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#20
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Life glider hours with winch
On Friday, March 22, 2019 at 10:22:07 AM UTC-7, I wrote:
Taking the ASK21 maximum non-lifting mass of 410 kg as our metric, the ratio in question is 1000/410 = 2.43. I think I miscalculated. If we're considering the root bending moment caused by a launch that applies 1000 kg downward to an ASK21, we also have to consider the load applied by the non-lifting mass of the glider itself. The load being reacted by the wings is actually: 1000 kg delivered by winch cable 410 kg delivered by non-lifting mass of glider ------ 1410 kg The ratio 1410/410 = 3.44 is the equivalent g load of the bending moment reacted by the wings. Which puts us back in the neighborhood of the 3.5g I originally cited. --Bob K. |
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