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

[Hodo]

ZobrAA: cool. Although it's not my mod, it's camlost's!

Hodo: I'll make the AJE one the -229A, which seems the most recent, efficient, and powerful.

Here's a great reference btw: http://books.google.com/books?id=_5vA_5XK33sC&pg=PA584&lpg=PA584&dq=%22j57-p-20%22&source=bl&ots=oPRpSbDVr7&sig=-o3UmLH74DP1SwJ4O5eORtJ1Bfc&hl=en&sa=X&ei=wQ69U8_zF9DgsASgyYCACw&ved=0CDQQ6AEwAg#v=snippet&q=f100&f=false

Yeah I found the inlet size is the same size as the older F-100, but the improvements in materials that make up the inlet and compressor changed giving it a higher temp range.

[jrandom]

Would it be possible to get each engine's top speed listed in their descriptions? For most engines, I have no idea what their ideal use cases are, aside from the J85 and F100 (Mach 0-2 as noted in the descriptions) and the J58 (SR-71 engine which is the only plane in the list I'm actually kinda familiar with).

Would be quite handy for those of us who don't have a library of planes committed to memory. (Of which I am ashamed. Someday I'll know this stuff but my rote memory has always been horrible. I'm great with learning how stuff works on a theoretical level, but memorizing details by rote just kills me.)

Edited July 10, 2014 by jrandom

[Hodo]

Would it be possible to get each engine's top speed listed in their descriptions? For most engines, I have no idea what their ideal use cases are, aside from the J85 and F100 (Mach 0-2 as noted in the descriptions) and the J58 (SR-71 engine which is the only plane in the list I'm actually kinda familiar with).

Would be quite handy for those of us who don't have a library of planes committed to memory. (Of which I am ashamed. Someday I'll know this stuff but my rote memory has always been horrible. I'm great with learning how stuff works on a theoretical, but memorizing details by rote just kills me.)

The amount of stupid stuff packed into my memory is just ridiculous. Like I can still tell you the stats of a WSP-1A Wasp from Battletech, the history of the Inner Sphere from Battletech. The rules to Cyberpunk2020 and most of the history. Anything you want to know about the F-15A/C/E Eagle, or the F-16 Fighting Falcon. The history of the Nissan Z car. And name any Crystal Method song out there. And I have Cab Calloway Minnie the Moocher memorized.

[NathanKell]

As a fellow BT junkie, and fellow plane geek, I approve.

jrandom: "top speed" doesn't mean all that much. There is a speed at which point you will have to decrease thrust or start melting the (compressor | intake | fan | nozzle, but probably the compressor), but if you do decrease thrust you can keep going. However, I have just finished reworking all the turbojets and afterburning turbofans in AJE to (a) be specific models thereof, ( have actually correct stats for those models, and © have descriptions that try to fulfill your desire. Since static wet thrust is shown by the engine module's info I only add static dry thrust to the description. SFC is given in Imperial because that's what's used by the Tester and by my references. "Temperature limit" means, at this point at least one station of your engine will hit Tmax.

Examples:

title = AJE Rolls Royce Avon RB.146 Mk.302

description = The Avon was Rolls Royce's first axial-flow turbojet, introduced in 1950. The RB.146, an early 1960s model, was the ultimate military Avon, an afterburning turbojet powering the English Electric Lightning F.6. 56.45kN dry. SFC 0.85/1.85 lb/lbf-hr static. Temperature limit Mach 2.4.

title = AJE Pratt & Whitney J57-P-21 Turbojet

description = Late 50s turbojet. The J57 was a workhorse, designed in the early 1950s and powering the B-52, most of the Century Series fighters, and even the U-2. This represents a later model, the -21, which powered the F-100C/D/F. 45.4kN dry. SFC 0.77/2.1 lb/lbf-hr static. Temperature limit Mach 1.9.

As before, you can just download-zip the github repo.

[jrandom]

I probably should have said... I dunno, "intended speed" or some such thing? But the descriptions you posted are great. Those give me exactly the kind of information I need.

[Hodo]

So after the changes the same aircraft with the new engine can top out around mach 2.9+ at 10km ASL, which is pretty fast. I can't imagine how fast the real F-15C/E with those engines actually is.

[NathanKell]

Structural/heat limits on the airframe prevent much beyond 2.3 IIRC.

Check out the F-15C SAC here:

http://alternatewars.com/SAC/

[camlost]

I've been quite busy recently, will come back by late August

[NathanKell]

RL always first! Catch you soon.

Lemme know if you want me to stop working on this btw!

[Hodo]

I've been quite busy recently, will come back by late August

No worries, by then .24 will have come out and broke everything you have done anyway. J/K

But as NK said, RL first.

EDIT- Congrats NK on your Modder-ator status.

Edited July 12, 2014 by Hodo

[ThorBeorn]

NathanKell: I deleted AJE and installed your update from Github. Since then my only two propeller planes have lost very much performance. The planes are identical except for the engine used. One uses the BMW 801-F1 (Guess), the other one uses the BMW 801D Piston version. Both aircraft weigh 3,5 tons with lightweight wings and minimal fuel. The engines are rated at 1849 and 2350 hp respectively, but both planes perform very much the same. That is they accelerate VERY slowly, can hardly climb, only gets up to ~70 m/s at the end of the runway etc. Am I doing something obviously wrong? Both engines are rated at 5 kN when right clicked in the SPH.

Oh and btw I updated FAR also as recommended by you.

[NathanKell]

ThorBeorn: the prop modeling is weird. I was going to replace it, now .24 hit, so wait a few days. I'll also fix anything weird between AJE and .24.

[Gobur]

I think weird bug is ni 0.24, all piston have 5 or 40kN thrust, and all rotor 100kN

[Subcidal]

Still using 23.5 for the record, But is there a reason the engine nacelle part doesnt function as an intake? Not the one that cools the engines, the other one with a modeled intake part and and openable/closeable intake. It seems to do nothing for AJE.

[SXDesign]

hey guys. im trying to get RSS RO working, but after 2 days of trial and error (i couldnt get the B9 AJE engines to work) i finnally have them working, that is they turn on heat up, but producing no thust, anyone else have this issue?

the plane is just stuck on the runway

the first day i had RSS RO working but then the engines didnt work, they just had no action groups, and in the info of the engine, (b9 models real world counterparts) there was no thust info thus they didnt work, and when i selected one of them they would show a weird glitch where the engine was running and seemed to flame out, that was in the SPH, i dont know what to do, any suggestions

i just really want to get this working plz help

[NathanKell]

Are you using .24 or .23.5? RO is not available for .24 yet.

[Black-Talon]

This ... the plane geekery in here .. I'm in awe.

...and drooling a little. Well done. Excited to try it soon!

[TeeGee]

So is it safe to assume this mod is not working with 0.24 yet?

[Gobur]

real fuels not working, and this mod need real fuels, but on my seting 64bit jet engins work (real fuels have problems mostly with solid fuel rocket), but prop from firestarter not (all have 5kN thrust).

[SXDesign]

Are you using .24 or .23.5? RO is not available for .24 yet.

im using 23,5 and it got it to work, finally, love the RSS RO mods great job, realism for life:D thnx

[Hodo]

Having both installs on my computer, .24 and .23.5, AJE only works in .23.5 currently.

[NathanKell]

I'll get to this when I finish RF etc. The .23.5 version mostly works, so I don't think it'll need too much fixing.

[Hodo]

I'll get to this when I finish RF etc. The .23.5 version mostly works, so I don't think it'll need too much fixing.

Oh no rush.. I am enjoying still playing in .23.5 RO/RSS. I still haven't sent a Kerbal to space...lol haven't bothered. Put satellites in orbit and kind of went... meh on sending anyone to space.

[AdmiralTigerclaw]

Quick thought from me...

Last install for AJE I had was for the 23.5 version just before .24s release.

I encountered two things that need, or needed addressing.

1: The huge B9-based CF6 High Bypass Turbofan does not play nice with Deadly Reentry. Full power engine exhaust off of it incinerates the raked support pylon built specifically hold it. (The pylon blows up and the engine just falls off, even at a dead stop on the runway. Despite being above the engine.) The exhaust stream is apparently wider than the engine itself.

2: While playing with the CF6 HBTF, I noted it reacted instantly to throttle shifts and did not 'spool' as it should have. A turbine engine on average should take between 5 and 10 seconds to respond to a full throttle sweep. I make no assumptions if this is universal for other engines, but I can assume spooling is not working as it should.

That being said, I would like to make a note that if it's not set already, the P&W J-58 engines don't have an afterburner at/above 90% throttle. The afterburner for the J58 engines on the SR-71 starts at 50% throttle and has a progressive level from there to max.

I assume it's also known that J58s require an external starter to spin up the turbine, and triethylborane to ignite the jp7 fuel at startup(green flame), as well as a shot of TEB at each ignition of afterburner. (Enough TEB on an SR-71 for 12 shots to both engines per flight) But that would be needlessly complicated to simulate unless AJE specifically WANTS to go down that route.

[Guest]

That would be doable using EngineIgniter. It doesn't usually mess with planes, but it could be used for that. AJE could probably interact with it, it'd also make this behavior optional.