0
votes
0answers
3 views

How can flying high minimize drag and provide a fuel efficiency?

as the plane go high, it means the engines have to work harder to compensate for the air density, therefore it will require more fuel in order provide the same power at lower altitudes. but, I always ...
-5
votes
1answer
30 views

Need Airbus A380 model in .xml format

i am looking for Airbus A380 aircraft model in xml language/ format. Can anyone provide? Or share the xml code?
1
vote
1answer
40 views

Time to VOR / Aircraft Speed

I'm trying to figure out the calculation to these questions: "A pilot tracking a VOR turns 90 degrees from current heading. The pilot notes that it takes 3.0 minutes for the plane to intercept the ...
0
votes
1answer
39 views

Which airfoil would be optimum for a glider?

The glider I am designing has a mission requirement to fly for as much time as possible. It will fly in the low Re range of about 150,000 to 250,000. While comparing different airfoils I am looking ...
0
votes
0answers
15 views

Does Froude Efficiency represent an upper bound for propellers in certain flight / aircraft conditions?

I used the Simple Propeller Theory to calculate the Froude Efficiency for my theoretical propeller-driven craft (at 65k feet). Here are the results: https://ibb.co/kPPqzU. My results were that, for ...
2
votes
2answers
110 views

What measures prevent a military aircraft's weapons from being fired on the ground?

Recently the 20mm cannon of an F-16 was accidentally fired on the ground by maintenance personnel at Florennes Air Base in Belgium, resulting the the destruction of another F-16 and damage to a third. ...
1
vote
2answers
96 views

What is this small black rubber strip protruding out of the flap track fairing of the A320?

On the Airbus A320 wing there in whilst in flight a small black rubber strip protruding out of the flap track fairing. What is it please?
0
votes
0answers
42 views

Which airline pays for a missed connection due to a delay etc.? Airline booking systems [migrated]

Often flights get delayed and connections are missed & passengers need to be rebooked. Sometimes hotels or meals are involved. How do airline systems deal with who pays for the rebooking? e.g. I ...
-3
votes
0answers
48 views

can you tell me about this [on hold]

can you tell me about Angled Nose in Parking Angled Nose Out Parking Parking Parallel Nose in Parking
-2
votes
0answers
60 views

B737 nose landing gear compartment noise during taxi [on hold]

There is a noise in the landing gear compartment during taxiing. This has happened many times. The noise disappeared after replacing the wheels. A few months later the noise came up again.
0
votes
3answers
92 views

Are there different symbols or graphics to identify different types of GA fuels?

Are there different symbols to identify the different types of fuels used for general aviation aircraft?
2
votes
1answer
74 views

With wind, what will a perfectly circular flight path relative to the surrounding air look like from the ground?

Let's suppose that an airplane flying at a uniform airspeed follows a perfect, level, closed circular trajectory with respect to the mass of air. Now, seen from the ground, and in the presence of a ...
1
vote
2answers
56 views

Headwind Component when transitioning from a Crab to Slip on final?

I don't know if I'm over thinking this, but it has been causing a bit of confusion in my head. Knowing that headwind component effects the angle of climb/decent, I was wondering how it affects ...
0
votes
1answer
64 views

Is a Sun driven balloon/parachute possible this way?

Is it possible to make a helium balloon with a clear side to create lift from the heat from the Sun entering a transparent side like a hybrid hot air/helium blimp? How would the direction of the ...
0
votes
0answers
43 views

How do I determine the engine thrust required to give a specific climb rate?

New pilot here and I am playing around with a flight simulator game for the B737-800. I need some help understanding where/how one can find out if one has enough engine thrust (%N1) to meet a required ...
0
votes
3answers
121 views

How can pilots minimize parasite drag?

What can pilots do to minimize parasite drag? As far as I know the effect of parasite drag really depends on the manufacturer of the airplane, but can pilots do anything about it?
1
vote
1answer
100 views

Is it possible to totally override the flight computer on the Airbus A320-family (in simple non-technical terms)?

As I know, in the autopilot oriented airplanes like an A321 the plane doesn't let the pilots pitch down when the plane gets an over-speed warning. So what if the pitot-static system isn't working ...
0
votes
0answers
29 views

Is winglet height equivalent to duct height?

Winglets increase effective wingspan by causing vorticies to be generated further away from the wing root in proportion to the height of the winglet (if vertical), likewise with winglets on propellers....
1
vote
1answer
53 views

Can a DPE do a checkride in any plane of the same class?

Do DPEs have to be certified in a specific aircraft type, or can they do a checkride in any airplane of the same class? For example, if I have done all my training in a Cirrus SR22 and want to do my ...
5
votes
1answer
111 views

Has fuel boiling ever been an issue for high altitude aircraft?

Are special measures being taken to prevent fuel from boiling inside the fuel systems at high altitudes? If so, when (with what aircraft) did this practice start? (question is pertaining to air-...
0
votes
0answers
36 views

What is the drag (or $C_D$ vs $C_L$) of the Airbus A320 in cruise flight?

Is there any website or data-sheet that I can find drag of airplane for cruise conditions. $C_D$ vs $C_L$ graph is also acceptable. To be more specific I am searching drag values of A320 in cruise ...
3
votes
2answers
203 views

'Gravitational' power vs. engine power

A glider gets the power it needs to fly from the decrease of gravitational potential energy associated to the descent. My question is: for the same weight $W$, airspeed $V$, and a prop efficiency of ...
1
vote
4answers
319 views

How about inventing a “fuel” that will not erupt into fire?

One of the most concerning factor in flight safety is the possibility of the plane erupting into fire due to a fuel spill and a spark. Is it possible---or have researchers ever worked on---to power an ...
18
votes
6answers
3k views

Is there a tank priority sequence for using the fuel tanks?

Is there a tank priority sequence for using the fuel tanks, or does the pilot decide?
1
vote
2answers
104 views

What does the letter “D” next to the VOR frequency and name mean?

In most charts there is the letter D next to the VOR freq. What does this mean? I assume the H and L in brackets in other charts mean high and low VORs (correct me if im wrong). But what does the D ...
0
votes
2answers
157 views

What would happen if the elevators were set to opposite angles?

For example left elevator angle = +30 deg, right elevator angle = -30 deg. Would these settings be able to induce a rolling moment on the aircraft? What would happen with the pitch?
1
vote
1answer
81 views

What was the first aircraft designed with a plug-system fuselage, and why?

Nearly all modern transport aircraft are designed with a plug-system fuselage, allowing longer and shorter variants to be built by adding or removing plugs. In addition, the plug system simplifies ...
-1
votes
1answer
120 views

How was a looping possible with an Alaska Airlines plane? [duplicate]

Someone has stolen an empty airplane from Seattle Airport and crashed it down after performing some loopings. I am wondering how this was possible. (Source)
0
votes
1answer
63 views

Why do I see moisture coming from the middle of the wing as well as wingtip vortices? [duplicate]

A lot of times I see small tube like streams of visible moisture training from the middle of an airliners wing. I assume this is induced drag created by wingtip vortices, when the aircraft is heavy, ...
7
votes
1answer
150 views

Why did the Daimler-Benz DB 605 compression ratio vary between cylinder banks?

The Daimler-Benz DB 605 was an inverted V12. The compression ratio of the 2 banks varied slightly. Why did the designers do this? Compression ratio: 1:7.3 right bank, 1:7.5 left bank (museomotori....
1
vote
1answer
89 views

Are there any airports that require arriving/departing flights to fly under an obstruction?

Are there any airports with approaches and/or departures that require pilots to fly under an obstruction at some point (thus meaning that, for at least a short segment of the approach or departure, ...
0
votes
1answer
39 views

How does the line of thrust affect longitudinal stability?

I’ve been studying Pilots Handbook of Aeronautical Knowledge FAA-H-8083-25B and on p 5-17 they talk about thrust line and stability. Can someone explain why the moment changes when thrust is applied? ...
9
votes
2answers
2k views

Cessna 182 with canards?

I want to see if anyone knows what the heck is going on here. I was doing a flight out in Palo Alto California recently, and during the run up this Cessna 182 pulled in next to us. It appears to ...
0
votes
0answers
25 views

Where can I find exhaustive and current list of ARTCC frequencies?

I found was http://www.milradiocomms.com/artcc_frequencies.html which refers to "update file which resides on the FAA's server". How do I obtain location of this FAA file?
1
vote
1answer
79 views

What is the purpose of this span wise “false spar” on Affordaplane wings?

This is the wing of an Affordaplane Ultralight,what is the use of those spanwise foam boards between the foam ribs,I know it's not for aesthetics.
0
votes
2answers
127 views

What is the tallest tower (AGL) identified on a sectional chart within the Class-E-to-surface airspace surrounding an airport in the US?

What is the tallest tower (in terms of AGL) identified on a sectional chart within the Class-E-to-surface airspace surrounding an airport in the US? For the purpose of the question, "within the Class-...
-2
votes
0answers
42 views

Aircraft maintenance [on hold]

I'm Javad,I have one question,Please tell me that How can I be a aircraft maintenance,What's difference between EASA licence and certificate of passed EASA module.
1
vote
2answers
92 views

Instrument Currency [on hold]

Could anyone help me out with this type of scenario? I just want to make sure I have a solid understanding. What if I did not complete my 1 instrument approach and hold in May? Does this mean I have ...
-2
votes
2answers
356 views

What components on a fully functional A-380 could fail in mid flight while still allowing the plane to land without loss of life? [on hold]

I'm doing some research for a potential fan story in the Dresdenverse. Summary: a passenger is flying for the first time in an A-380. The A-380 is fully functional: it's the first flight after a ...
1
vote
2answers
110 views

How does the throttle position affect the speed of airflow to the engine?

It is said that the less we open the throttle the slower is the speed in Venturi tube, thus less reduction in pressure and less fuel is being sucked from float chamber, however, actually if we reduce ...
1
vote
0answers
78 views

Cargo truck sequence in JFK [on hold]

When I plan the loading instruction for flights from JFK airport I always get a truck sequence how cargo is loaded on the truck and they ask if we can load it the same way onto the airplane. I never ...
0
votes
0answers
28 views

Examples of NAA (national aviation authority) [on hold]

Could we say that FAA, EASA and LBA are examples of National aviation authorities?
3
votes
1answer
165 views

What is the source for the “rule” forbidding configuration changes below 200ft AGL?

I keep hearing from countless instructors, and even some DPE's, that in single engine aircraft, no configuration changes are allowed below 200AGL (i.e. flaps). Some have also stated that this is ...
2
votes
2answers
94 views

Is there an additive that can lower the freezing point of jet fuel?

Does an additive exist to decrease the freezing point of jet fuel? I have found an additive that decrease the freezing point generated by drops of water (appears between 0 and -10°C), but I'm needing ...
0
votes
0answers
158 views

What is the heaviest payload ever carried by a single main rotor helicopter?

What is the most heavy payload ever carried by a single main rotor Helicopter?
-1
votes
3answers
124 views

Do cellphones have the technology to measure altitude through an App [on hold]

Do cellphones have the technology to measure altitude through an App as they do speed and GPS.
0
votes
0answers
18 views

Reason for trailing edge boudary layer separation at transonic speed on subsonic airfoil

Prior to the shock stall, the shock induced boundary layer separation can be classified mainly into 2 types illustrated in Fig 1 (I couldn't get better resolution). Model A illustrates a bubble ...
6
votes
2answers
2k views

Why do airplanes have complex air conditioning systems?

I'm wondering why do planes have complex air conditioning systems with several coolers, compressors and turbines. If these devices are powered by bleed air from the engines, why isn't the bleed air ...
1
vote
4answers
128 views

Who else is using electro-thermal wing anti-/de-icing apart from the 787?

I am researching into deicing technologies for the future, but apart from Boeing with Ultra/GKN, no one seems to be picking this technology up and being competitive. Any one know why this is? Is it an ...
2
votes
1answer
169 views

Why wasn't Saint-Exupéry able to cover more distance before his 1935 desert crash?

Is there any source that provides more details on Saint-Exupéry's desert crash in 1935 than Wikipedia does: On 30 December 1935, at 2:45 a.m., after 19 hours and 44 minutes in the air, Saint-...

15 30 50 per page