[1.0.5] Advanced Jet Engine v2.6.1 - Feb 1

[Tidus Klein]

ok camlost I updated to 1.1 and it deleted all my parts....ALL of them:(

its has to be a MM problem, here.

OUT-PUT LOG

help....please

I really dont want to post ALLLl the mods i have downloaded soooo

huuuu.

toolbar
ATM.active tex managment hard mode
AJE 
aviation lights
B9 
Burn together
DRC
Distant objects
K engineer
E nav ball
FASA launch towers
FAR
Hull cams
Roster prop
KAS
Proc fairing
hot rockets
Nothke sercom
wheels sounds
persistant trails
RCS build aid
RCs sounds
real chute
the SH mods, like the MK cockpit and the KN2 cockpit
touhous rover seat fixer thing
ves view
auto trim gimbel
kerbquake
D12/ b9 expansion 
and MM 2.0.5

HUUUUUUUU my fingers hurt

actually looks a lot bigger in the game data folder

Edited May 9, 2014 by Tidus Klein

[Guest]

Update MM to 2.1.0 and try again.

[Tidus Klein]

NOPe It dident fix it:(

still no parts. at all

I know it AJE because when I delete it I get all my parts back.

well back to AJE 1.0

YUP that fixed it......odd well camlost HERES A BUGFOR YA HOPE YOU ENJOY!

Edited May 9, 2014 by Tidus Klein

[DeepOdyssey]

Is there anyway to install this and make it work, without the real fuel thing? I suppose the real fuel mod breaks mods like kw rocketry, and i don't really want that.

[Tidus Klein]

YOUR WISH IS MY DEMAND!

DOWNLOAD

for AJE 1.0

I just edited the CFG's to get rid of kerosene as the fuel.. all code and other stuffs belongs to camlost,

Edited May 9, 2014 by Tidus Klein

[camlost]

Tidus klein: That's definitely something related to MM. Make sure you have only one copy.

There's no need for another version either. I'll make a MM script to support case without RF

[Tidus Klein]

I have the latest version of MM.... so ya I have no idea what it could be.

because like i said as long as im using 1.0 my game runs fine.

also for the CFGs i posted all I did was delete the part that told MM to change the fuel over, so its not hard to too.

heck if you want to test it...so you know it works you could just make a link to my post for a download.....Its your code any way

Edited May 9, 2014 by Tidus Klein

[IvanTehFennec]

So, when selecting the F100 and the J85 engines in the editor, they spit out effects, then in-flight it still spits effects and has no sound, not to mention doesn't function, no staging, etc.

[camlost]

So, when selecting the F100 and the J85 engines in the editor, they spit out effects, then in-flight it still spits effects and has no sound, not to mention doesn't function, no staging, etc.

That's caused by an incompatibility issue between HotRockets and Tweakable Everything. It's up to you which one you want to keep

[Drew Kerman]

So, when selecting the F100 and the J85 engines in the editor, they spit out effects, then in-flight it still spits effects and has no sound, not to mention doesn't function, no staging, etc.

Toadicus is willing to look into this over on the TE thread if you send him an output_log.txt

And I tested this with Hot Rockets (and AJE and Firespitter) removed and it still happened until I took out Tweakable Everything

Edited May 10, 2014 by Gaiiden

[Guest]

Any chance for a Saturn-Lyulka AL-31? It was a jet engine used in many fighter planes, and also on Buran test articles (it was supposed to go on the full flight version, too).

[Dirt_Merchant]

If you simply remove the gimbaling module from the engines in question here, the issue of effects spitting in editor will be solved. those particular engines do not gimbal irl anyway, so no great loss to me.

[NathanKell]

So...I think something's wrong here, perhaps? Should I really be getting 0 thrust here?

[camlost]

So...I think something's wrong here, perhaps? Should I really be getting 0 thrust here?

http://i.imgur.com/LxHRij1l.jpg

That's about right. That engine and propeller are copied from a B-29 model. 300 knots is about its max speed. Apparently at this speed the propeller is windmilling already. As a matter of fact, few propeller airplanes go faster than 300 knots, right?

Also I think your plane should be capable of cruising at 7km or higher, where you could get slightly better speed.

On the subject of heating, there was a variable named fireflag in the solver ranging from 0 to 1, where 1 means engine is on fire. Every FixedUpdate() I set the part temperature with a linear function of fireflag. The overheat bar should show up when fireflag=0.9

if (aje.fireflag > 0.9f && useOverheat)

{

part.temperature = ((float)aje.fireflag * 2f - 1.2f) * part.maxTemp;

}

[Hodo]

That's about right. That engine and propeller are copied from a B-29 model. 300 knots is about its max speed. Apparently at this speed the propeller is windmilling already. As a matter of fact, few propeller airplanes go faster than 300 knots, right?

Also I think your plane should be capable of cruising at 7km or higher, where you could get slightly better speed.

On the subject of heating, there was a variable named fireflag in the solver ranging from 0 to 1, where 1 means engine is on fire. Every FixedUpdate() I set the part temperature with a linear function of fireflag. The overheat bar should show up when fireflag=0.9

if (aje.fireflag > 0.9f && useOverheat)

{

part.temperature = ((float)aje.fireflag * 2f - 1.2f) * part.maxTemp;

}

N1K1-J 354knots

P-51D 380knots max speed. 315knots cruise.

P-47D 376knots.

FW-190D9 382knots.

TA-152 410knots!

Unfortunately I have to agree though, aside from a few late war designs, there were a few prop planes that went faster than 300knots.

[NathanKell]

The screenshot was chosen somewhat poorly, as I get the same issue at about 270mph with that engine. Further, while planes made entirely to spec perform as they should or perhaps slightly better at high altitude (meaning the turbosupercharger modeling at least is working fine!) they uniformly underperform at sea level, by about 50-100mph.

[NathanKell]

Also: I note that your prop radius (r0) for the BMW engines and for the Packard V1650 is only 1.75ft. Are you sure that's not meters and lacking a conversion? Especially since that's exactly correct for the BMW engine's FW-190 prop radius in meters...

[camlost]

Also: I note that your prop radius (r0) for the BMW engines and for the Packard V1650 is only 1.75ft. Are you sure that's not meters and lacking a conversion? Especially since that's exactly correct for the BMW engine's FW-190 prop radius in meters...

OK seems they should be in meters. Will fix ASAP.

All the parameters are copied from existing YASim models, however it is possible that the authors had to tweak some numbers to make it 'feels' right. As a result, the numbers do not necessarily match real data.

I agree that the engines seems somewhat underpowered, and no matter how you tweak the parameters you have to sacrifice either take-off distance or max speed or fuel economy. FlightGear developers can alter the drag coefficient to compensate whatever they have, but we don't want to touch FAR. So maybe I can hack a 'speed buff' in AJE. Based on your experiment, how much are the planes underpowered in terms of top speed in general?

[NathanKell]

Interestingly, when I gave the engines their prop radius in feet, performance became much closer to what I expected. So I think it should be given in feet, and just a few of your entries had the radius specified in meters by mistake.

However, there does remain clearly something wrong in the engine modeling (either the model or the stats fed to it), since, for example, the R-1830 Twin Wasp develops 0kN of thrust above 260mph at sea level, despite the F4F-3 Wildcat, which used it, having a maximum speed at sea level of 270mph (and lord knows the Wildcat was a tub, so you'd need a fair amount of thrust to overcome drag...). It's not something that can be fixed by futzing with drag, since even with 0 drag, at 0kN thrust you're not going to go faster...

(It took a much cleaner and ~400kg lighter aircraft than the Wildcat to get to about 240mph at sea level; I verified the 0-thrust thing by climbing then diving to get to about 400mph level, and seeing when thrust went above 0.)

At any rate, the issue seems *very* [inversely] proportional to air density, since as I mentioned at high altitude engines might even over-perform.

[velusip]

This seems like way too much thrust.

Here are the Module Manager configurations for AJE, DRC, and FAR, : http://sprunge.us/beDb

Perhaps Ferram's KIDS mod interferes?

[camlost]

This seems like way too much thrust.

http://i.imgur.com/qie0opS.png

Here are the Module Manager configurations for AJE, DRC, and FAR, : http://sprunge.us/beDb

Perhaps Ferram's KIDS mod interferes?

That's weird. What's your thrust with or without afterburner at take-off?

[NathanKell]

KIDS rescales thrust based on what it recorded the engine's thrust at, onstart (before AJE did anything). AKA AJE and KIDS are fighting each other, and KIDS wins.

[velusip]

KIDS rescales thrust based on what it recorded the engine's thrust at, onstart (before AJE did anything). AKA AJE and KIDS are fighting each other, and KIDS wins.

Ah, no fun. I'll need to sort out Isp some other way.

[Azimech]

Actually most WW2 fighters had a top speed close to 300 kts already at sea level. All of the fighters used for medium to high altitude had top speeds above 300 kts. There's a clear distinction, powerful planes like the LA-7 and actually all Soviet types were used for low to medium altitude and thus performed badly compared to the German competition at high altitudes.

Is variable prop pitch accounted for? Without that, doesn't really matter how much horsepower you have. Would be like driving a F1 car with only one transmission ratio. Poor acceleration from start or poor top speed.

Edited May 16, 2014 by Azimech

[camlost]

Actually most WW2 fighters had a top speed close to 300 kts already at sea level. All of the fighters used for medium to high altitude had top speeds above 300 kts. There's a clear distinction, powerful planes like the LA-7 and actually all Soviet types were used for low to medium altitude and thus performed badly compared to the German competition at high altitudes.

Is variable prop pitch accounted for? Without that, doesn't really matter how much horsepower you have. Would be like driving a F1 car with only one transmission ratio. Poor acceleration from start or poor top speed.

Of course there's automatic variable pitch