Jpe61
  • Member for 2 years, 5 months
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How could "aggressor" pilots fly foreign aircraft without speaking the language?
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71 votes

A couple of things come to mind that enable this: you don't become a fighter pilot if you are not intelligent and highly motivated you are not learning a new skill, just doing what you are already ...

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What operation is this aircraft performing?
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65 votes

The flight in question is most probably an evaluation/calibration flight for radio navigation systems at Ust-Kut. The aircraft is a Yak-40 special version designated for such tasks: Aviamuseum - Yak-...

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Why do airliners park with the nose facing the terminal?
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64 votes

To park a passenger plane with its tail towards the terminal has several disadvantages: it would require a pushback tractor (plus personnel) to do that. Thrust reversers in general are not meant for ...

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How can this kind of confusion about taxi instructions occur?
58 votes

I continue my series of "not actually an answer but I got to say this": The most valuable lesson you can learn from this is not figuring out afterwards what was said, but getting into a habit of ...

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Do turbofan engine cowlings dilate during spool-up?
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45 votes

Now that's an interesting phenomenon! I do not believe that this is a case of an illusion of any sort, or the engine dilating. What the video probably shows, is the engine slightly turning towards the ...

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Why does the F-16 canopy have a K-shaped 'latch'?
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42 votes

The function of the form is to act as a throttle stop when the part is in the position shown in the picture. It prevents full movement of the throttle when canopy is not securely closed and sealed. ...

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If stealth aircraft are invisible to radar, then how does their own Air Force manage them or see them in flight?
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40 votes

Like most military aircraft, the F-22 has a military equivalent of a transponder, an IFF system (Wikipedia): Identification, friend or foe (IFF) is a radar-based identification system designed for ...

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Has any accident been prevented by bending or breaking the rules?
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39 votes

First I have to admit that I have no idea what FAA regulations said about passengers taking part in controlling an airplane in 1989, but I guess it was at least frowned upon, even if the passenger ...

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Could the principle of owls' silent flight be used for stealth aircraft?
37 votes

In addition to quiet flyer's excellent answer: Owls have large wings in relation to their body size and weight. One might think that no, their bodies are quite large, but actually owls are kind of ...

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Why there so many pitch control surfaces on the Piaggio P180 Avanti?
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31 votes

Surface 1 is a horizontal stabilizer with elevator, just the same as on any other aircraft with a T tail arrangement. Surface 2 is called a rear strake or a tail fin. There is one on each side of ...

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What are those gray spots on the wing?
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29 votes

They are rivet ends. The paint seems to have a hard time sticking to those, not an uncommon sight on older planes. Thanks to Darrel Hoffman's comment, I did some digging: The phenomenon is known as ...

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What causes a Cessna 172 and its gear to shake violently after landing and braking?
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28 votes

I'm pretty sure you have encountered "nose wheel shimmy". For reference, see this video on Youtube: c172 M Nose wheel shimmy [sic]. The shimmy can occur for a variety of reason, most likely ...

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What are those half-vanes in the engine inlet of a 707-328?
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28 votes

You have a very interesting find there! It is in fact not an engine from a B707, but a Kuznetsov NK-8 from Russia. It was used in Ilyushin Il-62 and Tupolev Tu-154 aircraft. As for the intermediate ...

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Why do new engines have a case with a triangular tiling pattern?
27 votes

This is simply a way to achieve required rigidity/strength and vibration dampening with less material than in a solid, even thickness design. Varying the weave pattern gives a relatively easy and a ...

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Approx 1948 Brasil Brazil Airliner...what is it? Taildragger?
27 votes

The airliner in the picture is a Vickers VC.1 Viking, registration LV-AFI, of the former Argentinian operator Flota Aérea Mercante Argentina. According to this source, the plane served the ...

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Why are the colors of the MiG-15's attitude indicator inverted?
26 votes

This is interesting! The only lead I was able to find (so far) is this discussion thread, with a comment: The colour becomes logical, if you see it moving. Climbing the plane which shows the sky ...

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What can a pilot do if an air traffic controller is incapacitated?
26 votes

There's not much else they can do in a situation like this. ATC, in this case the tower controller is the only person(instance) that has a comprehensive enough view (both literally and metaphorically) ...

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Did the last US plane to leave Afghanistan have support from the control tower?
24 votes

Information about Afganistan airspace is published online at www.afgais.com. Last NOTAM published on OAKX (AFGANISTAN FIR) page reads as follows: (G1264/21 NOTAMN Q) OAKX/QAFAM/IV/NBO/E/000/999/ A) ...

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Why is this F/A-18 flying through a hailstorm of sparkles?
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24 votes

The sparks in the video come from the F-18's Vulcan cannon being fired at night. During daytime you'd only see muzzle flash accompanied by a pretty puff of smoke. Low light conditions bring out the ...

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Can passenger airliners hover completely motionless in the air?
24 votes

Unequivocally: no. Big airliners (or passenger planes of any size for that matter) do not hover in air. From a moving car, train or such it is possible to have an illusion that an airplane hovers ...

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Will computational fluid dynamics (CFD) ever be 100% correct?
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22 votes

This is a broad question, hence a broad answer 😃 As high eng CFD now stands, it already is correct enough for, say, 95% of use cases. I am not aware of much utility in modelling complex turbulent ...

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What is this large engine doing on a B52?
22 votes

The plane in the pictures is Boeing JB-52E -test plane. It used to test for instance the General Electric TF-39 engines for the C-5 Galaxy as it was under development

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Why did the SR-71 Blackbird have a light on its top?
21 votes

During missions the SR-71 had to be refuelled air to air many times. These missions took place also at night, so visual cues were absolutely necessary. Also the mission obviously were often flown ...

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How do witness marks on propeller blades provide data on estimated blade angles at the time of impact?
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17 votes

Note that the report says "derived from witness marks on the preload plates", so the investigators did not use witness marks on propeller blades to determine the blade angle. This might have ...

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How do helicopters avoid detection from enemies by using IR suppressors?
17 votes

To add to GdD's fine answer: The environment provides plenty of different heat sources for the missile to see. To get a target lock, the "signature" of the heatsource has to be of quite a specific ...

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What are those ball-shaped things on some helicopter blades?
16 votes

The devices are pendulum (or pendular) absorbers: Vibration suppression of helicopter blades by pendulum absorbers - Imao Nagasaka. The pendulum absorbers are used for suppressing the vibrations in ...

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Do black wings have better aerodynamics?
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16 votes

Heating the boundary layer has been shown to decrease drag: B. Kramer, B. Smith, J. Heid, Gregory K. Noffz, D. Richwine, Terry Ng, 1999: Drag reduction experiments using boundary layer heating ...

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Can the guard frequency be used by non-aircraft / general public?
15 votes

At least in the "jurisdiction" I'm somewhat familiar with, EASA and my country, licences are required for both the radio device and the operator of the radio. The training required for ...

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Is it recommended to get a life raft for short overwater operations?
15 votes

To amend John K's excellent answer: In the unfortunately unlikely event of you being able to get the life raft out of the sinking Cessna, you'd be soaking wet and operating it would be very hard. If ...

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Do jackscrews suffer from blowdown?
15 votes

Screws can be either self-locking or overhauling. Jackscrews used for stabilizer control are designed to be self-locking, since their purpose is to make the stabilizer adjustable, but prevent it from ...

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