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Summary ATPL Theory - Principles of Flight

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This document are some notes i made for the ATPL subject Principles of Flight. It is not a complete summary but just some information i found important during the lessons. I made the notes for my ATPL theory, i passed all 13 subjects with an average of 93%.

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  • November 30, 2023
  • 7
  • 2022/2023
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PRINCIPLES OF FLIGHT
Notes

, Principles of Flight - Formules
Flight mechanics
Ezelsbruggetje SIN/TAN/COS

-Cl (coefficient), Cosinus = For LIFT

-Ts (Thrust), Sinus = for THRUST

-Rt (RadioTelephony) = Tangens = for turn RADIUS



!De 3 belangrijkste formules!

-L= W x cos γ (:=climb, x=descent)

-T= D + W sin γ (+=climb, -=descent)

-R= (TAS2 : (g x tan Φ)) (Let op: TAS = m/s)



For increase in lift during a turn

-1 : cos bankangle = loadfactor. For example: 1 : cos 60 = 2 . So the lift is doubled.



Climb gradient

-Climb gradient = Tan γ x 100% (100 m horizontally -> ….. m vertically)



γ = Climb angle

Φ = Bank
angle
Overig
-Vsnew/Vsold = √(𝐶𝐿𝑜𝑙𝑑/𝐶𝐿𝑛𝑒𝑤)

-Mach = TAS/LSS (Local speed of sound) → LSS = 38,95 x √𝑂𝐴𝑇
- Lift = CL½ ρV 2 S

- Drag = Cd½ ρV 2 S

-Increase in stall speed in turn = 1 ÷ √𝑐𝑜𝑠 𝜙

-New stall speed = Vstall x √n
…𝑘𝑡 𝑥
-1 kt → 1,852 = 0,514 m/s
m/s =
3,6


-Kelvin = Celcius + 273,15



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