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-   -   Does pitch attitude change with increasing AoB (https://www.pprune.org/tech-log/494235-does-pitch-attitude-change-increasing-aob.html)

QJB 30th Aug 2012 10:56

Does pitch attitude change with increasing AoB
 
I've heard there is no such thing as a stupid question in aviation, so here goes.

When established in a level turn at varying angles of bank does the pitch attitude of the aircraft (as indicated on the artificial horizon) increase. Say for example if straight and level flight is being achieved with a pitch attitude of 4 degrees, would a level turn at an angle of bank of say 45 degrees necessitate a pitch attitude of say 6 degrees?

QJB

hetfield 30th Aug 2012 10:59

If you want to maintain your altitude, yes.

td1.3 30th Aug 2012 11:26

by rolling your also rolling your lift vector, reducing its vertical component, to maintain level you must create more lift, by increasing angle of attack. so, yes

barit1 30th Aug 2012 11:29

Check out this - scroll about 1/2 down the page:
Banked turn - Wikipedia, the free encyclopedia

"During a banked turn in level flight the lift on the aircraft must support the weight of the aircraft, as well as provide the necessary component of horizontal force to cause centripetal acceleration. Consequently, the lift required in a banked turn is greater than that one required in straight, level flight and can be achieved either by increasing the angle of attack of the wing (typically by pulling on the elevator control) or by deploying flaps. "

Lightning Mate 31st Aug 2012 12:14

So Wiki thinks we can maintain level flight in a turn by deploying flaps!

In all my years of flying that really is a new one on me!!

:ugh::ugh::ugh:

Fox3WheresMyBanana 31st Aug 2012 12:31

Doesn't mention viffing!

Pugilistic Animus 31st Aug 2012 17:03

If you are very good you can bank and keep the nose right on the horizon...but you have to be smooth...:cool:

Easy Street 31st Aug 2012 20:16

In theory, I guess you can maintain altitude in a turn by deploying flaps, as you would be increasing CL by that means rather than by raising the nose. If you could develop the technique of rolling in and increasing power at exactly the same rate as the flaps deploy, you might even be able to hold constant pitch attitude and airspeed whilst remaining level! All sounds a bit tougher than simply squeezing back on the stick a bit...

Pugilistic Animus 31st Aug 2012 21:14

Tthere was a former poster named SNS3Guppy Who is extremely knowledgeable--a bit Yosemite Sam in comportment, but don't let that predjudice you..anyway one of his sveral aviations jobs was AgFlying inthat he gives some details on the many interesting uses of flaps in turns...I'd do a search under his name he had lots to offer IMHO...

here's a video of what happened to him on pprune



:}:}:}

galaxy flyer 31st Aug 2012 21:52

I don't know about the theory, but, in the planes I fly, about 1 degree increase in pitch for 45 degree banked turns.

GF

Pugilistic Animus 31st Aug 2012 21:56

Oh C'mon GF you can do better than that...:p

grounded27 1st Sep 2012 04:34

Makes me think of a function of the 727 AP as it was defined as versign (spelling). The roll computer sent the pitch computer a command in a turn. The answer is yes it does and yes it needs to.


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