This is part four of a series of blog posts concerning the MIL-STD 810 Vibration Section. This blog was written with reference to MIL-STD-810G w/Change 1 dated 15 April 2014. DES has the experience and expertise to help you determine what profiles are appropriate for your product and to run your MIL-STD-810 vibration test. For more information, please check out our Vibration Testing services page and our other MIL-STD-810 vibration testing blog articles:
MIL-STD-810 Vibration Testing Overview
MIL-STD-810: Vibration Testing Category 4 – Truck/Trailer – Secured Cargo
MIL-STD-810: Vibration Testing Category 9 – Aircraft – Helicopter
MIL-STD-810: Vibration Testing Category 7 – Aircraft – Jet
Category 8 of Method 514.7 simulates the vibration environment for cargo carried in propeller aircraft. The vibration environment generated from propeller aircraft are dominated by high amplitude approximately sinusoidal spikes at propeller passage frequency and harmonics. Lower level wide band random vibration is also present due to air flow over the aircraft. Collectively, these phenomena are superimposed to create the vibration profile for cargo carried on propeller aircraft resulting in a Mixed Mode Vibration Test.
Figure 1 and Table 1 show the vibration profile for this environmental condition. The test durations are obtained from the products life cycle environment or one hour per axis if the duration is unknown.
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