All Questions

What's the range that typical fly-by-wire controls (let's take A320 and B777 as examples) allow inputs in? The A320 controls in the y-axis of the side stick (forward/backward axis) the g load - what'...

There's been a bit in the media about weighing passengers in order to get more accurate take off weights for commercial planes. I'm guessing the delta between a heavy set of passengers and a light ...

Which helicopters auto rotates the best or what rotor set up is the best? Could the rotors be modified to perform better at auto rotating and maybe less at powered performance?

I have seen 2 rotor blades up to many and wonder when does having more rotor blades become less efficient? What helicopter has the most rotor blades? Related: Why don't helicopters prefer shorter ...

The 737 MAX was introduced relatively recently. I would have assumed they were replacing at least some older 737 models in operation with the major airlines that took them (eg Southwest, American, ...

Why has he bell distribution not become widely used? Is the bell distribution only ideal in inviscid flow scenarios or is there another reason for the lack of use?

Lowering gears or extending flaps comes with limitations. Given the answer of this question I suppose the limit speed for full nose down is about 325 kt. My question is: what were the limit for all ...

Let's restrict this question to best sellers airliners (A320 and B737). On this aircrafts, the THS is used for pitch trim. The speed requirements may not be has intense as for elevator as it control ...

An inflight entertainment (IFE) system has software for the computers and for the seatback displays. What DAL level is the software classified at?

I was digging around the SE region AF/D, and I was reading KSRB (Sparta, TN), and this "VOR unusable" listing is contained in it: The sectional chart shows that it is nearly on top of a hill. I've ...

The Concorde had a droop nose, which swung down during taxi, takeoff, and (especially) landing, so that the pilots could see where they were going without the long nose getting in the way. During ...

In the image, you can see the flow over a flat plate. The flow is going from right to left. I would like to know what is shown in the picture (i.e. shock wave, separation on the flow...). Just need to ...

(Inspired by this question about rudder hand control on joystick-equipped aircraft.) Most civilian fixed-wing aircraft (post-1987 Airbus airliners being the primary exceptions) use a yoke (...

What are the advantage of mahony filter over kalman filter in ruler angel( yaw,pitch,roll) estimation?

According to this pages: http://www.aerospaceweb.org/question/aerodynamics/q0231.shtml The drag coefficient of a rounded cylindrical bodies is given by this graph :http://www.aerospaceweb.org/...

The Rolls-Royce/SNECMA Olympus 593 (which powered the Concorde) used a complex intake-ramp system to improve the engine's efficiency and prevent an engine shutdown or failure during supersonic flight ...

Passengers climbing the stairs into an airliner are often subject to gusts of wind; I've had to hold onto my own scarf in the past. It doesn't seem beyond the bounds of probability that a passenger'...

Muscle wires actuators are really simple, have a high power density and are reliable. Landing gears on other hand are used only twice per flight while taking off and landing (if everything goes well ...

There are many reports online that the 737 MAX is dynamically unstable. Is this unprecedented in modern commercial aviation? References: https://spectrum.ieee.org/aerospace/aviation/how-the-boeing-...

The simple reason turbine engines are more efficient at high altitudes is because as the air becomes less dense it requires less fuel as the ratio has to remain constant. This holds true up to ...

Let's say we are flying a single prop airplane with tricycle format retractable gear, such as a Mooney Bravo or a Piper Comache. The nose gear fails mid-flight and is unable to be lowered. Is it safer ...

The Airbus planes have a feature where the GPWS can be disabled. But I cannot find any switch in the 737NG cockpit to disable the GPWS.

I've noticed that flights over Richmond (particularly arrivals) seem to have significantly reduced over the last few weeks. This is based on looking at Flightradar, as well as listening to the noise ...

Do trainee pilots learn to enter into spin and recover out of it in any basic trainer aircraft ? Does any regulation mandates this ?

Here are the background facts: This excercise has the objective to familiarise the student with the slow flight characteristics. The steps are: 1)Establish straight and level, 90% RPM, 15 units ...

Does the F-35B use its articulating rear jet nozzle for thrust vectoring?

As you many know, according to Newton's 3rd law for every action there is an equal and opposite reaction, as the main rotor of a helicopter turns in one direction, the fuselage tends to rotate in ...

What is the difference between a Non-Directional Beacon and a Compass Locator Beacon?

When an A330/40 is in alternate law1 and approaching a stall, it has a stall warning composed entirely of a cricket chirp and a voice saying "stall, stall". Most other aircraft, in contrast, have a ...

The two thick solid lines on runways at 1,000 ft from the end of the threshold are called "fixed-distance markers" in some documentation, and in others, it is called the "touchdown zone marker". Are ...

The touchdown zone of a runway can be up to 3,000 feet long if the information I have is accurate. How is the published Touchdown Zone Elevation determined? Is it the center, an average of the ...

As an example, part 91.101 skips every even number until 91.126. Why are they not in sequence as 101, 102, 103, etc?

What is an obstacle identification surface? Why would a pilot intentionally penetrate it during an ILS approach?

What equipment did the Space Shuttle orbiters carry to support navigation during reentry? Were there any differences between the individual orbiters in this regard?

The approach speed Vapp is usually given as 1.3 * Vs0, or 1.3 times the stall speed in landing configuration. Why 1.3? What created a consensus of 1.3 * Vs0 as the generally accepted textbook ...

I understand that there is cross-country flight of "a distance of at least 250 nm along airways or ATC-directed routing" requirement for the IFR rating, but I'm not sure if understand what the second ...

For example, consider the BAYPO8 departure from Tampa (KTPA). The CAMJO waypoint is the final waypoint on a rather linear route that does not contain other final waypoints. The second page of the FAA ...

Kollsman altimeters 10000ft pointer adjustment

what is the cost to reconfig a boieng 787-800 to vip? what would be the TAT? where do you take a b787-800 for vip config? how is a config vip project managed?

What would be the cost of a 3 year operational lease for two Boeing 737-800ng aircraft? Will this include the engines? question 2. What would be the cost of leasing two cfm56-3c1 engines to have the ...

According to this A330 call panel diagram, there is an option to call the nose gear bay with the MECH button. Where is the connection for this in the nose gear bay, and what would it be used for? The ...

Stall warning and protection systems on essentially all aircraft work by using several hinged vanes on the side of the fuselage (usually at least three, and preferably more), which align themselves ...

Detroit, MI is the center of Class B airspace, however a good portion of that airspace within the inverted wedding cake is in Canada. What are the mechanisms that allow US to define Class B airspace ...

I have checked Google Flights and many other online OTAs, displaying flight fares for future dates (extending upto 1 year). How are these rates decided and from where these data come? Are these rates ...

I have recently learned that I have an urgent domestic flight tonight. I am curious about whether I can carry the device with me. The device I want to carry is 33120A Arbitrary Waveform Generator. I ...

Been searching for this all over the internet for the past week or so and I still couldn’t find it so I figured perhaps someone here owns or knows where I can buy such bracelet. Thanks

I know that wind is taken into account when we compute the TAS(true airspeed) and GS(ground speed). However what is the relationship between the TAS and altitude? For example: What is the true ...

Kai Tak Airport in Hong Kong was closed to both passenger and cargo service early in the morning of 6 July 1998, with all flights moving to the brand-new airport at Chek Lap Kok. However, shortly ...

This answer asserts that "at high angle of attack the engine is producing aerodynamic lift". In the context of that answer, we are concerned about the increased torque that raises the nose of the ...

We get error 57 on my flat elevator. Can anyone help diagnose the cause? Thanks!