P51 Mustang burns...

[MADCAT]

So Today I Took The P51 for the first flight...
Line up with the runway and start to put some power! all lookin good and sudenly after put 100% Engine Power My P51 Got engine Failure and burns... next time I try to gently takeoff with 75% power and everything went good
So why The P51 burns after 100% engine power? is that because he is so Old or realistic issue?

[Tsarcasm]

Engine gets too hot. If you check your realism settings, you'll see something alone the lines of "Engine stress may cause damage".

[MADCAT]

Originally posted by Useless George:

Engine gets too hot. If you check your realism settings, you'll see something alone the lines of "Engine stress may cause damage".

Why its not happen with other aircraft?

[gspectre]

Originally posted by FoxRoyal:

Originally posted by Useless George:

Engine gets too hot. If you check your realism settings, you'll see something alone the lines of "Engine stress may cause damage".

Why its not happen with other aircraft?

Maybe it's because the other aircraft aren't P-51s. They may end up with other issues.

[Morag]

Originally posted by FoxRoyal:

Originally posted by Useless George:

Engine gets too hot. If you check your realism settings, you'll see something alone the lines of "Engine stress may cause damage".

Why its not happen with other aircraft?

Just because it's not modelled - a lot of the cheaper add on planes won't break if you cook them either.

On the default mustang you'll probably want to pull the prop lever back a little in normal flight to bring the revs down as well as being gentle on the throttle. Prop lever is the little blue one next to the throttle and if you pull it toward the pilot you'll see the RPM gauge (the big one in the middle of the cockpit) start to go down.

[JohnnyBoythePilot]

The P-51 in FSX is modified for racing and it's engine can easily become cooked at high power settings without ADI (basically water injection that cools the engine). To enable ADI, look for the switch in the cockpit or press Shift+X. With ADI enabled you can go max power.

While it is a nice realistic touch to the P-51 racer, I think the engine breaks too easily. You can go in the realsim tab in settings and disable engine stress/damage.

[MADCAT]

Originally posted by JohnnyBoythePilot:

The P-51 in FSX is modified for racing and it's engine can easily become cooked at high power settings without ADI (basically water injection that cools the engine). To enable ADI, look for the switch in the cockpit or press Shift+X. With ADI enabled you can go max power.

While it is a nice realistic touch to the P-51 racer, I think the engine breaks too easily. You can go in the realsim tab in settings and disable engine stress/damage.

Thanks ! I will stay with Max realism:) the question is where the ADI Switch loceted? And should I Active it before takeoff or after right before go 100% power?

[JohnnyBoythePilot]

The ADI switch is on the lights panel. The light panel is below the gauges and radios. It's almost directly under this red pull-handle. ADI should be on before you go full power. When cruising without ADI, keep the throttle around 50%-60% and no higher unless ADI is on.

[MADCAT]

Originally posted by JohnnyBoythePilot:

The ADI switch is on the lights panel. The light panel is below the gauges and radios. It's almost directly under this red pull-handle. ADI should be on before you go full power. When cruising without ADI, keep the throttle around 50%-60% and no higher unless ADI is on.

Alright Thx!

[JohnnyBoythePilot]

No problem!

[Nightmare1964]

Originally posted by FoxRoyal:

So Today I Took The P51 for the first flight...
Line up with the runway and start to put some power! all lookin good and sudenly after put 100% Engine Power My P51 Got engine Failure and burns... next time I try to gently takeoff with 75% power and everything went good
So why The P51 burns after 100% engine power? is that because he is so Old or realistic issue?

I would say that is a very realistic issue with all aircraft to a certain extent. You have to manage your engine.

What does your checklist say about the take off procedure?

I know the P51's were excellent performers at high altitude, so mabe that has an adverse impact at the lower altitudes when you are at lower speeds. The RR Merlin engines were very powerful so I would not doubt you could get airbourne at 75% throttle.

I would do the following: Do the T/O at 75% at VX speed to clear obstacles, then retract flaps when over tree height, lower the nose and speed up to cruise climb, instead of XY speed, to keep as much cooling to the engine as possible. When at the chillier altitudes, you could open the throttle to higher RPMs with less chance to cook the engine.

Monitor your engine guages, such as oil temp and pressures, even the EGT and MP's during the climb. If you are getting close to red lining any of these, level off and ease back the trottle til they stabilize.

[JohnnyBoythePilot]

Originally posted by Nightmare:

Originally posted by FoxRoyal:

So Today I Took The P51 for the first flight...
Line up with the runway and start to put some power! all lookin good and sudenly after put 100% Engine Power My P51 Got engine Failure and burns... next time I try to gently takeoff with 75% power and everything went good
So why The P51 burns after 100% engine power? is that because he is so Old or realistic issue?

I would say that is a very realistic issue with all aircraft to a certain extent. You have to manage your engine.

What does your checklist say about the take off procedure?

I know the P51's were excellent performers at high altitude, so mabe that has an adverse impact at the lower altitudes when you are at lower speeds. The RR Merlin engines were very powerful so I would not doubt you could get airbourne at 75% throttle.

I would do the following: Do the T/O at 75% at VX speed to clear obstacles, then retract flaps when over tree height, lower the nose and speed up to cruise climb, instead of XY speed, to keep as much cooling to the engine as possible. When at the chillier altitudes, you could open the throttle to higher RPMs with less chance to cook the engine.

Monitor your engine guages, such as oil temp and pressures, even the EGT and MP's during the climb. If you are getting close to red lining any of these, level off and ease back the trottle til they stabilize.

No only the P-51 has live engine damage. 75% is pretty much max for the P-51 without ADI but even then sometimes the engine catches fire. Maybe there were other factors causing it or maybe I just wasn't managing the engine good enough. :p (Still a non-complex GA guy)

[Nightmare1964]

The name of the game is to keep the engine cool. Keep the speed up to keep the airflow to the engine high, thereby cooling it more effectively, and keep the RPM's down to minimize heat. Look at the VX speeds or the T/O speed in the POH or checklist. If you only need 50% throttle to achieve this then so be it. Not all aircraft require full throttle to take off, and knowing the legendary performance of the P51, it has a huge excess of thrust/engine power.

The P51 was designed as a high altitude fighter for the European theatre, for ops above 20000ft, which gets very cold. I would say you can throttle up over 75% at these higher altitudes without cooking your engine.

Look for other factors that may increase temps like Cowl Flap and/or other vent settings.

I have to manage my engine temps in my RW plane. The engine is an air cooled one, so I have to monitor and manage the engine temps a whole lot more than other types I've flown.