Played a bit offline to determine the shortest spin recovery for the P-39.
My record stands at recovery in 680m of altitude.
I challenge you to beat it

Track: P-39 N-1, 50% fuel, v4.08 (all realistic settings on)
http://www.datafilehost.com/download-9546dbce.html

Flat spin?? If so, . Could anyone of you good pals post a clip of it on youtube or somewhere, for us poor saps that don't have the sim installed atm?

Er, no, normal spin - nose angle is oscillating around 50 deg to the horizontal. I turned at 0 power until I stalled and spun, then took immediate recovery action.

Now if it had been a recovery from a flat spin at 680m I would`ve been truly impressed!

...And asking for a track!

Per popular demand, we bring you the second installment of the Cobra Spin Of Doom: Flat Spin.
Recovery from fully developed flat spin in 1000m alt.:
Behold!
http://www.datafilehost.com/download-80a222ab.html
/waited for flat spin to develop, took action at 1050m alt./

Any challengers ?

quote:

Originally posted by SterlingX:
Recovery from fully developed flat spin in 1000m alt.:
Behold!

Any challengers ?

Nope. I've never flown one of those deathtraps.

quote:

Originally posted by TgD Thunderbolt56:

quote:

Originally posted by SterlingX:
Recovery from fully developed flat spin in 1000m alt.:
Behold!

Any challengers ?

Nope. I've never flown one of those deathtraps.

Experience with the p-39 is actually quite rewarding, it's top notch online when flown right - it's my current fav.
Most of the time spins are avoidable, but since they do happen once in a while I decided to test for the best way to get out of those.
(those tracks are the result, I made the second track just now)

Spin recovery in the P-39 is on my list of things to work on, I pretty much avoid that plane because of it. But, I agree it's a great plane, though.

Hi £,
Would be very interested to see your ntrk but when downloaded gives me a php file extension. Can you put me wise as to get out of this spin also?
Have only ever managed to get out of a "flat spin" in this machine after using flaps and gear in addition to normal spin recovery and that seems to take forever. The direction of spin also has an effect as the engine torque can have a severe impact on recovery.
Thanks in advance.
Nicho

It works on my computer - you click on the links, then it opens a page that says 'click here' (to download) (?)

Ctrl+E works most of the time

quote:

Originally posted by x6BL_Brando:
Ctrl+E works most of the time

Yep, I find the parachute to be the most reliable spin recovery mechanism for me...

1. 0% throttle
2. Full down elevator
3. Full flaps
4. full opposite rudder to the spin

Am I close.

Honestly, the Cobra series has always been one of my favorite rides and if one is available in the planeset of whichever server I join, I'll take it. With enough altitude, flat spin recovery is always possible, but not guaranteed.

I consider myself a cobra "specialist", but not an "expert".

quote:

Originally posted by SterlingX:
It works on my computer - you click on the links, then it opens a page that says 'click here' (to download) (?)

Hi again £,
Yup, I managed to download your file, but as I said, it is called "get.php"!! If it had a "ntrk" file extension I could watch it. I'm not too good with file extensions so basically I'm asking how to either "open" it or "convert" it?

Whilst we are at it, I think it would be very helpful if we could know all the details of your spin experiment. There are an awful lot of variables!
- Which P39 variant?
- How much fuel?
- What ordnance?
- What altitude did you start at? (density altitude has an impact)
- Left or right hand spin?

I think several guys like me would like to know if there is a way of getting this beast out of a genuine "flat spin" in minimum altitude.
Like I say, I have only managed it by lowering flaps to alter the "centre of pressure" and lowering the gear to give drag to avoid overspeed in the pull-out.
This is in addition to the normal spin recovery:-
- Full opposit rudder pause....
- Full down elevator
I have in addition tried the "pumping power" technique but even in a left hand spin with torque helping the recovery, she only seems to come out by lowering flaps and thus changing centre of pressure.
Even then, from a "flat spin", the recovery uses up several thousand feet.
Would be very interested to hear if anyone else has a better way. I'm afraid like most guys, I step onto the wing and say bye bye when it happens due to my over zeallous control inputs!
I would still like to see your movie if you can tell me how to install the file?
Nicho

quote:

Originally posted by TgD Thunderbolt56:

quote:

Originally posted by SterlingX:
Recovery from fully developed flat spin in 1000m alt.:
Behold!

Any challengers ?

Nope. I've never flown one of those deathtraps.

quote:

Originally posted by TgD Thunderbolt56:

Am I close.

Also, gotta go to full throttle when the nose is lowest, preferably at a point in its oscillation when it's swinging down before swinging up again. Otherwise it won't recover at all. I also used gear down, but it didn't seem to make much of a difference, compared to sans-gear.

@Nicho: left clicking all the way through might be the way to go, rather than right clicking and 'save as' (I can't help beyond that speculation)

quote:

Originally posted by SterlingX:
@Nicho: left clicking all the way through might be the way to go, rather than right clicking and 'save as' (I can't help beyond that speculation)

At last, success! Don't know what I did but I got your ntrk.....

Watching it has of course answered many of the variables that I posted above except for "ordnance". Anyway, great track and I have replicated it several times:-

Interestingly, I thought for a moment that you had discovered a very unusual spin recovery trait for this machine by using "aileron" in the recovery (I see the stalled wing with down aileron....more drag!!) This is a no-no in all the types I have tried IRL, but I thought maybe it had helped?
Having tried your identical 1050m recovery and used "aileron" and "no aileron input" I find that the old premise (no aileron input)will extract the machine 200-250m higher than your recovery!! I did not use power either.
I cannot post a video yet, but I'm sure if you try the exact recovery below that you will pull out at 200-250m. above the ground (I think yours was at about 100m)
- Full left rudder...pause
- Full down elevator
- Full flap and gear (gear just to reduce speed and therefore height loss in the pull out)
- Zero power throughout.
NB. I selected 50% fuel but zero ordnance.

This is still nearly 3000ft from start of recovery....!
As has been said, it is a delightful machine if you are careful with it.
Great post "£" and have enjoyed once again "exploring the envelope"
Nicho

Hi "£"

You can view my ntrk by clicking here:-SpinP39Nicho
BFN
Nicho

quote:

Originally posted by SterlingX:

quote:

Originally posted by TgD Thunderbolt56:

Am I close.

Also, gotta go to full throttle when the nose is lowest, preferably at a point in its oscillation when it's swinging down before swinging up again. Otherwise it won't recover at all. I also used gear down, but it didn't seem to make much of a difference, compared to sans-gear.

+1

Anyone tried to use trim?
We can trim that nasty Cobra for perhaps, better results .