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working on spin

Checked out the F7F-1, which if one does not do a careful recovery, you can spin all the way into the ground. In a spin it goes into a very deep stall, 50-70 deg AOA. The critical item to maintain this spin and not want to fly out into a dive (without maintaining up elevator) is to have a neutral or pitch up moment (post stall) which keeps the nose from dropping.

Cheers: T
 
Well, flying the Dreamlifter in front of the crowd must be quite something! Maybe there's another chance for you as the plane is rather new, I'd say.

Concerning the spin. e.g. with the default loadout (which is even a bit nose heavy) and empty main tanks) she spins at around 50kts with an AoA between 50-60deg with full up elevator and pro spin rudder.
Elevator trim full up of course as FSX unfortunately doesn't simulate a normal elevator with a fixed stabilizer.
To have a realistic pitch authority one needs to take the awful 'FSX trim simulation' into account.

That's why I prefer planes which have an adjustable stabilizer IRL like the Super Cub.
BTW, the 'new' Super Cub spins at around 30kts and remains in the spin with all controls in neutral.

Cheers

Bernt
 
Actually the Dreamlifters are rather ancient 747-400's that have given their lives to a reincarnation.

The condition I was experimenting with in the 310 was full fuel and 4 pax, two in front and one in each row, giving a quite aft CG of something like 38%. Of course one of the items we have to contend with as far as CG goes, is that FS pretty much ignores the stability issues that an aft CG engenders and still relies on the seperatly derived tables and scalars.

I think the first FS9 plane I saw that was a good spinner was Sanderson's Huricane, lots of people said it couldn't be done. Indeed possible, but not an easy formula to approach! I suppose Jerry could program it into "Airwrench".....

Cheers: Tom
 
fliger747 said:
I suppose Jerry could program it into "Airwrench".....

Cheers: Tom
Click to expand...

Should be there already. On the Tuning tab, move Spin Stability slider towards 'Unstable' and move Stall Roll off slider towards 'Positive'. Results will vary depending on other settings.
 
Jerry:

I am probably about 5 versions out of currencey with Airwrench. A good program and one I reccomend a lot.

Looking at the varying AOA of the aircraft during a spin, it seems to oscilate over a range, the oscilation being coincidental with the rotation, one oscilation cycle per rotation. I presume that this is derived from the way FS "computes/resolves" the different aerodynamic conditions of each wing?

Cheers: Tom
 
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