Propeller RPM

[LcSummers]

Hi,

 

i searched for the keys wich engages the Propeller RPM. Didnt found it.

 

I want to put the RPM Controller on my throttle. Does somebody know if this is possible at all?

 

Thanks :thumbup:

[gabuzomeu]

Hi,

Yes there are keys to map (called Engine power increase/decrease) and an axis (Engine Power).

This is a must have.

[LcSummers]

Thanks buddy!

 

This is great I will try it now!!!!

 

 

S!!!!!:thumbup:

[sonic]

Anyone found the key name of the microphone switch?

[gabuzomeu]

"COMM Communication Menu" is the name. Not so easy to find :-)

[sonic]

Thank you!

[flightace37]

@LcSummers:

 

Sounds like you found it already, but if not:

 

What you're looking for may actually be titled Engine RPM Increase/Decrease under the Flight Controls section of "P-51D Real". At least that's what it says on my config screen. This is definitely something you want to map to stick buttons or an axis.

[skouras]

Anyone found the key name of the microphone switch?

 

is the key on the keybord which is located under the backspace and above enter that one \

[LcSummers]

@LcSummers:

 

Sounds like you found it already, but if not:

 

What you're looking for may actually be titled Engine RPM Increase/Decrease under the Flight Controls section of "P-51D Real". At least that's what it says on my config screen. This is definitely something you want to map to stick buttons or an axis.

 

 

Thanky buddy,

 

yes found it and tried it. Really cool. It works fine. :thumbup:

 

 

LC

[W1ndy]

So how is Engine RPM increase/decrease different from Throttle ?

[flightace37]

Throttle controls manifold pressure. The RPM control sets the RPM that the governor tries to maintain using the variable-pitch inputs to the propeller. This forms what is generally known as a constant speed propeller system.

 

See Wiki: http://en.wikipedia.org/wiki/Constant_speed_propeller

[BSS_Vidar]

Prop pitch controls RPM, Throttle controls power settings.

 

\/

[leafer]

Basically you cruise with prop RPM in the green, and firewall it in a fight, right?

[flightace37]

Not necessarily. You use different RPMs for different flight conditions. Running 3000 RPM above 300 mph actually produces worse performance than say 2700. Test it out; you'll achieve higher speeds in straight and level flight if you reduce the rpms, up to a point.

 

If you're in a dogfight, generally run max RPM as you start a hard climb, and reduce it again as you pick up speed in a dive. You'll eek a little more performance out of the engine that way.

 

Keep in mind that the max continuous power setting is 2700 rpm with 46" of mercury. They'll eventually add engine degradation as a result of running high power for too long, so get used to using 3000 RPM + max throttle only in limited situations, and only for a limited time. The specific limits should be in the manual.

[leafer]

Thanks. I should read the manual.

[flightace37]

No problem. Some of this stuff isn't in the manual. You pick it up from experience and good instruction over time.

[Griffin]

Shouldn't these charts be in the manual? Real flight manuals have detailed charts which show which settings to use for example for the most economic flight at a certain altitude and speed.

For me it still creates problems in understanding how to manage the engine to get best out of it in different situations even though I've flown prop sims for years but the lack of manuals leaves a big gap in flying them right.

[flightace37]

Nono. The charts are in the manual. The combat tips are not. The charts are also posted on a plaque on the right cockpit wall. Other limitation charts are posted elsewhere around the cockpit.

[Griffin]

Aren't those more of limitation charts for example Max Cruise and not minimum fuel consumption cruise etc?

 

EDIT: I'd like to see how a cruise performance chart looks like for P-51 and generally get the information that a flight instructor would give you for a type rating.

Edited May 5, 2012 by Griffin

[flightace37]

@Griffin:

 

You're right. The DCS manual only has maximum limit charts. The P-51 operator's handbook has what you're looking for, but I'm not yet sure if I can redistribute it or recreate the content.

[Griffin]

Found a Pilot Training Manual with some tables, need to study a bit. Quite familiar looking graphics there, eh? ;)

 

http://www.scribd.com/doc/34811808/North-American-P-51-Mustang-Pilot-Training-Manual

 

Might actually fall for the Pony. :D

[Luigi Gorgonzola]

Found a Pilot Training Manual with some tables, need to study a bit. Quite familiar looking graphics there, eh? ;)

 

http://www.scribd.com/doc/34811808/North-American-P-51-Mustang-Pilot-Training-Manual

 

Might actually fall for the Pony. :D

You could even buy its reprint ;)

 

http://www.periscopefilm.org/index.php?page=shop.product_details&flypage=flypage.tpl&product_id=77&category_id=32&option=com_virtuemart&Itemid=1

[flightace37]

That's the one. I guess it's public domain now. Cool.