All Questions

7
votes
3answers
205 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
373 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 ...
4
votes
3answers
336 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
56 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
149 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
226 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
446 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
73 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
288 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
159 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
101 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
107 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 ...
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
18 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
vote
1answer
56 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
81 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
59 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?
2
votes
1answer
99 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
28 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
155 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
472 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
91 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
2answers
207 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
86 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
702 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 ...
3
votes
2answers
83 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 ...
3
votes
1answer
244 views

Does the auto thrust at takeoff compensate for asymmetric engine characteristics?

When a percentage thrust has been determined for take off the auto thrust system (Airbus) or the auto throttle (Boeing) will send the data to the engines FADECs to provide the required thrust. When ...
0
votes
0answers
49 views

Where can I find a navigation database for Brisbane?

Does anyone know of a database that details the GPS locations of beacons within Brisbane; or a data-set that tells me air routes and associated en-route beacons, way points etc.? I'd like to be able ...
5
votes
1answer
331 views

Are there any safety hazards when testing the F-16's fire control radar on the ground?

What are the procedures for ground testing an aircraft's fire control radar - for the F-16 or any other aircraft - and are there safety hazards associated with exposures to humans? Most importantly, ...
6
votes
2answers
3k views

What is this airplane?

Found this old pic of an aircraft that used to service the north. Was wondering if anyone could identify, or had registration information. It would have been in service sometime between 1950-1970.
27
votes
7answers
4k views

Can the removal of a duty-free sales trolley result in a measurable reduction in emissions?

Recently, SAS announced that: Withdrawing tax-free sales will reduce the overall weight of the aircraft, which in turn will reduce fuel consumption and emissions. I could buy that this might be a ...
2
votes
1answer
92 views

When was the Speed Trim System implemented on the Boeing 737?

The Speed Trim System (STS) is a speed stability augmentation system designed to improve flight characteristics during operations with a low gross weight, aft center of gravity and high thrust when ...
1
vote
3answers
198 views

What are the effects of adding power to a 45 degree banked aircraft?

In a recent question it was proposed that adding excess power to an aircraft in a level 45 degree banked turn would cause it to pitch up into a rolling climb. This case was compared with level flight ...
1
vote
1answer
54 views

Are the pitching moment and pitching moment coefficient of an airfoil given w.r.t. the aerodynamic center?

When the magnitude and sign of the pitching moment and the value of the pitching moment coefficient are communicated, are these values given with respect to the aerodynamic center of the airfoil since ...
2
votes
3answers
146 views

QF72: How could a disconnected autopilot change the pitch?

So I was reading about flight QF72, where the A330 had incorrect sensor data. The aircraft automatically pitched the nose down twice in response to abnormally high incorrect angle of attack data, but ...
21
votes
2answers
6k views

What aircraft was used as Air Force One for the flight between Southampton and Shannon?

On Wednesday 5th June 2019, The US President flew from Southampton Airport, UK to Shannon Airport, Ireland on Air Force One. However, since SOU is more of a small regional airport, more used to ...
0
votes
2answers
180 views

Where can i find aircraft blueprints for study purpose? [closed]

I'm a 3D artist and i want to start my new project. I'm going to create an exact model of the Embraer 190 aircraft. I need this for my graduation project at the university (I chose such a project, ...
3
votes
1answer
45 views

Why do the flap maneuvering speed margins to stick shaker depend on altitude?

Why do the flap maneuvering margins to stick shaker reduce with increasing altitude? Ref: It is written in FCTM of the Boeing 737-800:
2
votes
0answers
32 views

Is there an FAA definition of what “normal flight operation” means?

Some documents talk about normal and abnormal operation. Is there a definition by FAA what normal operation is?
2
votes
1answer
134 views

Why does the thrust limit page display the thrust in percentage (« % ») and not in pound-force?

When the pilot sets the takeoff engines thrust on the Flight Management thrust limit page that displays on the CDU (or MCDU) interface, the selection will finally show as a percentage. The direct ...
20
votes
1answer
2k views

Why does the Antonov 225 needs 6 crew members?

Why does the Antonov 225 need 6 flight deck crew? What are they called and what do they do?
39
votes
10answers
11k views

Is it possible to fly backward if you have really strong headwind?

Is it possible to fly a plane backwards if you have a really really strong headwind? I mean when you are aloft, you have positive airspeed and airflow over the wings but you have negative ground speed....
2
votes
1answer
166 views

Which aircraft is this?

I was curious if someone could help me gather some more info on this aircraft. I have looked it up in the FAA.GOV site and it does not match. Is there a way to find out info on this plane that flew ...
2
votes
0answers
47 views

What failure modes did Airbus seek to eliminate or mitigate when they changed the design of the A310/A300-600's rudder travel limiter?

In the NTSB report on the crash of American Airlines Flight 587, it is mentioned (in the context of the changes between the A300-B2/B4's rudder system, on the one hand, and the A310/A300-600's rudder ...
0
votes
0answers
48 views

What proportion of the component parts of an 1967 Boeing 737 could be fitted to a model built in 2019? [duplicate]

52 years after the first one flew, Boeing 737s are still rolling off the production lines. What proportion of the parts, whether it's more interesting to measure them simply in number or by mass, ...
5
votes
1answer
135 views

Is separation provided in class F airspace?

According to the Wikipedia page on different airspace classes, separation is provided for IFR/SVFR to other IFR/SVFR in class F airspace. In ICAO Annex 11 from 2018 (p.36 in the pdf file), I can't ...

15 30 50 per page