Encyclopedia : R : RO : ROT
The aviation term ROT stands for rate one turn, in which the aircraft turns by 3° per second (= 180°/minute). A rate one-half turn (1.5° per second) is normally used when flying faster than 250 kt. The term rate two turn (6° per second) is seen occasionally.
A 3° per second turn is also called a standard rate turn.
Angle of Bank formula
The formula for calculating the angle of bank for a specific True Airspeed (TAS) is:
[\tan(bank)=\frac]
where [r] is the radius of the turn and [g] is the acceleration due to gravity. For a rate one turn and velocity in kt (nautical miles per hour), this comes to
[\tan(bank)=\frac].
A convenient approximation for the bank angle in degrees is
[Angle\ of\ Bank \approx \frac + 10]
Radius of Turn formula
One might also want to calculate the radius of a Rate 1,2 or 3 turn at a specific TAS.
[Radius\ of\ turn\ in\ NM = \frac]
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