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FBOZH
22nd Jan 2004, 03:17
I would like to check on the relationship between IAS/AOB; is it (IAS/10) + 5 = AOB for a rate 1 turn with knots and the same with 7 instead of 5 when using MPH? Or is it the other way around? Thanks for anybody's help.

andyb79
22nd Jan 2004, 05:25
quite sure it's
IAS(knots)/10+half the answer = AOB
dont know about MPH although adding 1 third instead of half seems to give a good approximate answer

FBOZH
22nd Jan 2004, 05:41
Thanks for that. I had never heard of that "+ half answer" business, it seems like a good way of looking at it.

FBOZH

exeng
22nd Jan 2004, 06:05
A good rule of thumb is 10% of KTAS plus 7.

See this site: Rate of turn (http://142.26.194.131/aerodynamics1/Lift/Page14.html)


Regards
Exeng

Field In Sight
22nd Jan 2004, 18:15
It's 10% of airspeed

Plus 7 for knots.

Plus 5 for mph.

For example 100mph is slower than 100kts and therefore the aircraft will require less bank and hence a smaller number must be added.

FIS.