[Dixiecapt]

The Title says it all, I always tend to have the p-80's Engine Cut out on me in Flight.

I've noticed that the SI planes will seem to Rev their Engines up and Down while In flight. is this the Key?

Thanks

[BigHead_RS]

I have the same trouble in a lot of flies. When the engine are overheat, he cut and the engine instruments don

[Coatimundi]

Ive noticed this alot of times as well, it happens when lowering the throtle, like after the engine overheat indicator comes up, I think flying with a lower throtle might help.

[Strike]

This is because most likely the P-80 didn't have a modern fuel control unit that manages engine compressor surges\stalls. You see, if you increase throttle too fast, too much fuel will ignite in the combustion chamber causing the airflow to change direction and try to exit the intake instead of the exhaust. This sometimes leads to blowing the compressor to pieces, or just trying to reverse the compressor rotation, causing it to stop and ruin the entire cycle.

On the other hand, if you slow down too quickly, you cut down the amount of fuel to burn in a plane going 700 km\h, the combustion chamber is literally going to flameout (too much wind to maintain a constant fire). Modern jets have ECU's (Engine Control Units) or FADEC's (Full Authority Digital Engine Controls) to manage fuel flow during flight. These units take in to consideration, aircraft speed and internal engine data and such to make sure flameouts don't happen no matter how fast you move the throttle. I.E : A pilot is going in 800 km\h and sets throttle to Idle very fast. The engine control unit says "OK, pilot wants to slow down the RPM to IDLE, but we are currently travelling too fast to perform this safely. Therefore I must ease the fuel flow in accordance to aircraft speed.. once the plane is flying slow enough (or has a stable pressure ratio inside the engine) it may operate at IDLE throttle without flaming out.

Now, the old planes like P80, it's much like blowing out a normal fire. If it's a big fire (much fuel) you'll need a lot of wind to blow it out. Now, keep the same wind and replace the fire with a candle.. Can you guess the results?

I hope this was understandable

P.S. Just to give you an idea of how bad the first engines were (like for the me-262) they had to be changed every 3-4 flight hours because the combustion chambers were incinerated and meltet away even during normal operation. Nowadays, engines are rarely opened\disassembeled for maintenance unless there is a case of foreign object damage.

[OPIEMK2]

The Title says it all, I always tend to have the p-80's Engine Cut out on me in Flight.

I've noticed that the SI planes will seem to Rev their Engines up and Down while In flight. is this the Key?

Thanks

I have found that in order to keep from having the engine "cut out" on you the following works well for me:

-Keep throttle movements both slow and to a minimum if you can. I usually keep the throttle at 90% and leave it there. The P-80 is a pretty good energy fighter.....instead of throttling up and down alot, try maneuvering to stay on someone that you are overtaking, or B&Z.

-Keep your speed up. If your speed drops to below a certain area you run the risk of a flameout/compressor stall....neither of which is a good thing to have happen in a fight.

-avoid really harsh maneuvering or hard pulls....it can disrupt the airflow and cause a flameout.

Dealing with a flameout is not terribly hard as long as you have some altitude to build some airspeed. I just nose over and bring the speed up to about 175mph and restart....it may take a couple of tries for the engine to light off, so keep your speed up, and keep throttle at idle till it lights, then bring the power up slowly.


Strike is correct on the technical side of things....he speaks/types much better then I do.

[HH Enforcer]

Ive got more time in the P-80 than any other plane in the many yrs I've flown this sim, mainly since I have been working on my Redstar/Whitestar 1947 cmpn for 19 mos. I've learned that the above it correct, but I've also gotten into hard turning fights with other jets and managed to keep the engine going. I try to keep it between 88 and 95% when I need speed. 95% will overheat much quicker than 93%, but it really depends on your speed. Keep speed up and you can maintain around 93% for long periods.

If you start to overheat, you can put the nose down to get speed and it will cool it, and you can back off just a bit on the throttle if it doesn't cool very quickly.

I take off at no more than 88% and back off to 85 until I get some speed up, unless it's a scramble misn, and then I get speed up before I start climbing.

You can also do air starts but you need to run up the throttle to near 100% before you start and then back down.

Just don't advance or retard the throttle very quickly.

It's my favorite ride in the sim, but it requires a bit of flying to get used to it.

Hopefully I will release the beta of my cmpn in a few weeks. Jets are a real blast if you learn them.

For what it's worth, this is a thread on my cmpn at the zoo. A couple of hte misns I illustrate are in a Corsair, but most are in the P-80. There's a fair number of human flown birds in close in dogfights. It can do it.
http://forums.ubi.com/eve/forums/a/tpc/ ... 8791000676

[Dixiecapt]

Wow,

What Responses! 8)

Thanks Peoples!

:wink:

[RichardHed]

just my two cents - and to affirm what has already been said;

The Me-262 don't throttle up too fast, throttle down fast is OK (within reason)

The YP-80 don't throttle down too fast, throttle up fast is OK (within reason)