Author Topic: Uncovered serious flaw in Mossie's FM (Read 1545 times)

Hades55 · « **Reply #15 on:** July 07, 2004, 10:27:25 PM »

I have see the same problem in tiffy.
Stall horn at 300 knots.
It looks like the code reads the movements of joystick and give
stall signal.
If this is indeed the case then the program must confirm the stall in relation with the speed.
There is no stall in RL at 300 knots whatever you do with the stick.

GScholz · « **Reply #16 on:** July 08, 2004, 05:59:01 AM »

Quote

Originally posted by Hades55
There is no stall in RL at 300 knots whatever you do with the stick.

That is not entirely correct.

ALF · « **Reply #17 on:** July 08, 2004, 05:36:37 PM »

Im not sure what you all are doing to the mossie...but I can only get it to spin like that if I serriously over stick the airplane into an accelerated stall. at 300-350...it takes very little stick to pull 4 G's....and I mean VERY LITTLE. Either you may be pulling back way to hard (this causes the mossie to spin at any speed

or you may be having a spiking problem with your joystick.

I just went and did some quick testing...and the mossie is very stable at 5K at 300-350 pulling 3-4 G's.....bleeds right down to stall speed.

Widewing · « **Reply #18 on:** July 08, 2004, 07:31:33 PM »

Quote

Originally posted by ALF
Im not sure what you all are doing to the mossie...but I can only get it to spin like that if I serriously over stick the airplane into an accelerated stall. at 300-350...it takes very little stick to pull 4 G's....and I mean VERY LITTLE. Either you may be pulling back way to hard (this causes the mossie to spin at any speed or you may be having a spiking problem with your joystick.

I just went and did some quick testing...and the mossie is very stable at 5K at 300-350 pulling 3-4 G's.....bleeds right down to stall speed.

I have tested this ad nauseum and have discovered several factors that cause the problem.

I will dial in a ton of damping. Airborne at 300 mph, I jerk back the stick briefly, for no more than a fraction of a second. The elevators DO NOT MOVE and the aircraft does not change angle of attack whatsoever. Yet, the g-meter pegs up beyond 7 g and the aircraft snaps into an accelerated stall. Eventually it drops straight down, absolutely flat, no forward movement.

So, we have issues with the software responding to a g input that didn't exist. We also have an aircraft with zero forward velocity despite 3,200 hp providing thrust thru a pair of propellers.

Watch the film again and pay close attention to the g-meter and the angle of attack when it pegs.

My regards,

Widewing

GScholz · « **Reply #19 on:** July 08, 2004, 07:45:11 PM »

I'm unable to replicate this Widewing. I set the dampening of the pitch axis to full, and the G-meter does not spike with joystick input. (You only set dampening for the selected axis, and the default is roll.)

hawker238 · « **Reply #20 on:** July 09, 2004, 09:53:31 AM »

I'm getting this zero forward motion stall quite a bit..... Its not a flat spin or anything either.

MetaTron · « **Reply #21 on:** July 09, 2004, 08:34:15 PM »

I cannot duplicate the problem on my system.

Widewing, can you post a screenshot of your pitch curve (elevator)?