, respectively. After
completely overcoming the restraining forces, the piston shall complete its stroke of 2 inches, minimum.
3
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals