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116 votes
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Why did my flight climb so sharply on takeoff?

Your flight took off during a storm. During a storm, the wind speed close to the surface of the earth is much lower than the wind speed a bit higher up. This variation of wind speed over a short ...
DeltaLima's user avatar
  • 83.5k
93 votes
Accepted

Has an airplane ever been launched from a submarine?

Yes, The HMS M2 had a single seaplane aboard that it was capable of launching. Her 12-inch gun was removed, replaced by a small aircraft hangar, the work being completed in 1927. This could ...
Dave's user avatar
  • 101k
90 votes
Accepted

Why don't short runways use ramps for takeoff?

V1. There are other valid reasons, as have been listed - cost, bidirectional runway use, etc. These would still not completely disqualify ramps, just limit them to very special circumstances. But the ...
Therac's user avatar
  • 27.4k
83 votes

Why is indicated airspeed rather than ground speed used during the takeoff roll?

Because wings work on air moving past them, not ground moving below them. Heck, in a 35 knot headwind, the Antonov-2 could be rolling backwards at 2 knots and still take off!
Harper - Reinstate Monica's user avatar
68 votes
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Why are bird strikes on approach or landing not as common as on takeoff?

I've heard about lots of bird strike incidents that occured during a takeoff roll or the early phase of takeoff climb but hardly heard of bird strikes on approach or landing. This is always a ...
Noah Krasser's user avatar
  • 9,002
56 votes
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How can Ural Airlines fly an A320 from an unpaved field after an emergency landing?

TLDR: cold winter will freeze the ground and make it hard enough. First, there was a similar case of Alrosa flight 514 that landed on a disused runway in Izhma in September 2010, was fixed and flew to ...
culebrón's user avatar
  • 1,035
52 votes

Would a takeoff be aborted if 'rotate' is not called out?

That could end up being a really bad idea if you've accelerated past your V1 speed -- your abort would then put you off the end of the runway, and the consequences from that range from bad to ...
Ralph J's user avatar
  • 51.8k
50 votes

Why don't short runways use ramps for takeoff?

Because then you can only land in one direction. What do you do if the wind blows exactly along the runway so that departing and landing planes have only tailwind then? You would waste a precious ...
Federico's user avatar
  • 32.6k
46 votes

Why would an F-35 take off with air brakes behind the cockpit extended?

That is not the air brake, but the cover for the vertical air intake on the F-35B model, which is operated by the RAF.
WPNSGuy's user avatar
  • 9,037
45 votes
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Could airliners use a steam or electric powered catapult for take-off?

Let's see what the savings are: A mid-sized airliner carries maybe 20% of its mass in fuel. This fuel has an energy density of 43 MJ per kg. Of that chemical energy at most 40% is converted into ...
Peter Kämpf's user avatar
45 votes

When does an airliner switch from using the tiller to the rudder?

I flew for two 747 carriers that never bought new aircraft, and thus this answer applies to 747-100/200 aircraft as originally manufactured for a number of different airlines. The tiller is active ...
Terry's user avatar
  • 39.2k
43 votes

Why is indicated airspeed rather than ground speed used during the takeoff roll?

Because what determines the amount of lift generated is the indicated airspeed, not the ground speed. As usual, it is always easier to think about an extreme case. If you have an aircraft with VR (...
DeepSpace's user avatar
  • 4,495
41 votes
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Is an Airbus A319 allowed to fly with a missing flap track fairing?

Fully permitted according to this Configuration Deviation List for the A320: One fairing may be partly or completely missing. There are more posts about this occurring. As Noah Krasser points out, ...
Thunderstrike's user avatar
41 votes
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Why does the Eurofighter Typhoon pitch up on brake release?

When the brakes are on, they apply a backwards force that counters the engine thrust. This force is applied at ground level, and the engine thrust is higher. These two forces result in a moment that ...
Robin Bennett's user avatar
41 votes
Accepted

Why is this plane struggling to gain altitude?

According to the video's information: EMB-721 Sertanejo heavy and insane takeoff in Carlos Prates This is "EMB-721 Sertanejo heavy and insane takeoff in Carlos Prates. Full fuel, 6 on board plus ...
PcMan's user avatar
  • 560
40 votes
Accepted

What are those hatches on the engines of a B-2 that are open during takeoff?

These are secondary intake doors which allow more air to reach the engines. They are opened by the engine control computer when the main intakes are not providing enough air for the power setting of ...
Peter Kämpf's user avatar
40 votes
Accepted

Has someone with no experience at all ever taken off in a plane? Could they?

The Aviation Safety Network has an article listing 11 airplanes that crashed after being stolen by a non-pilot. The most recent was the Horizon Air Dash 8 that was stolen by a ground service agent in ...
fooot's user avatar
  • 73.4k
39 votes
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Why do pilots slowly give the plane more thrust during takeoff?

The engines may accelerate slightly differently, resulting in an asymmetric thrust. Spooling up slowly at first (normally to about 60% N1) prevents this. After that, you can accelerate up to full TO/...
tsg's user avatar
  • 2,761
37 votes
Accepted

What is the guy in green showing to the F/A-18E pilot before catapult launch?

That's a weight check. The sign has the weight of the aircraft in pounds. The catapult crew guy first shows the presumed weight to the PIC who must give a thumbs up, agreeing, "Yes, that is the weight ...
Tyler Durden's user avatar
  • 13.3k
37 votes
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Why would a turboprop rev down just before going full throttle during takeoff?

Because the pilot is taxiing the airplane with the props in the beta range (turboprops turn into landsharks if you don’t do this and you end up really riding the brakes to keep the speed down), then ...
Romeo_4808N's user avatar
  • 73.9k
34 votes
Accepted

How do hot air balloons get started (without burning the fabric)?

The balloon is spread out on the ground and rigged to the basket. Then, a cold air blower is used to do the initial inflation, blowing air into the envelope through the bottom aperture. This gets the ...
Airsick's user avatar
  • 356
32 votes
Accepted

What makes snow on the wings during take off so dangerous?

it is not obvious if it could alter the wing shape for this to be a problem It may not be obvious but it is so. Plain old snow will just blow off as soon as the plane picks up speed, but if the wing ...
A. I. Breveleri's user avatar
32 votes

Why would a turboprop rev down just before going full throttle during takeoff?

It's because he was taxiing in DISC (discing, or flat pitch making the prop like a big disc), which is in the ground beta range, then coming out of it. Beta range is a mode where propeller blade ...
John K's user avatar
  • 132k
31 votes
Accepted

Do pilots reject takeoff if aircraft doors are not properly locked down?

The crew has already secured the door just before leaving the gate, cross-checked them and the pilots saw the sensors indicate closed. So if the warning goes off during take-off roll, it is not ...
Jan Hudec's user avatar
  • 56.3k
30 votes
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Why is a 0 kt, vertical climb in a helicopter not safe near the ground?

A vertical take-off, known as a "towering" or "confined area" take-off, is normally only used when it is not possible to take-off and remain in ground effect before gaining speed and climbing away. ...
Simon's user avatar
  • 31.3k
29 votes

How high does the ground effect last?

There is no height at which ground effect is switched off. It just becomes less and less effective. There are two factors which determine how strong ground effect is.: Height relative to wingspan: ...
Peter Kämpf's user avatar
29 votes
Accepted

What is the name of the movement which is carried out by plane beginning from the runway and ending at takeoff?

Takeoff Roll As per the FAA handbook (page 5-2) Takeoff roll (ground roll) is the portion of the takeoff procedure during which the airplane is accelerated from a standstill to an airspeed ...
Dave's user avatar
  • 101k
29 votes
Accepted

Did I witness an engine test for a 757 at MAN?

See this avherald report: https://avherald.com/h?article=4db1ccdb&opt=1 A Jet2.com Boeing 757-200, registration G-LSAN performing a test flight from Manchester,EN to Manchester,EN (UK), was in ...
Sanchises's user avatar
  • 13.4k

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