rate 1 turns
Guest
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How many people have a direct readout of TAS in the cockpit ?
The angle of bank AOB for a standard rate turn is given by: AOB = 57.3*atan(v/362.1)
Take your pick of the techniques below, but when flying in the crud I used IAS/10+7, IAS in knots. i.e 160 knots indicated = 23 degrees seems to work well.
[list=1][*]V |AOB |V/10+7|V/10+5|V/7[*]80 |12.46|15|13|11.43[*]90 |13.96|16|14|12.86[*]100|15.44|17|15|14.29[*]110|16.90|18|16|15.71[*]120|18.34|19|17|17.14[*]130|19.75|20|18|18.57[*]140|21.14|21|19|20.00[*]150|22.50|22|20|21.43[*]160|23.84|23|21 |22.86[*]170|25.15|24|22|24.29[*]180|26.43|25|23|25.71[*]190|27.69|26|24|27.14[*]200|28.92|27|25|28.57[*]210|30.11|28|26|30.00[*]220|31.28|29|27|31.43[*]230|32.43|30|28|32.86[*]240 |33.54|31|29|34.29[*]250|34.62|32|30|35.71[/list=a]
The angle of bank AOB for a standard rate turn is given by: AOB = 57.3*atan(v/362.1)
Take your pick of the techniques below, but when flying in the crud I used IAS/10+7, IAS in knots. i.e 160 knots indicated = 23 degrees seems to work well.
[list=1][*]V |AOB |V/10+7|V/10+5|V/7[*]80 |12.46|15|13|11.43[*]90 |13.96|16|14|12.86[*]100|15.44|17|15|14.29[*]110|16.90|18|16|15.71[*]120|18.34|19|17|17.14[*]130|19.75|20|18|18.57[*]140|21.14|21|19|20.00[*]150|22.50|22|20|21.43[*]160|23.84|23|21 |22.86[*]170|25.15|24|22|24.29[*]180|26.43|25|23|25.71[*]190|27.69|26|24|27.14[*]200|28.92|27|25|28.57[*]210|30.11|28|26|30.00[*]220|31.28|29|27|31.43[*]230|32.43|30|28|32.86[*]240 |33.54|31|29|34.29[*]250|34.62|32|30|35.71[/list=a]
Guest
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Before everyone plugs Zeke's formula into their various flight calculators, be aware that his formula assumes the calculator returns the function atan()in radians (there are PI radians in 180 degrees). The formula is fine for Excel.
If your calculator works in degrees, drop the 57.3 bit.
If you want to impress your friends, you can generalise Zeke's formula for any turn rate N by simply adding it:
AoB = 57.3 * atan(V * N / 362.1)
ET
If your calculator works in degrees, drop the 57.3 bit.
If you want to impress your friends, you can generalise Zeke's formula for any turn rate N by simply adding it:
AoB = 57.3 * atan(V * N / 362.1)
ET