8
votes
Accepted
How high could modern transonic commercial transport designers reasonably push L/D ratios?
First of all, I am sceptical regarding your graph. The Fokker F-28 or the Short 360 are way too good while the Boeing 767 looks poorer than what other sources claim. Size alone helps already by making ...
- 218k
3
votes
Wouldn't a triplane be much more efficient than a monoplane of same wing area and span?
I know, this answer is almost three years late, but the existing answers leave important issues open.
Now make it a triplane, which reduces the chord to roughly 1/3, increasing the aspect ratio from ...
- 218k
1
vote
Interpreting a graph depicting airfoil technology improvement
I don't think this graph is supposed to be very quantitative, otherwise there would be a "real" scale on both axes instead of the two-ended arrows and the hatched lines would be actual ...
- 857
1
vote
Wouldn't a triplane be much more efficient than a monoplane of same wing area and span?
Also three years late...
From this comparison of mono, biplane and triplane efficiency, in level flight the triplane is only 70% as efficient as the mono, and the biplane is slightly better at 74%. ...
- 16.6k
1
vote
How does maximum speed vary with altitude?
From sea level to Ionospheres, it first increases because air drag decreases with altitude, until at a certain altitude the maximum velocity starts to decrease because engine performance decreases.
- 11
1
vote
How to calculate the induced drag coefficient?
In the course of looking for other aero data I stumbled across this rather old question. For any future searcher like myself I thought to add a bit more info in case it could be useful.
e - Oswald ...
- 365
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