Quote:
15~20,000 ft/min: I suppose I ought to do the stubby pencil math and see how that fits in with BEA's estimated g-loads at impact.
Wouldn't you need to know exactly how deep was the penetration of the sea surface? Have we any information on 'compliance' at water surfaces in these cases.
@Lonewolf and HarryMann
if you stopp a falling pelvis with a vertical speed of 15000 ft/min (15000*0,3/60 =75 m/sec) with a constant force of 100 g-load`s (100g=981m/secē) it stopps to zerro after 75/981= 0,076 sec and a way of less than 3m !
water is nearly incompressible at this speed, (within 0,07 sec it can not move much to the side), it makes not realy a grate difference if you crash into concrete or water with 75m/sec !
and this very short stoppway is plausible:
ca. 3m will be the sum of the compressible space between the pelvis and the water, (the space under the seat, the airspace into the baggage compartment, and the construction space in the lower fuselage.....)
grity