Re: [Flightgear-flightmodel] Inertia and Wind

[Tony P. <ap...@ea...>]

On Wednesday 27 June 2001 03:37 am, you wrote:
> Jon S. Berndt writes:
>  > The forces and moments on the aircraft *should*be* calculated based on
>  > the airspeed sensed by the aircraft. This means that on the runway a
>  > stationary aircraft should see an airspeed of 25 knots if there is a 25
>  > knot headwind.
>
> I agree that that is the case in the air when the wind speed is
> constant, but I'm not sure it's the case on the ground.  Shouldn't
> modelling a plane on the ground should be roughly similar to modelling
> a car, truck, or bus (except that trucks are less likely to become
> airborne unless they have Firestone tires)?

For the ground interaction you'll probably want to calculate wheel speed 
based on ground speed.  For the aero, you still need to use airspeed.
 


-- 
Tony Peden
ap...@ea...
We all know Linux is great ... it does infinite loops in 5 seconds. 
-- attributed to Linus Torvalds