Douglas X-3 Stiletto FSX Native

[Milton Shupe]

Just realised that there is one more stage! So I have flown with Flaps 3, but still not able to get to 250 Knots in 7500 ft, although climb out better, I still have problems achieving 400 knots when it will start to climb again without losing speed.
Off now to read subsequent stuff here!
Keith

EDIT: Having read the above posts I must try in FSX A on my laptop. Will report back later.

EDIT2: Just had a flight in FSX A - still took 10,000 ft to get airborne at less than 250 KIAS, but the rest of the flight & effects worked OK - multiple AB effects triggered by throttle lever position, not RPM% - in fact she seems to be quite a pussycat as long as I assume one doesn't stroke it the wrong way. So looks as if FSX SP2 users are out of luck - I'm lucky to have both versions.

LOL Yup, you are correct on runway length. I am using KDFW longest RW's at 13,000+ and it takes 13,000'. Not sure where I got a shorter rw length from. :-/

 

[MrZippy]

Thank you Roman, just tested, seems to work the same.

I have not checked the other goodie you sent earlier; will do that now.

It works!!!!! Someone gets a big raise outta petty cash C'mon baby, light my fire

 

[Milton Shupe]

OK, no problem! Just wondering....do I use what you are writing and copy to notepad and "save as" an XML document and then paste into the AB folder?
Or add your gauge to the xf92aeffectscntrl.xml in the AB folder?

Did you get Spokes2112's changes in okay? Tested?

EDIT: Okay, just missed your post; I see it worked! Great!

 

[Milton Shupe]

It works!!!!! Someone gets a big raise outta petty cash C'mon baby, light my fire

With some slight modifications, you could also get the XF-92A Afterburner working for SP2.
Change to Single engine gauge and put in xf92a folder, change the aircraft.cfg, add gauge to panel.cfg.

 

[MrZippy]

With some slight modifications, you could also get the XF-92A Afterburner working for SP2.
Change to Single engine gauge and put in xf92a folder, change the aircraft.cfg, add gauge to panel.cfg.

Thanks, Milton! Already planning on that

 

[Milton Shupe]

For those interested, in the other X-3 thread there was a link posted to a free POH for this aircraft.

You can find it here:

http://aviationarchives.blogspot.com/2016/05/douglas-x-3-flight-operating-handbook.html

 

[spokes2112]

Attn : Mr Zippy

With some slight modifications, you could also get the XF-92A Afterburner working for SP2.
Change to Single engine gauge and put in xf92a folder, change the aircraft.cfg, add gauge to panel.cfg.

Charlie,

RE: XF-92, No real need to change to single engine, if you want use as is go ahead. If there isn't a second engine, no harm, no foul.

RE: X-3, I sent Milton a different kit that alleviates massive gauge flooding, a good probability of sim crashing over time reported by previous testers. For the life of me I cannot remember if the fixes are SP2 compatible. In our F-111 release we used a different type of anti-flood code. Steve was on SP2 while I was on Accel and this was many, many...... moons ago.
Could you give this a try and report back? It's a simple drag / drop & overwrite into the panel folder, reload aircraft. No worries for you as backups are provided if it doesn't work.
If the AB visual effects work as they should then it is all good. If not, the fix can be rewritten using the old, rather elaborate, code.

Here --> https://www.dropbox.com/s/o1mgyhk47y8ftf6/X-3 Smoke Controller Flood Fix .zip?dl=0

Roman

 

[MrZippy]

Got it! Will give it a try, thanks

 

[Milton Shupe]

I have just uploaded a beta 2 version that incorporates the fixes and improvements discussed so far.

1) Removed panel.cfg [Window08] that was causing issues for some people
2) Fixed the afterburner code for FSX SP2 - thanks to Spokes2112 for this code
3) Corrected Custom XML Effects Control code that was "event streaming" - thanks to Spokes2112 for this fix

http://www.sim-outhouse.com/sohforu...6-FSX-P3D-Douglas-X-3-Stiletto-BETA-Release-2

 

[Dev One]

Milton, Thanks got V2 & have done two takeoffs from Fort Worth - landing is a different matter!!!!

Data from AFDS 258 KIAS took 11878 ft, thrust 5854 lbs, +2 trim, Flaps 3. Climb out a lot better & 400 kts easier to achieve.

Effects all work perfectly, including AB sound.

Seem to have 1000 lbs more thrust than before, but maybe due to location as previous results were from UK airfield.

Currently reading 'Probing the sky' which Pam sent me a little while ago, & from where I've got to in the book, the model does not seem to be what I would call 'twitchy in pitch' as was reported in the early test flights. One does though have to be gentle with her at the moment.

My landing problem is related to locating the airfield, so must light up Plan G to see where I am going & turn radius is very large, not sure that a 5 mile off set to the runway is achievable as noted in the pre test flight POH.

Enjoying the challenge - thanks to every one involved.
Keith

 

[MrZippy]

WOW! What a difference in both the X-3 and XF-92. Basically a kick in the pants when the AB starts up! Now if I can just keep the nose from drooping slightly when trying to land, I'll be in Fat City! Thanks to Milton-Team -Roman for all their work on these projects

 

[Milton Shupe]

Milton, Thanks got V2 & have done two takeoffs from Fort Worth - landing is a different matter!!!!

Data from AFDS 258 KIAS took 11878 ft, thrust 5854 lbs, +2 trim, Flaps 3. Climb out a lot better & 400 kts easier to achieve.

Effects all work perfectly, including AB sound.

Seem to have 1000 lbs more thrust than before, but maybe due to location as previous results were from UK airfield.

Currently reading 'Probing the sky' which Pam sent me a little while ago, & from where I've got to in the book, the model does not seem to be what I would call 'twitchy in pitch' as was reported in the early test flights. One does though have to be gentle with her at the moment.

My landing problem is related to locating the airfield, so must light up Plan G to see where I am going & turn radius is very large, not sure that a 5 mile off set to the runway is achievable as noted in the pre test flight POH.

Enjoying the challenge - thanks to every one involved.
Keith

Happy that it is working for you.

WOW! What a difference in both the X-3 and XF-92. Basically a kick in the pants when the AB starts up! Now if I can just keep the nose from drooping slightly when trying to land, I'll be in Fat City! Thanks to Milton-Team -Roman for all their work on these projects

If the nose is drooping with full flaps, you are over-speed. Allow her to slow (or use speed brake) but keep power on, trim nose up. Find the sweet spot. Get stable before short final. Over the threshold at ~200kias, TD around 180kias.

 

[MrZippy]

Happy that it is working for you.



If the nose is drooping with full flaps, you are over-speed. Allow her to slow (or use speed brake) but keep power on, trim nose up. Find the sweet spot. Get stable before short final. Over the threshold at ~200kias, TD around 180kias.

Thanks, Milton....working on it!

 

[simtech]

Great Job

Milton and team... Wow! Another fine product from Uncle Milton's Skunk Works. Just d/l beta 2....All things worked well, excepting the vise grip I had on the stick. I'm using FSX-A and had no issues with effects and AB. Is it my imagination or is this AB slightly less pronounced than the X-92? Either way, this is a treat and if you can get it on the ground in reuseable condition... that's the reward. This gives some insight into early test pilot conditions. I was tense, sweating and I'm sitting in comfortable surrounding... I can only imagine the pilot sitting in this pressure cooker. These guys must have had steel gonads.

Great job... I only attempted two landings... batting .500. My performance, not the airplane.. Great job, guys and gal...The description of pivoting on a jello pyramid is so apropos. Thank you again for a superb gift.... Terry

 

[Milton Shupe]

Milton and team... Wow! Another fine product from Uncle Milton's Skunk Works. Just d/l beta 2....All things worked well, excepting the vise grip I had on the stick. I'm using FSX-A and had no issues with effects and AB. Is it my imagination or is this AB slightly less pronounced than the X-92? Either way, this is a treat and if you can get it on the ground in reuseable condition... that's the reward. This gives some insight into early test pilot conditions. I was tense, sweating and I'm sitting in comfortable surrounding... I can only imagine the pilot sitting in this pressure cooker. These guys must have had steel gonads.

Great job... I only attempted two landings... batting .500. My performance, not the airplane.. Great job, guys and gal...The description of pivoting on a jello pyramid is so apropos. Thank you again for a superb gift.... Terry

Thanks Terry; the team has done well.

Funny, initially I had some serious AB kick dialed in (great fun too), but fortunately Pam and Paul got the AB working correctly. LOL

Thanks again to Roman who helped get the SP2 AB and gauge event flooding issues corrected.

 

[Dev One]

Out of curiosity (not the Mars variety) I have flown Beta2 in both FSXA on my laptop & in FSX SP2 on my desktop, using Fort Worth in both.

Take Off distances using AFSD are different as is the gross thrust at lift off. I presume this can be the difference between having only one stage of AB in FSX SP2 as opposed to 3 in FSXA.
Values:
FSXA - 260 KIAS - 10629 ft - 7171 lbs thrust
FSX SP2 - 262 KIAS - 12826 ft - 5791 lbs thrust. M=1 plus a very little bit is achievable but almost vertical needed.

I did a flight from Boscombe Down UK in FSX SP2 to try a cross check, - mainly to be able to use PlanG map - but had to lift off as run out of runway, but values were:
253 KIAS - 10959 ft - 5976 lbs thrust.

Note that AFSD quotes it as Gross thrust, so is this the sum of both engines? With Piston engines one can usually select which one to record. (Thinks, I could see what the values are with one motor shut down.......)

Thrust decreases with increasing airspeed as well as altitude.

She is flyable with FSX SP2 thrust & a lot better than Beta1.

Even with No weather selected I can still come across turbulence & she will roll to +/- 90° uncontrollably & crash out!

I have noticed though that one has to have quite a bit of power on below 350 Kias otherwise she can easily bite even with flaps in use & the final approach is best with everything out including spoiler & with lots of thrust.

Still need to have crash detect off as a very slight touch down will trigger a crash - UC not absorbing sufficiently?

Last comment - in exterior spot view the AB effect extends outside of the airframe having a square projection screen, also the visual effect is patterned as if there is more than one layer being used. This is not apparent in the other exterior views.

Keith

 

[Dev One]

EDIT my last - just to make sure I didn't lose my previous post...

Just done an engine fail test, & yes the thrust is halved at similar lift off airspeed & altitude. So simulated thrust appears to be under performing, which has been compensated for in Cd value?

I did note that I cannot shut down the engines - had to assign a Failure key for No 2 engine.

One other thing I noticed is the fixed needle on the compass - is it supposed to always show east?

Keith

 

[spokes2112]

I presume this can be the difference between having only one stage of AB in FSX SP2 as opposed to 3 in FSXA.

Keith,

Good call on the different engine thrust! Yes there is a difference in thrust between SP2 & Accel.
In our F-111 project we noticed it when comparing numbers between sims.
We figured this out.. All things being equal, Accel with only 1 stage (versus 5, for testing), flight tests at sea level, standard weather, etc...
The atmosphere between SP2 and Accel are different! ( or interpretations of .air files )
Our F-111 has a configurator program to rewrite the aircraft.cfg for the following - SP2 vs. Accel, and the difference between the 5 engines available, TF-30PW-1 thru the TF-30PW-100
What we did is model each engine for correct performance in Accel then for SP2 apply a thrust_scalar =, in most cases it was around 1.12. The entry varied due to the different .air files per engine.
I had a spreadsheet with all the values but darned if I can find it It was an extensive amount of testing.

If an Accel aircraft has 5 AB stages stage 5 will be the same as SP2 with AB on. Max is max, it divides the lower stages into equal levels above the trigger.

also the visual effect is patterned as if there is more than one layer being used

Looked at all the effects when seeing what was going on with SP2 not showing up.
Yes.. There is an afterburner effect with 9 (+ ??, don't recall) elements in it! ( WOZZA !! )
Also noticed the slight bleed thru of one of the elements on the left side bleeding through the fuse too, only at certain view angles though.. Oh well, spend my time in cockpit LOL.

Flew that bugger a few times this morning with coffee.. WOW! that is way to wake up!
Currently at the clinic getting some anti-venom cuz she bit me a few times - LOL!

EDIT - Found the report, here --> https://www.dropbox.com/s/03u2u71mma0qrp9/F-111 SP2 vs Accel.pdf?dl=0

 

[warchild]

Did I and Paul do ok?
Paam

 

[Milton Shupe]

Did I and Paul do ok?
Paam

Pam! There you are LOL

Welcome back ...

Happy that you are here ... relax and enjoy.