Federico
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  • Member for 7 years, 10 months
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What are the effects of placing the vertical stabilizer at the front of the aircraft?
3 votes

Would it even work properly? Depends on your definition of "properly". Would it steer the aircraft like a tail one would? In principle yes. Would it be as easy to use as a tail one? Not by ...

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What does this formulation mean?
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20 votes

What does mean "fl oz"? "fl oz" means fluid ounce (1 fl oz ≈ 30 ml), which is a unit of volume, as opposed to dry ounce, which is a unit of mass. How are they calculated the 30:1 ...

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Can I derive the wind speed and direction?
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10 votes

No, you need the True AirSpeed (TAS). The Indicated AirSpeed is not a realiable measure of it, since it is not even calibrated against the instrument mounting position and is not intended to measure ...

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What does gravity compensation do in flight control?
1 votes

That term is a feedforward. It simply makes sure that during a turn the rudder will anticipate the need for that $r$ component and thus helps making the turn coordinated. Since the term is complete (i....

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What amount of electricity could we get from the Seebeck effect on a kerosene turbofan?
2 votes

The context is that commercial airplanes make up most of the traffic. Let's take the A320 as an example of commercial airplane. http://a320dp.com/A320_DP/electrical/sys-3.7.1.html The main AC ...

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What's the function of the plate behind the wheels of the Pilatus Porter?
27 votes

Looks like a sort of gravel kit. Real gravel kits are used by jet powered aircraft to land on rough airfields. In this case though, the engine is in front, so it is likely that it is only there to ...

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Who owns B- registration? China or Taiwan?
4 votes

From your second link: Aircraft registered in the People’s Republic of China traditionally have had "B-" followed by four digits. B-0000 to B-9999 Since 2018, the following registration ...

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How much is an airliner's drag coefficient?
1 votes

Is Cd measured at zero lift AoA or when the plane is flying in a straight line? Both. $C_D$ is a function, not a number. The "numbers" are the partial derivatives: $C_{D_\alpha}$ measures ...

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Bernoulli Principle -- Reversed
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4 votes

As said on Wikipedia, the principle says: $$\frac{v^2}{2} + gz + \frac{p}{\rho} = \text{constant}$$ i.e., assuming no changes in the gravity potential energy or density: an increase in velocity comes ...

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Why can't we use bleed air instead of oxygen cylinders?
2 votes

why can't we use bleed air instead of oxygen cylinders? Because if the cabin is depressurised, bleed air has already failed, and the oxigen tanks are there to provide a temporary help while the ...

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Why can't you have sail-powered airplanes?
2 votes

Sail-powered vehicles cannot be faster than the wind they travel in (along the wind direction) and need another medium (ground or water) that offers resistance. An airplane, to be in flight, needs to ...

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Can thrust be produced only using the forward speed of a nozzle?
2 votes

It does not work for a couple of reasons. friction on the surfaces creates extra drag a diffuser will lower the pressure, and you're not adding energy to the stream. As a consequence the air going ...

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How does change in aircraft's weight equal fuel mass flow rate multiplied by 'g'?
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3 votes

In the SI system the weight is measured in Newtons [N = kg*m/s^2], while the mass is measured in kilograms [kg]. To convert kilograms in Newtons, i.e. a mass measurement in a weight, you multiply by ...

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Take off with 0 kt ground speed
1 votes

If there is enough headwind, yes, as that's the only thing that matters, groundspeed is of no relevance. If you're asking about the treadmill, see here.

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Is it possible to Fly Aircraft on Mars?
7 votes

you're in luck, somebody did the calculation/ simulation. Mars: To see what happens to aircraft on Mars, we turn to X-Plane. X-Plane is the most advanced flight simulator in the world. The product ...

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What is currently the longest commercial flight in terms of distance?
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17 votes

According to Wikipedia, the flight you are referring to, SQ21, got discontinued in November 2013. The runner up, still from Singapore Airlines, SQ37, got discontinued one month earlier. The same page ...

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Do jet fighters have air conditioning systems?
14 votes

From second-hand experience (I can say I am really close with a Tornado pilot), the Tornado has a compressor stage airbleed that directs some cold air directly in the cockpit. He would describe it as ...

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What is the direction of the sideslip induced by roll on a conventional aircraft?
2 votes

First, a clarification. The standard reference frame for and aircraft, w.r.t. a person sitting in the pilot seat, is: x axis positive ahead of the aircraft y axis positive in the right wing direction ...

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Is it possible to hack an airplane while it's moving (in general)?
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11 votes

The answer to Is it possible to hack an airplane while it's moving? is "theoretically yes, movement has no effect on a plane hackability". How can someone "touch" a moving airplane, have the ...

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Is it safe to fly with a B737-800? Is it different from a B737 Max 8?
4 votes

All B737 Max, as of today 19-Sept-2019, are still grounded and will be for the foreseeable future. So if you are flying in an aircraft, you are guaranteed that it will not be one of those. As for the ...

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

Why there so many pitch control surfaces on the Piaggio P180 Avanti? You mark 3 surfaces, but only one is movable, i.e. there is only one pitch control surface on the P180, not "so many". what is ...

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How to calculate on ground aircraft yaw rate knowing the longitudinal speed and inferred yaw angle
1 votes

Do I have enough information to calculate it? No. Yaw rate is $rad/s$. You have an angle, $rad$ (or degrees), and you have a linear speed, in $m/s$. You cannot obtain a $rad/s$ value from these two ...

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Why don't short runways use ramps for takeoff?
50 votes

Because then you can only land in one direction. What do you do if the wind blows exactly along the runway so that departing and landing planes have only tailwind then? You would waste a precious ...

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How is the camera positioned for these plane-to-plane Schlieren images of shock waves?
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8 votes

Where is the camera relative to these target aircraft, and what's behind them? Straight from NASA themselves: NASA flew a B-200, outfitted with an updated imaging system, at around 30,000 feet ...

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What are the main differences piloting Boeing vs. Airbus aircraft?
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50 votes

On a pilot-vs-FBW system perspective, as mentioned in the comments to the question, the most notable difference is the authority priority: Boeing trusts more the pilots: they can supersede the Fly-by-...

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Do commercial aeroplanes use ABS to brake?
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42 votes

Yes, they do. They are called Anti-Skid and they go from Mark I of 1948, with simply an on-off switch triggered by wheel lock, till Mark V (or at least that's the last I've seen), with quite complex ...

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Are cabin dividers used to "hide" the flex of the airplane?
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26 votes

Was my fellow passenger right? No. That photo is taken in a B777-300 (2 aisles, 4 seats in the centre and three at the sides, lavatories only behind the central rows, rows on the left side of the ...

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Can aircraft other than rockets go to space?
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26 votes

Depends on what you mean. Get to high altitude? Yes you can. It is really inefficient to get there, but some aircraft already do it. Achieve a stable orbit and be able to maintain control? No, at ...

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Is there a conventional notation or name for the slip angle?
7 votes

There is only one other such angle. It is indeed the sideslip one, and its standard greek letter is $\beta$ (beta)

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What's the formula to calculate static air temperature?
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0 votes

is there any other formular/way to calculate static air temperature using only mach/tas/altitude ? No. Mach (or TAS) can only give you the ratio between total and static air temperature, as seen ...

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