The A2A Simulations Community

Is the cabin heat issue being addressed for the P-51? I'm getting COLD and Steady like some other people whenever performing a cold & dark start.

Edit: Nevermind. I need to learn to read

Two more bugs (dunno if they've been mentioned elsewhere, but if they are, then not by me):

Rock it to lock it is a bit buggy. When you rock it, and the fairing door swings toward closed position while the gear is almost extended, the gear quickly disappear all the way back up... and starts to extend again a second later. But when this happens like five times until you succeed on locking the gear before the fairing door causes a gear to teleport back up, it gets frustrating.

Shutting a fuel valve or running out of fuel causes gradual fuel starvation, and degrading performance prior to engine quitting. However, if you are idling on the ground and apply fuel cut-off, your engine continues to cough in the same way as keeping the mixture on. (I know that applying mixture cut-off can make the engine cough a few times as it quits quickly, but running out of fuel from the fuel lines causes a much longer coughing... which cannot be shortened by cut-off mixture.) This bug applies to P-51D and P-40 (obviously not to Spitfire because of lack of idle cut-off position for mixture).

I believe this is because the shut off lever cuts off the fuel to the engine driven pump, which is a much quicker process than fuel running through the fuel lines.

Anyway...once things are identified as being wrong with the P-51, I always notice them when I fly.

So I'm very anxious to get my hands on the new flight model, fixed sound...etc. Now Scott is talking about the hydraulic pump being too strong, and them tweaking that. I'm hungry for a patch.

*Cough* Don't hesitate to send me a beta patch...I'll test for you guys... *cough*

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My Guide On How To Fix Your X-52's Rudder!

1.if i dont push in the emergency gear release handle, after i started the engine it's starting a weird "knocking sound"..

has anyone come across with this ...phenomenon.. (i admit if i writed it wrong)

I don't think you understood what I mean with the bug. Obviously cutting the mixture from carb to intake manifold has a faster effect than cutting the fuel line to fuel pump.

The bug is: close the fuel valve (fuel pressure will start to gradually drop and eventually cough) and mixture cut-off becomes completely defunct. You should be able to shut the engine even if you have a low fuel pressure... yet it's impossible (you have to wait for fuel pressure to reach zero, then it quits by itself, at last).

Yeah. I believe it's because hydraulic pump is "on" whenever engine is running. Pulling the pressure release doesn't stop the pump.

It might be that to preserve CPU power (and thus provide better frame rates) the pressure release is timered to release pressure at some time interval (talking about less than second, so that the needle in the pressure meter doesn't twitch). This could create extremely small pressure which is released before it reaches to any mentionable level... but the fairing doors might react at anything non-zero.

ALTERNATIVELY (and I think this is a more likely explanation considering how they've modeled other pump-type components), the engine driven hydraulic pump is coded to deliver pressure in jolts because real pumps tend to function that way too, whether they have a reciprocating piston or a wankel-type rotary piston, etc. So it's also possible that the pump delivers jolts of pressure while the hydraulic bleed is constantly open. Since the opening of bleed valve has a limited diameter (which limits rate of discharge), the pump will deliver small variations of pressure in the hydraulic system even with pressure release on. Latter would mean the simulation actually imitates the real world. Latter could also also, even in real world, cause the fairing doors to resonate... the question just is if it's going to make a sound. A sound to occur requires the fairing doors to hit the open limit (there's no lock but there's a limit to how much it can open is present) AND it requires that it takes very little pressure to start raise the fairing door in order to drop it back. But not too little, as it has to manage to hit the limit before it receive it's next jolt of hydraulic pressure attempting to raise it. So were talking about a very small margin... but that doesn't mean the fairing door weren't in this margin (at least in Accusim if not in real world Mustangs).

Even if you were to get the fairing doors to vibrate against the lower limit, it would hardly be audible over the engine noise as to make a loud bang, it has to come down with speed. If it just vibrates down there it'd (in real world) settle againt the lower limit at a slow speed. In Accusim, the noise volume is probably fixed, allowing it to bang unrealistically.

So yeah, I'd say it's a bug, as in "it produces an unrealistic experience" even though the internal modeling might be (aside from adjustable volume) right on the spot.

I've installed the 1.3.1 update, but don't see either of these options in the Spit/P-40 (though I do see it in the P-51).

Is there a way of seeing the Accusim version number to see whether the update "stuck"?

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www.nzfsim.org

Just so you know, it's in beta. It hasn't been released yet.

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Ah sorry ... my mistake (thanks). I thought I was reading an old post and that it was referring to features that were going to be in 1.3.1 when released!

Any way of seeing the current version number though - could be handy in other scenarios?

EDIT: Not the right place I know, but the P-51 is a monumental achievement!

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www.nzfsim.org

Hello again.

I have encountered something strange in P-51, with the fuselage tanks empty and with some negative g's the tank gauge was still moving like the fuel would slosh inside it, is it normal, that the tank doesn't need to contain fuel for the gauge to give readings when maneuvering ?

The arm inside of the tank has a float on it, so as the plane flips over it would cause the float to move about making the gauge look like it still had fuel

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Ron
B-17 AIRFRAME 710 HRS PLUS AND CLIMBING




GIGABYTE X58A-UD5 MB, INTEL I7 950, 12GB DOMINATOR-GT DDR3 RAM, WIN7 64, GIGABYTE SUPER OVER CLOCK GTX 560 TI 1GB GGDDR5 1000Mz, CORSAIR 850W PS, NOCTUA NH-D14,
TRACKIR 5 & TrackClipPro

Thought it would be something like that, thanks for clarification.

I purchased the P-51 on May 29th. Do I need to install the Core Accu-Sim Update v.1.3?

Keep the shiny side up and the dirty side down!

Ret SMSgt Cliff Lord- C-130 Flight Engineer

If you don't have the Spitfire or P-40, then no.

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I like Thunderbolts! (Link to MySpace tribute page)


120th Fighter Wing, Montana Air National Guard

Skycat

Thanks for the info. I do have the P-40 and the Spitfire.

Keep the shiny side up and the dirty side down!

Ret SMSgt Cliff Lord - C-130 Flight Engineer