PACKAGING DATA SHEET
Packaging of Mount, Telescope: M138
(Copies of specifications, standards, drawings, and packaging data sheets
required by suppliers in connection with specific procurement functions
should be obtained from the procuring activity or as directed by the con-
3.1 Fabrication. - The mount shall be manufactured in accordance with
Drawing F8587500 and drawings pertaining thereto.
3.2 General specification. - The contractor shall be responsible for
adherence to the following requirements of MIL-F-13926:
Order of precedence
Protective finished surfaces
Finish, painting and protective
Part identification and marking
3.3.1 Operating temperatures. - The mount shall meet the applicable
requirements of 3.4.3 while exposed and thermally stabilized at ambient
temperatures of plus 150 degrees and minus 40 degrees Fahrenheit (F)
subsequent to which the mount shall meet the requirements of 3.3.2.
3.3.2 Vibration. - With the mount in the normal operating position, it
shall be vibrated in a vertical plane at a constant frequency of 30 cycles
per second with an amplitude of 1/16 inch (1/8 inch maximum excursion) for
a period of 5 minutes plus or minus 15 seconds. Subsequent to vibration,
the mount shall show no evidence of loose or damaged parts and the mount
shall meet the requirements of 3.3.3 to 3.5 inclusive.
3.3.3 Sealing. - The mount shall meet the requirements of Procedure I
of the rain test of MIL-F-13926.
3.4.1 Orientation.- The mount shall be positioned as follows:
(a) The flat mounting surfaces of mount in a horizontal plane.
(b) The axis of the telescope socket parallel to the flat mount-
ing surface and parallel to the plane of the centers of the two mounting
bolt holes on the left side of the mount.