Aces High Bulletin Board

General Forums => Aces High General Discussion => Topic started by: Yentl on December 23, 1999, 09:03:00 AM

Title: RPM setting?
Post by: Yentl on December 23, 1999, 09:03:00 AM

What does the RPM setting do exactly?  Is it a pitch setting?  It isnt a gauge or it would change with throttle so what is it?

Title: RPM setting?
Post by: Firefox on December 23, 1999, 10:31:00 AM

Propeller RPM, adjust it (when mapped) to the KEYPAD + -.  When its implented you can vary the prop pitch/RPM to save gas (less bite) but will have to remember to put it full forward for combat (more bite more power but uses more gas)


Hope that helps

------------------
Rick "Firefox" Scott
VMF-214 / MAG 11
WB ID: firefx
AH ID: FirefxAT
Have Gun Will Travel

Title: RPM setting?
Post by: Yentl on December 23, 1999, 10:53:00 AM

Ok so it is prop pitch.  Will a lower prop pitch increase engine rpm and allow for faster climbouts and more pitch should allow for faster top speed right?

Title: RPM setting?
Post by: scout on December 23, 1999, 12:56:00 PM

The idea is that the prop pitch autoregulates to keep engine rpm constant.

Aka constant speed propeller.

With engine running at constant (best) rpm wear and tear is reduced.

Of course you have different rpms for best power and best economy.

Title: RPM setting?
Post by: popeye on December 24, 1999, 10:37:00 AM

Engine horsepower is affected by both RPM and MAP.  Maximum RPM and maximum MAP produce maximum horsepower (and maximum fuel consumption).  Low RPM and fairly high MAP produced the best fuel economy.

Some typical engine ratings follow:

  rating    max time    HP      RPM    altitude     MAP
WEP           5 min     1800   3000    sea lvl       76"
takeoff       5 min      1325  3000     sea lvl      54"
MIL          15 min      1100  3000    27,000     52"
max continuous       1000  2600    23,000     43"

(from America's Hundred Thousand, pg. 101)

popeye

Title: RPM setting?
Post by: Pyro on December 24, 1999, 11:08:00 AM

This is not implemented yet, so you should just leave the rpm maxed.  We'll implement it soon and you will be able to configure your rpm settings to match your MP for max fuel efficiency.  If you like to fly around with max power all the time, then it really won't matter to you.  But if you want to squeeze long endurance out of your flights, this will help immensely.



------------------
Doug "Pyro" Balmos
HiTech Creations

"The side with the fanciest uniforms loses."

Title: RPM setting?
Post by: Goombah on December 25, 1999, 06:36:00 PM

Pyro

Will you be implementing Engine Temperature Control? CRP time limitions? Power settings vs IAS for climb, cruise, etc.? Turbo settings?

Goombah

[This message has been edited by Goombah (edited 12-25-1999).]

Title: RPM setting?
Post by: Pyro on December 27, 1999, 09:31:00 PM

Goombah,

Neg to those except for power settings.  The bonus to using correct power settings will be in increased endurance.  That's about as detailed as we'll get with the engine modeling.



------------------
Doug "Pyro" Balmos
HiTech Creations

"The side with the fanciest uniforms loses."

Title: RPM setting?
Post by: Goombah on December 28, 1999, 01:23:00 AM

I understand Pyro... Thank you!

Goombah

Title: RPM setting?
Post by: Duckwing6 on December 28, 1999, 06:43:00 AM

just another thing on the RPM's ... well power does not necessary mean high RPM .. at fast speeds you have to reduce RPM to attain maximum thrust. (try shoving a prop to high RPM in cruise and you'll be hanging in your safety straps  (http://bbs.hitechcreations.com/smf/Smileys/default/wink.gif)

you gonna implement that or is it just:
MAX MAP = MAX RPM = MAX POWER = MAX SPEED?