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2 Answers

Standard Rate Turn

Asked by: 1676 views Aircraft Systems, Aviation Headsets

If airspeed and bank determine the rate of turn, won't using the bank indicated by a 2 min. standard rate turn coordinator dictate a specific air speed for every aircraft?

 

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2 Answers

  1. Best Answer


    Russ Roslewski on Mar 17, 2020

    I’m not exactly sure what you mean, but I’ll try.

    The turn coordinator, although it shows a banking airplane, the bank angle it shows DOES NOT reflect the actual bank angle of the airplane. It shows the rate of turn, not the bank angle. You can try this yourself – in a 172, for example, fly at normal cruise speed, say 115 knots, and bank to standard rate on the turn coordinator. Now look at the AI, you should see about 17 degrees of bank. Now slow the plane down to maybe 70 knots and again make a standard rate turn on the turn coordinator. The AI should now show about 10-11 degrees of bank.

    The bank required for a standard rate turn is only dependent on airspeed. So a 172 going 115 knots will be at 17 degrees of bank, so will a DC-3 at 115 knots or anything else that can fly that speed.

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  2. Peter on Mar 17, 2020

    Yes! You answered my question perfectly. THANKS!

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