Questions tagged [performance-calculation]
Questions about calculating the various measures of performance of an aircraft.
170 questions
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EASA Performance Class B Takeoff - defactoring
I'm trying to find a reason for a 1.15 defactoring when it appears that the 1.3 factor on ASDA must always be more limiting.
Referencing this:
CAT.POL.A.305 Take-off
...
(b) The unfactored take-off ...
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Is there a name for the airspeed at which lift generated is equal to airplane weight?
Is there a name for the airspeed at which the wings(at a 0 degree AOA) of an airplane start to generate enough lift to lift the aircraft up to its own weight(balanced)?
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How to determine the maximum speed of an aircraft with a given engine? [closed]
If I have a jet engine producing say 650N of thrust, could that engine in the right airframe fly at Mach 2 or Mach 1?
What, apart from the airframe limitations, determines the maximum speed it will ...
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MSL vs Pressure Alt mix up
I am a Military Helicopter pilot.
I’ve been inputting MSL instead of Pressure altitudes of LZs into my performance charts for Power available calculations. The Pressure altitude is not always ...
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What is the relation between k-factor and suction force?
Hello Aviation community!
I am currently in the (lift-dependent) induced drag calculation of my aircraft design lecture where I came upon this slide:
As the title suggests, I am not sure exactly ...
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How does air temperature impact cruise range and performance?
[1966 Cessna 172G Cruise chart]
In the shown Cruise performance chart it states that it is standard conditions. If a normal lapse rate at 7,500 ft is 0 celsius how would I see accurate values if my ...
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Why take-off N1 decreases in the FMC when we switch on the PACKs?
I know that I have asked similar question recently, but I still don't have a good answer. I noticed that (on a 737 NG/MAX) when we switch on PACKs during Before Taxi Procedure or for the APU, the take-...
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How does engine bleed impact N1 and EGT
Could somebody explain impact of bleed air extract from engines on take-off N1 and EGT? As far as I know (considering 737NG) using engine bleed air decreases calculated N1 for take-off by the FMC, ...
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What determines the shape of a CG chart?
Assuming everything in the aircraft is a non consumable and does not move during the flight, is the cg shape dependent on the fuel storage? I understand the cg has limits, but what determines the ...
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STABILIZER fault Boeing Landing performance
When calculating the landing distance the QRH says the approach is flown at VREF30 + 20.
As well as the landing must be conducted with Flaps 20.
The performance tables say to add 200 ft per 5 kts ...
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Why is TALPA not used for take off? Why is it used for landing?
TALPA - Takeoff and Landing Performance Assessment has been introduced. What is it exactly and why is it not used for take-off, when it is stated in the name TALPA?
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can aircraft cruise speed be less than corner speed? my r-c PROPELLER plane calculations are saying cruise speed is less than corner speed.(Long read) [closed]
I have designed an aircraft and wanted to determine its performance charachteristics.
the following parameters have been utilised:
aircraft specifications:
Mtow = 1.7kg
wing_area = 0.411 m^2
Cl_max = ...
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662
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Can this plane make it to an airport after dual engine failure?
If you are flying to the most remote airport(according to simple flying most remote airport is Mataveri International Airport), while flying on a typical airliner with normal weather, in the event of ...
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Determining Required Fuel from Payload/Range Diagram
I would like to determine the amount of fuel required for a flight at a given range/payload combination - ideally from the payload/range-diagram [1] of the corresponding aircraft alone.
I know that ...
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Why is higher V1 preferred over lower V1 in takeoff performance calculations?
I am using a takeoff performance application that seems to prioritize a higher V1 speed whenever there is extra runway available. It does this as long as the Acceleration-Stop Distance (ASD) remains ...
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