Discussion
Turn rates and the time to complete a turn.
| Rate | Degrees per second | Time for 360 degrees |
|---|---|---|
| Standard rate | 3 | 2 minutes |
| Half standard rate | 1.5 | 4 minutes |
| Twice standard rate | 6 | 1 minute |
| Observed turn | 4.5 | 80 seconds |
Why is half standard rate used at high true airspeed?
Answer: D
Bank angle for a given rate of turn rises with true airspeed, so a fast aircraft would need an uncomfortably steep bank to hold 3 degrees a second. Halving the rate keeps the manoeuvre within a comfortable and controllable bank.
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