Questions tagged [airspeed]
The speed of an aircraft relative to the air. Among the common conventions for qualifying airspeed are: indicated airspeed ("IAS"), calibrated airspeed ("CAS"), true airspeed ("TAS"), equivalent airspeed ("EAS") and density airspeed.
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How can I control my airspeed using throttle to command?
I am developing code for a fixed-wing aircraft in ArduPilot to control desired airspeed and vertical speed through attitude commands (roll, pitch, yaw, and thrust) in simulation.
I understand the ...
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How do planes deal with excess lift at high speeds?
If I understand correctly, wind force increases quadratically as airspeed increases. Therefore, all other things being equal, lift should also increase quadratically. Does that mean, a plane going ...
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When ATC tells you to climb or descent now, do the speed restrictions on SIDs and STARs still apply? (EASA)
I am flying the ELSUP 1H departure. After taking off, I get told to climb to FL100. Do I have to comply with the speed restrictions? Is it the same for a STAR?
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What if the onboard airspeed sensors fail? [closed]
I've a simple question regarding the rare case of the failure of all airspeed indicators (ASI) including the co-pilots's indicator. Say the airspeed indicators were to fail during rotation, what would ...
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optimal loiter speed for an eVTOL air taxi
I'm not looking for a precise answer here, just a ballpark estimate of the optimal loiter speed for any model of eVTOL air taxi aircraft. In other words, if you just want to delay (kill time) in the ...
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Comparing a Flight In Turbulent Conditions At Va And Vb
First, let's cover definitions for both airspeeds:
Turbulence penetration airspeed (Vb) is the design speed for maximum gust intensity (i.e. the intersection between the 66 fps gust line and the ...
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Do departure procedure speed restrictions override airspace speed restrictions?
This is a speed restriction found on the BNGOS 3 RNAV Departure Procedure out of KOPF:
SPEED: ACCELERATE TO 250 KT, IF UNABLE, ADVISE ATC
Opa Locka airport is Class D and is also below the Miami ...
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Minimum sink speed and maximum endurance speed
For a given airplane, are the minimum sink speed and maximum endurance speed the same?
Thankyou
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Why is calibrated airspeed (CAS) greater than indicated airspeed (IAS) at lower airspeeds?
As can be seen in the correction chart, the difference between the IAS and CAS is greater at lower indicated airspeeds, however when the IAS increases, the difference is minimal.
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Is this flight GPS data intentionally manipulated?
Some flat Earth guy is trying to convince me that flight data is manipulated with and that planes travel faster in the Southern Hemisphere.
Now this is obviously not true, in the video speeds of over ...
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Thrust needed to overcome parasite drag that increases with speed
Can anyone explain this passage from page 11-5 of the PHAK: “ For example, if an aircraft in a steady flight condition at 100 knots is then accelerated to 200 knots, the parasite drag becomes four ...
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Why does aircraft weight influence position (installation) error in pitot-static systems?
I am a private pilot from Argentina studying to become a commercial pilot. In one of the books I was given to study, published by the Chilean air force, the there's a claim (in Spanish, page 36) that ...
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What is the mathematical relationship between mass and speed for constant thrust in level fight?
Imagine that we have a wing with constant thrust in level flight. Then imagine that we add mass to that wing. In order to maintain level flight, I would expect that the angle of attack would need to ...
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Why do I keep getting different results to an aircraft's turn radius when I plug variables into different calculators and solve on my own?
I'm trying to solve for an aircraft's turn radius at mach 3.17 (2432 mph) and a bank angle of 19.8; however, after using various online calculators and personally solving the equation, I keep getting ...
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Why does Vx increase with altitude and Vy decrease?
As an airplane climbs, the best angle of climb airspeed (Vx) increases and the best rate of climb airspeed (Vy) decreases.
I can't figure it out, why does it happen?
I Hope someone explains it to me
I ...
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