How are empennage airfoils chosen? - Aviation Stack Exchange
2018年2月20日 · Static longitudinal stability criteria determine the area of the empennage - upon a disturbance in Angle of Attack, the total aircraft must generate a moment that counteracts the disturbance. Usually, wings and fuselage contribute negative stability, and the tailplane must be sized such that the stabilising moment compensates for this in all ...
What is meant by empennage height? - Aviation Stack Exchange
2015年8月1日 · The empennage height is the distance from the ground to the top of the tailfin. It determines the minimum clearance the aircraft needs to taxi under an obstruction. Share
Why don’t gliders use swallow tails? - Aviation Stack Exchange
2023年10月2日 · I’ve always wondered this. Why do gliders use a T-style tail, as opposed to a V-tail ie a swallow tail design? I think it would represent a significant reduction in weight over a conventional empennage, not to mention, offering a reduction in drag.
aerodynamics - What is the purpose of the tiny doors used by the …
The recent Oct 2021 YouTube video (The Insane Engineering of the 787 by Real Engineering) in the related question remarks: [...] tiny doors whose purpose are a mystery to me with little to no
aircraft design - Is the ATR empennage configuration considered a …
How is the ATR 42/72 empennage considered? Is it a T-Tail or a cruciform tail? From the image the elevators are placed quite high on the tail that they can be considered as a T-Tail but is it so?
Why is the empennage of some aircraft not placed on the …
2017年3月16日 · $\begingroup$ Looking at the picture, I see that the forward portion of the empennage fairing does not line up with what appears to be a joint in the skin structure. However, the joint may be off-center compared to the rivet placement. Looking at the empennage in person may reveal it to be off centerline, but this is not clear to me from the ...
safety - How are further structural failures prevented if an aft ...
2016年10月6日 · Unless there's an explosion or some catastrophic failure of the pressure vessel, escaping cabin pressure by itself cannot pressurize the open empennage. Pressurized aircraft also have a safety valve to protect the pressure vessel from structural damage in the event of outflow valve failure.
How are the dimensions of the empennage determined for jetliners?
2017年12月25日 · How is the height of the vertical and span of the horizontal stabilizers determined for different turbofan aircraft like the Airbus A380 and the Boeing 747-8? What are the maximum forces (in kilog...
empennage - Does the tailplane see a higher or lower airspeed …
2021年8月28日 · Usually it has to be about 5° higher as the the Wing so the critical Machnumber is higher for the Empennage. You dont wanna lose efficiency due to shock waves on the tails (tails have always to work). There are also rules for the thickness and other parameters of the Empennage. You can find some more of them here.
Newest 'empennage' Questions - Aviation Stack Exchange
Are empennage airfoils always symmetric in conventional airliners? I'm specifically interested in these models: A319, B737-700, A220, E195-E2. You could call these conventional airliners, so I suppose the question is if these "conventional" planes have only ...