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The bank in a two-minute turn (rate one turn) depends on the…

  • A

    Weight.

  • B

    Wind.

  • C

    Load factor.

  • D

    TAS.

The formula to work out radius of turn is;
Radius = (TAS2 ÷ (g × tan Φ)), where Φ is the bank angle. Since this expression is independent on aircraft weight, the same speed and bank angle gives the same radius. Where g = the acceleration due to gravity, usually 9.81 m/s2. All units are in metric. Radius (m), TAS (m/s), g (m/s2).

Rewritten, the formula gives: tan Φ = (TAS2 ÷ (R × g)), so the bank angle depends on the TAS.


Note:
Rate one turn = turn with turn rate of 3°/sec = 360° in 2 min

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