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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Trim vs Speed changes
I have always been confused at the trim vs speed diagram in my ATPL courseware. To me as a pilot it intuitively makes sense, but I dont know why - hence I am here.
It shows a curve that requires trim ...
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Why is the stall speed at the forward cg faster only when the flaps is 10? (C172S)
My training aircraft is C172S NavIII.
Here is a table of the stall speed at 2550 Lbs.
Looking at this table, the stall speed at the most aft cg and the most forward cg are the same when the flap ...
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Why isn’t Equivalent Airspeed (EAS) used as the primary cockpit speed reference with modern avionics?
Traditionally, aircraft speed is presented to pilots as Indicated Airspeed (IAS) or Calibrated Airspeed (CAS), even though performance and aerodynamic limits are more directly tied to Equivalent ...
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Is there another device to measure airspeed other than a pitot tube? [duplicate]
Reading about the mechanism of a Stall Horn, I saw this diagram:
Source - How It Works: Stall Horn
and immediately I had thoughts cross my mind about Pitot-Static System Dangers(highly recommended ...
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How to read this old French speed gauge?
Vitesses au Sol is ground speed, and Vitesses Vrais is true air speed, but
what is the backward scale 450 to 750 for?
how does one read altitude?
the bendy wire looks like it's probably related to ...
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What abbreviation for knots do pilots in non-English-speaking countries use?
In aviation, we abbreviate knots as kt. According to Wikipedia:
The ISO standard symbol for the knot is kn. The same symbol is preferred by the Institute of ...
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Understanding “Your true airspeed will be the same, but your airspeed as opposed to the ground is much faster.” Bhutan Paro International Airport PBH
CNN's September 17, 2024 This airport landing is so challenging only 50 pilots are qualified to do it is about
...Bhutan’s Paro International Airport (PBH), widely considered one of the most ...
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For a modern Turboprop/Jet will going at 300/400 mph TAS at 10000 feet require more thrust/use more fuel per unit time vs going 600mph at 30,000 feet?
My understanding is one of the primary reasons why modern planes Cruise at around 30,000 to 40,000 ft is because of the lower air density less results in less drag. So for a given thrust, an airplane ...
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Why do two similar planes with the same engine have such different performance?
Why do two similar planes with the same engine have such different performance? For example, the Ikarus C42 and the Eurofox both use 912UL engines, but the Eurofox cruises 15 - 20 knots faster.
What ...
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Trimming direction on climb out and descent to maintain an airspeed
What direction do I trim in order to catch an airspeed with the control stick while on the approach in the circuit pattern? When I normally trim out the control pressures while in the region of normal ...
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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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