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Search: Posts Made By: procede
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Forum: Rumours & News
4th May 2016, 12:27
Replies: 82
Views: 43,771
Posted By procede

Slight problem is that the props also need to...

Slight problem is that the props also need to counteract drag, which is huge for a blimp at any significant speed.
Forum: Rumours & News
29th Apr 2016, 07:34
Replies: 82
Views: 43,771
Posted By procede

L/D of 20 is a bit optimistic at Mach 0.8. About...

L/D of 20 is a bit optimistic at Mach 0.8. About 16 is probably more realistic, so it would be 20MW per engine.
Forum: Rumours & News
29th Apr 2016, 06:02
Replies: 82
Views: 43,771
Posted By procede

L/D of about 20. Weight is 500 000 kg, thus 5...

L/D of about 20. Weight is 500 000 kg, thus 5 000 000 N.
Trust requied is 5MN/20=250kN. Cruise speed of 250 m/s results in 62.5 MW.
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