Home > Standards > Military Guidelines > MIL-HDBK-5400 Paragraph 4.6.2.6: Shock

MIL-HDBK-5400 Paragraph 4.6.2.6: Shock



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MIL-HDBK-5400 Paragraph 4.6.2.6: Shock outlines guidellines pertaining to impact shock for electronic equipment for airborne applications.

The guidelines in this paragraph are the following:

4.6.2.6.1: Equipment — Equipment (with vibration isolators in place, if any) should not suffer damage or subsequently fail to provide the performance specified in the detail specification when subjected to 18 impact shocks of 20g, consisting of 3 shocks in' opposite directions along each 3 mutually perpendicular axes, each shock impulse having a time duration of 6 to 9 milliseconds. The "g" value should be within ±10 percent when measured with a 0.2 to 250 Hz filter.

4.6.2.6.2 Mounting base (crash safety) — With excursion stops or bumpers in place and with maximum rated load applied in a normal manner; the mounting base, individual isolators; or other attaching devices should withstand at least 12 impact shocks of 40g, consisting of 2 shocks in opposite directions along each of 3 mutually perpendicular axis. Each shock impulse should have time duration of 6 to 9 milliseconds. The "g" value should be within ±10 percent when measured with a 0.2 to 250 Hz filter. Bending and distortion should be permitted; however, there should be no failure to the attaching joints, and the equipment or dummy load should remain in place.

4.6;2.6.3 Bench handling — The equipment should withstand the shock environment encountered during servicing.


The MIL-HDBK-5400 General Guidelines for Airborne Electronic Equipment Military Handbook provides guidance for implementing and tailoring guidelines and documents contained in MlL-HDBK-454 Standard General Guidelines for Electronic Equipment, which have applicability in the design and production of electronic equipment for airborne applications. The guidelines outlined in this handbook are for guidance only and should not by cited as a requirement.