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Old 3rd Dec 2012, 12:36
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Dg800
 
Join Date: Mar 2011
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You obviously haven't watched the video. At approx 28.30 ...

"The impact velocity under chute is 17 knots.
The impact velocity at 60 knots is 12 times more energy.
At 100 knots, it is 34 times more energy.
At 180 knots, it is 112 times more energy."
This is utterly meaningless as it assumes an "impact" will be the inevitable outcome and this is in fact only true when the chute is deployed . If you really have a suitable field and do everything reasonably right, the chance you will impact anything are near to zero and hence the impact energy will be zero too (or well within the limits of what the undercarriage is designed to sustain).
The last statement is particularly meaningless. Unless the Cirrus has an approach speed near 180 knots, which I seriously doubt, the only situation in which you might impact at such a speed is in case of total loss of control (such as when spinning or after the horizontal stabilizer has set a different course than the rest of the airframe) in which case there really is no other option than the BRS.
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