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TSR2 Flight Dynamics

padburgess said:
Rob

Yes I gave the "new"variant/entry a unique title and made sure the original folder did not have that variant listed. I haven't had a chance to play with this for the last couple of days but am about to get into some test flying to see how my changed bird flies.
Thanks to all who have posted ideas or advice. It will be interesting to see how this thing pans out. I have the engines set for 19600lbs of static at present so I may increase that to 22,000dry and 30,000wet in a bit.

Paul
Click to expand...

Paul

Be careful increasing the thrust , check each increase by examining the length of Take off run.
Keep your take off run at a realistic length .

With the ALPHASIM F-111 , I increased the thrust to 20,850 and that was OK ,
then I increased it to 25,100 as the F-111F had that thrust in RL , the aircraft took off like a rocket ship , it resulted
in an unrealistic short take off , too short to live with .
I reverted back to the 20,850 figure.

Cheers
Karol
PS ;
TSR2: Britains lost bomber is a fantastic book , highly recommended for those that like detail and nuts and bolts stuff ,
best book ever on that bird.
 
COBS said:
Paul

Be careful increasing the thrust , check each increase by examining the length of Take off run.
Keep your take off run at a realistic length .

With the ALPHASIM F-111 , I increased the thrust to 20,850 and that was OK ,
then I increased it to 25,100 as the F-111F had that thrust in RL , the aircraft took off like a rocket ship , it resulted
in an unrealistic short take off , too short to live with .
I reverted back to the 20,850 figure.

Cheers
Karol
PS ;
TSR2: Britains lost bomber is a fantastic book , highly recommended for those that like detail and nuts and bolts stuff ,
best book ever on that bird.
Click to expand...

Remember, thrust and drag are related. One of the most difficult pieces of data to secure is an accurate engine deck. That's the performance table for the engine used when designing aircraft and they are very proprietary. I only have one or two of them. But they give you the performance of the engine at different rpm levels and altitudes for accurate calculations of performance. That's why I say it's always good to try and get engine data first, make sure it's modeled accurately, then move on to the aerodynamics. But FS doesn't calculate thrust accurately enough, especially with afterburners, so I've been looking at making a thrust gauge that would over ride FS's.

Anyway, my point is, if you get the thrust right, and your airplane behaves like a rocketship, that means your drag is too low. Unless you're actually modeling a rocketship. ;). I was working on an FDE for the F-101B a few years ago (I lost the most up to date version, so I never completed it) but one of the best pieces of data I had were actual acceleration times at given RPM/Thrust settings for the F-101B on take off, which really allowed me to dial it in. That's the other type of information that's really great to look for when making FDE's. A combination of accurate engineering data and detailed flight reports will be your best references when developing FDE's.
 
Here is an alternate version of flight dynamics for the TRS.2. Very tricky to get this right as the original weights and balances were somewhat off. Hope you find the new version to your liking.
mal
 

Attachments

  • TSR.2 FDE.zip
    11.5 KB · Views: 1
Mal, Just tried it in FS9 & it throws up I'm afraid. A quick look cannot find the problem. Get the splash screen but then FS9 closes. Only the Prototype textures show on splashscreen, others just grey.
Not tried yet in FSX because previous version didnt work in FSX. Not had time to explore further.
Keith

Edit,
Correction; After a very short flight it does work in FSX a lot better than before, thanks a lot, but question - any reason known why HUD is opaque above about 75% throttle?
K
 
Whoops, I should have mentioned new FDE for FSX only, sorry 'bout that. I have no idea why that is happening to the HUD. My guess is it has something to do with the afterburner fx files or something to due with the HUD gauge or bitmap in the TRS.2 gauge folder. Perhaps someone who knows more about panels can shed some light. Remember this puppy was originally built back in '05, a mere 10 years ago.

At any rate, hopefully the new FDE will breathe some new life into a really cool plane and make it a little more fun to fly.
 
Dev One said:
Correction; After a very short flight it does work in FSX a lot better than before, thanks a lot, but question - any reason known why HUD is opaque above about 75% throttle?
K
Click to expand...

I've seen this sort of effect before with FS9 ports. It's the material settings used in the HUD that turn opaque when the lights are on. I assume there's a hidden gauge to switch the AB effects on at 75%.
 
Mal

Thank you for the new FDE for the TSR2 in FSX, your efforts are very much appreciated .
It is a stunning aircraft , what a shame that it never got to show it's real potential in service .

Cheers
Karol
 
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