All Questions

0
votes
0answers
102 views

Difference between WW1 fighters and WW2? [on hold]

I am doing a research task on aviation in the world wars and was wondering if anyone could help me give a good answer to this question. Can you tell me what the key differences were and when they came ...
0
votes
0answers
28 views

Are there equivalents to the USA's HIMS programme in other regions?

The question How to determine if pilots in crashes flew again? made me think about the Human Intervention Motivation Study programme (see the answer https://aviation.stackexchange.com/a/65410/14197) ...
1
vote
1answer
131 views

What does “FG BNK” mean in a metar?

Here's the KLAX METAR 2153Z observation: KLAX 102153Z 27010KT 10SM FEW002 BKN200 24/16 A2997 RMK AO2 SLP147 FG BNK S-NW T02390156 $
2
votes
2answers
143 views

Are modern commercial airliners flyable without operational computer systems?

Do modern commercial airliners have manual control capability to fly and land if electric power remains on but all computer systems and digital communication/guidance fails?
6
votes
3answers
4k views

How strong someone should be in order to fly without “power steering”?

Planes these days use fly by wire systems while older ones had a mix of hydraulics with electronic assistance like the MD-11 (And maybe 737-800?). But what would happen if you lost the electronic ...
5
votes
1answer
168 views

Sukhoi Superjet 100 avionics

The Sukhoi Superjet 100 features flight control system with characteristics copied from Airbus. Side-sticks, same control laws. But does it actually use any of the hardware or software from Airbus (...
4
votes
0answers
64 views

Does/Can combustion instabilities occur in SCRAM jet?

I was told that combustion occurs at Supersonic speeds in SCRAM jet. So acoustic disturbances/ pressure fluctuations can't travel into incoming jet stream. Does this avoids combustion instabilities in ...
0
votes
0answers
66 views

What is the service cycle or interval of the Landing gear of an A380 and 747-800

What is the service cycle or interval of the Landing gear of an A380 and 747-800, i.e how long between service, eg after how many take offs and landings with particular reference to bearing checks and ...
-5
votes
1answer
122 views

What would happen if one smeared a generous amount of grease on the gears of the geared turbofan jet engine

What would happen if one smeared a generous amount of grease on all the gears or parts of the gearbox of the geared turbofan engine such that no tooth is left without grease to the extent that it is ...
2
votes
1answer
90 views

How may one notify the FAA of the apparent flaw in the airspace design at KEGE?

Several questions and answers have addressed the design of the airspace around KEGE. The situation is perhaps best summarized in this answer -- Can the Class-E-to-surface airspace near Eagle County ...
21
votes
2answers
4k views

Placement of positioning lights on A320 winglets

I was flying with an A320-214 that had big winglets (I think they were called Sharklets). I noticed that the positioning lights were facing forward on the leading edge of the winglet (the "notch" in ...
1
vote
1answer
24 views

What is the difference between iSpec2200 and S1000D specifications?

I know the iSpec2200 and S1000D are the specifications which are used in the aircraft maintenance manual, I have to know how they actually work in the aviation domain and what is the difference ...
0
votes
1answer
51 views

Propeller effect on the L/D of an aircraft (Pusher Propeller configuration)

I recently performed an aerodynamic analysis of a fixed-wing UAV with a pusher propeller configuration. I found out that the L/D reduced by about 15% when compared to the body alone without propeller. ...
0
votes
0answers
53 views

What are good Aviation Books to master to be a true expert? [closed]

I'm starting my airline pilot career and would like to seek inputs on what are the books that you recommend mastering/reading to add on to your knowledge bank, and hopefully never need to command ...
15
votes
6answers
4k views

Why do (or did, until very recently) aircraft transponders wait to be interrogated before broadcasting beacon signals?

An aircraft’s transponder transmits signals that announce (at the very least) the aircraft’s identity, altitude, and direction of motion (plus, for most newer aircraft, a whole slew of other useful ...
7
votes
3answers
197 views

Constellation nosewheel angle

Why are the nosewheels on the Constellation canted in a few degrees ? Is it to ensure both tyres have ground contact during tight ground turns ? I've observed that on the A320 during tight turns that ...
0
votes
2answers
344 views

What causes airliner tyres to burst as often as they do?

Tyres burst - not just fail - remarkably often. The Aviation Herald lists 26 tyre-related incidents this year. I'd expect fast landings or overweight landings and heavy braking to be implicated, but ...
1
vote
2answers
109 views

Is there any open-source flight planning system? [closed]

I am sure this is a long shot - as I have done a couple of searches on my own but came up short. Nonetheless, it does hurt to ask. I was looking for an example of a flight planning system that can ...
4
votes
3answers
324 views

Why don't solar powered aircraft use wings with more surface area

I was looking at some solar aviation projects, and I noticed they appear to follow the designs of a glider. The Helios drone above is basically a flying wing with a high aspect ratio. And the solar ...
0
votes
1answer
50 views

Pitching moment as a pure moment and its measurement with a homemade force balance

In mechanics, we learn that a force $F$ acting at a certain application point $P$ can exert a torque (also called moment of the force) about another arbitrary point $Q$ in the plane, i.e. $\tau= F \...
0
votes
1answer
146 views

May an ultralight vehicle pass directly above KEGE at 9200 MSL at 1600Z with no prior authorization without violating FAR 103.17?

May an ultralight vehicle pass directly above KEGE at 9200 MSL at 1600Z with no prior authorization without violating FAR 103.17? http://vfrmap.com/?type=vfrc&lat=39.643&lon=-106.916&zoom=...
7
votes
4answers
216 views

Are ham radio contacts allowed from inside an airplane?

This question probably lies in the middle ground between Amateur Radio.SE and Aviation.SE. I have seen a couple of videos where ham radio contacts are made with people on board a commercial aircraft ...
7
votes
5answers
412 views

Is it legal to make emergency landing on roads?

Recently I've seen many videos of planes landing on car road. Is this legal? Does this only apply to only USA or even other countries?
2
votes
1answer
70 views

Why is True Altitude calculated using the difference from the QNH to 1013hPa?

I have an example for true altitude calculation. The given Information is QNH: 983hPa, cruise in FL 85, ISA -10°C in this Alt. The math and calculations are not hard and i also get to the correct ...
9
votes
2answers
1k views

How far would a landing Airbus A380 go until it stops with no brakes?

If an Airbus A380 lands with all brakes disbled, including reverse thrust, wheel brakes and any other measures it has to stop or slow down. Then how long would it take it to reach a complete stop.
2
votes
1answer
225 views

Why isn't a human required to confirm visually that flight controls are moving?

On this A380 flight after pushback and engine start and before taxi, Capt Juergen Raps and and Sr FO Harald Tschira rely solely on their FID to check flight controls. On a regular flight without ...
6
votes
2answers
150 views

Why isn't there some optional setting that can precisely move thrust levers jointly?

In the screenshots beneath (top, bottom), Capt Juergen Raps is fidgeting the A380's 4 thrust levers with his fingers to align them to the same thrust position. Isn't it unproductive for pilots to ...
17
votes
2answers
2k views

What is the reason for setting flaps 1 on the ground at high temperatures?

Yesterday I've seen an A320 standing at the gate with flaps 1. While this question answers, why the flaps should be up, is there any reason to retract the flaps to 1 instead of up? In addition it ...
1
vote
1answer
96 views

How can pilots sleep or rest 1 hour after takeoff?

The screenshot beneath hails from YouTube. The flight obviously commenced less than an hour ago, as the A380 just attained FL250. Then at 14:28 the relief captain (Robert Juelicher) leaves the ...
3
votes
1answer
101 views

Why was the An-225 built when the VM-T Atlant already did the job?

The Soviet Buran program decided to use a carrier aircraft to move their orbiter and Energia tanks similarly to the American Shuttle Carrier Aircraft. However, the Soviet Union built two types to do ...
-5
votes
0answers
67 views
0
votes
0answers
32 views

What is a jet engine tolerance for a bird strike? [duplicate]

Similar questions have been asked ; a partial answer is in 14 CFR part 33-76, stating 16 small birds ( 85 g) must be tolerated . But what other qualification tests are there ; for medium and large ...
17
votes
3answers
4k views

Could a person damage a jet airliner - from the outside - with their bare hands?

Given just a small hammer, I'm pretty sure I could disable a large airliner with a few well-placed blows. What about with my bare hands? In other words, are there any parts of a large aeroplane that ...
1
vote
0answers
14 views

As of June 2019, can a DPE in the United States renew a CFI's certificate based on completion of a FIRC?

Flight instructors need to renew their CFI certificates every 24 months. One of the ways to do that is by completing a FIRC. In the past, you had to take your completed FIRC to the local FSDO and have ...
-1
votes
0answers
85 views

What is the visibility range of airplane lights? [closed]

In good weather (best visibility), what is the range of visibility for position lights (red, green, white lights), anti-collision lights, and the landing light(s) ?
1
vote
1answer
54 views

ASTERIX category 240 fields placement in a UDP packet

I searched the placement of ASTERIX Category 240 radar video data fields in a UDP packet. But I cannot find any useful info. Is there a standard for this work?
0
votes
1answer
77 views

Best Glide with Flaps T/O in DA20-A1

The Diamond Katana DA20-A1 Manual says that the best glide angle can be achieved with flaps in the t/o position at 72kn at maximum weight. My naive understanding would be that a flaps up position ...
1
vote
2answers
52 views

What are the Area Control Center (ACC) frequencies for Germany?

I'm looking for the frequencies of all Area Control Centers (ACC) in Germany. What are they, or where are they published?
1
vote
1answer
94 views

Why does setting the Legacy 600's transponder to standby mode also deactivate its TCAS?

In 2006, a 737 operating as Gol Transportes Aéreos Flight 1907 crashed following a collision with a Legacy 600 business jet; the Legacy's transponder proved to have been in standby mode1 at the time ...
0
votes
0answers
27 views

What is the best reliable weight/power ration achieved by a pre-1911 plane?

From the article "DAYTON BOYS EMULATE GREAT SANTOS-DUMONT" that appeared on December 18, 1903, it can be calculated that the apparatus, which took off one day before, flew 700 lb / 16 hp = 19.84 kg / ...
2
votes
2answers
151 views

Are passengers more likely to see other airliners from a window seat on the right or on the left?

From the window of an airline, one is more likely to see a plane travelling in the opposite direction, than one flying in the same direction. Are planes travelling in the opposite direction more ...
6
votes
3answers
469 views

Do ailerons on opposite wings move together?

It seems nicely symmetrical that opposite ailerons would be locked togther, so that when the left wing's ailerons move up, those on the right wing would move down, by the same amount and at the same ...
0
votes
2answers
61 views

Why does instability in pitch lower trim drag for an aircraft with a tail?

I have a hard time figuring out why a longitudinally unstable aircraft has a lower trim drag. This seems to be a thing especially in fighter aircraft, so does it have to do anything with supersonic ...
1
vote
1answer
87 views

Does aeronautical experience ever expire?

Do the hours of flying with instructor or solo ever expire? I have my 50 (yes, 50) year old pilot's Flight Log with CFI entries for 20 hours dual and 1 solo. Do I have to start over, or would some of ...
-3
votes
0answers
146 views

Is the paint scheme on this plane complete or will insignia be added? [closed]

Photo taken in KICT. What nation will this plane be delivered to? What is the name of the military arm that it will be delivered to? Will a national insignia be added, or is the paint scheme complete?...
3
votes
2answers
172 views

What is the make and model of this plane?

I came across this picture taken in the late 1920s. Could you please help identify the make and model of this plane. Thanks.
1
vote
1answer
83 views

What type of license do you need to solo a glider in the UK?

What type of license do you need to solo a glider (cross-country) in the UK? Wikipedia states that: There is no government-issued licence at present, but EASA regulations will require one by 2015. ...
2
votes
1answer
693 views

Why is there always a fire truck present before refuelling?

Whenever I fly within Europe, I notice there is always a fire truck present for refuelling before takeoff. Is this standard procedure for every flight in commercial aviation? If yes, is this a global ...
-4
votes
0answers
101 views

Could a Harrier rotor driven by a Cessna engine produce enough attain a greater than 1 thrust ratio? [closed]

Could a harrier rotor driven by a Cessna engine produce enough lift to lift a Flying saucer-type aircraft?
3
votes
2answers
75 views

What is the difference between MEL and CDL?

I know the MEL and CDL are the minimum equipment list is provided by the manufacturer, if component missing or damaged means the aircraft must pass the MEL and CDL, I need some suggestions how it was ...

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