Originally Posted by Nick Lappos
It is surprising at first glance, but you can seriously damage your aircraft if you sit it on a trailer and then bounce it.
Interesting point! Vehicle on&off highway suspensions are designed for 3g "bounce" static accel. This assumes 1g nominal and +/-1g, since driver will naturally limit speed as he feels reduced g. The extra g is to give the vehicle margin for the occasional bump that even the most careful driver will experience. A good suspension system will aim to "isolate" above ~1Hz, with vehicle structural modes being ideally 2+ octaves above that (hard to achieve for the really big stuff, if you're are aiming at ~1.6 payload/vehicle mass).
So worse case scenario is that the heli systems will see 3g loads, which can be magnified by either undamped trailer suspension or any mounting system! Even worse is that a running gas turbine will have higher rotational inertia, so when static may rattle away at it's bearings on a trailer...
Maybe a giant "baby bouncer" supporting the rotor hub?
Landing Oleos can be thought of as very soft overdamped suspension, so will help.
Mart