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by tutmeister
1834 days ago
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120 knots is normal cruise, 140 knots is fast cruise but that's at sea level. This drops off by 3 knots per 1,000' of density altitude. Airfield elevation at Tuscon is ~2400' and it was 58⁰F at 10 p.m. on Feb 9. Which puts density altitude at ground level around 2900', so the cruise speed drops around 9 knots, to 111 kias and 131 kias. I agree this UAS would need to be IC-powered due to the range and altitude the UAS supposedly reached, but I don't think the speed was as fast as many folks have been thinking. |
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