Vert Turn Radiuses

[Ardy123]

We have a tool that that will generate flat turn radii but do we have a tool that will for a particular speed give you the vert turn radius? Also, if maybe one could dial in a direction vector and an up vector, (or a quaternion), and it would calculate the turn radius for that position given a speed. Does such tool exist?

Thanks
Ardy

[hitech]

Whats a vert turn?

If you are turning in anything but a horizontal plane or spiral, radius does not make a lot of sense because the radius is constantly varying do to speed changes.


HiTech

[Ardy123]

a Vert turn, is a turn in the vertical plane. Yes I understand that your speed changes, but given an initial starting  speed. The reason I ask is because I have noticed that different airplanes have drastically different 'vert turn' shapes, ie some are very round while others are much more egged shaped. Where I'm going with this is, given plane A and plane B where plane B has a worse turn radius, and plane A is turning more or less in the horizontal plain, what is the necessary vertical offset so that plane B can 'cut' the turn by using a more 'vertical' turn.

I have done it in the MA many times by rolling 45 degrees, pulling up,then rolling again 45 degrees and pulling down (a yo-yo like move) but I was interested in knowing the 'exact' 'best' angle as supposed to just what's 'good enough'. It could also be used as a good tool to teach how to use the vertical aspect of flight to newer pilots.

[Dawger]

The math is the same for instantaneous turn radius. Direction doesn't really matter.

Radius is directly related to speed and G force. Since those two variables vary greatly throughout any sustained maneuver the sustained radius becomes a more difficult math problem.

[Ardy123]

The math is the same for instantaneous turn radius. Direction doesn't really matter.

But gravity plays a huge part, and can 'tighten' a turn at the top.

[Dawger]

Gravity is part of the G-force used in the calculation. Doesn't change the math

[Ardy123]

Gravity is part of the G-force used in the calculation. Doesn't change the math

explain, g force is how many times gravity you are pulling, when you go up and roll using gravity to pull you back down, you aren't pulling many gs at all, its more that gravity is pulling you back down so your turn radius is much tighter.

[Baumer]

Here Ardy this will explain what you want.

[Dawger]

explain, g force is how many times gravity you are pulling, when you go up and roll using gravity to pull you back down, you aren't pulling many gs at all, its more that gravity is pulling you back down so your turn radius is much tighter.

The one force of gravity is always present. In a perfectly horizontal turn it is not a factor because the radius is perpendicular to the force of gravity. In anything other than a purely horizontal turn the force of gravity must be accounted for.

The pilot always feels the 1 G force. The G meter always reads 1 when the aircraft is sitting still. The one G is always there. It effects the radius of every turn except the purely horizontal turns (which are almost impossible in combat). The always present one gravity force makes every turn bigger or smaller than it would otherwise be.

[shreck]

There is such a thing as----------> OUTSIDE!   

   Ardy     

[Ardy123]

lol... stuck at work now

[FiLtH]

Pages 215 and 217 is a good example of why I could never be a pilot.  I know ROFL and LOL, but V2/r-cos etc is beyond me.

[Vinkman]

We have a tool that that will generate flat turn radii but do we have a tool that will for a particular speed give you the vert turn radius? Also, if maybe one could dial in a direction vector and an up vector, (or a quaternion), and it would calculate the turn radius for that position given a speed. Does such tool exist?

Thanks
Ardy

what is the tool for generating flat turn radii?

[Baumer]

I use Badboys' calculator;

http://bbs.hitechcreations.com/smf/index.php/topic,284578.0.html

[LLogann]

He needs to update the url, it's gone.   

I use Badboys' calculator;

http://bbs.hitechcreations.com/smf/index.php/topic,284578.0.html