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Questions tagged [empennage]

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4 votes
2 answers

What type of airfoil should be used for horizontal tailplanes?

Don't aircraft use symmetrical tailplanes so as to not produce lifting forces when not needed? Im confused by people saying that they use upside-down cambered airfoils.
ageek245's user avatar
0 votes
4 answers

How much does the wing of a 6-seater plane weigh?

I could find plenty of information regarding the total weight (empty operating weight, maximum landing weight, and maximum takeoff weight) of every plane in commercial production. However, I could not ...
CoastCity Lapse 00crashtest's user avatar
11 votes
1 answer

Why don’t gliders use swallow tails?

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 ...
Romeo_4808N's user avatar
  • 74.2k
3 votes
1 answer

Why do so many UAVS use a V-tail configuration?

How different is V-tail from a conventional tail in the perspective of aerodynamics & flight dynamics of aircraft? I have seen that many UAVs, like the General Atomics MQ1 Predator, LSI Amber, ...
Kushal Galipally's user avatar
6 votes
1 answer

What is this part in Embraer Legacy 650 and what is it function?

The picture I took from here. If you want to see, just click the link, it will take you to the part I want to show and ask. What I want to know is its name and its function.
AirCraft Lover's user avatar
1 vote
1 answer

Do aircraft usually fly with CG at 50 percent of chord or do I need to reduce the tail volume?

I'm working on a design having a 3.2-metre wing with a constant chord section in the middle and taper on the sides. With a tail volume of about 0.68, the neutral point is at 60% chord from the leading ...
Mridul's user avatar
  • 1,222
1 vote
1 answer

Does the tailplane see a higher or lower airspeed than the wing?

The sweepback angle of the horizontal stabilizer is greater than that of the wing. I assume this is to reduce compressibility effects, but it would only make sense if the tailplane sees a higher ...
stevederekson555's user avatar
3 votes
0 answers

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 ...
stevederekson555's user avatar
3 votes
1 answer

Why does the Cessna 208 Amphibian have extra tail surfaces?

Mark Harkin, CC BY 2.0, via Wikimedia Commons I've seen extra tail surfaces that look like additional vertical stabilizers on the C208 Amphibian. Why is there a need for this? I can't imagine that ...
MD88Fan's user avatar
  • 2,494
1 vote
1 answer

Is there a better solution than the U-shaped tailplane for this Airbus concept?

Image source: This U-Shaped tail is from a concept aircraft from Airbus, I was wondering if there is an alternative but just as good solution to the U-shaped tail. Using a canard in the ...
Sherlock Homies's user avatar
1 vote
0 answers

How to calculate the the variation of Cl wrt the angle of defection of the elevator?

I've checked the lift requirements of the aircraft and selected an optimal airfoil and designed a wing with dimensions of MAC 47cm and semi-span of 163.2 cm and a airfoil S1223. The horizontal ...
falcon's user avatar
  • 11
3 votes
2 answers

Materials usually used in dorsals fins specifically in the ATR 72

I am an aerospace engineering student and I am having problems finding information about the materials usually used in the dorsal fin of an aircraft. I would also like to know the kind of stress and ...
Martin Moreno Vega's user avatar
7 votes
2 answers

Why do some T-tail aircraft have a protrusion on the top front of the tail? [duplicate]

Aircraft like the Tu-154 and VC-10 have a "point" on the T-tail, while others like the 727 do not. Is this structure a shock body, or otherwise related to the tail's aerodynamics? And why is it only ...
zymhan's user avatar
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