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 ...
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 ...
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 ...
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%. ...
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.
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 ...
Only top scored, non community-wiki answers of a minimum length are eligible
Related Tags
aerodynamics × 2033aircraft-design × 461
wing × 233
airfoil × 146
lift × 140
aircraft-performance × 139
drag × 133
aircraft-physics × 109
propeller × 84
stability × 79
flight-controls × 71
stall × 70
flight-dynamics × 69
angle-of-attack × 63
helicopter × 62
supersonic × 48
flaps × 43
jet-engine × 42
glider × 40
fluid-mechanics × 38
efficiency × 34
airliner × 31
general-aviation × 29
theory × 28
fluid-dynamics × 28