ivo Posted January 23, 2014 Posted January 23, 2014 Hi, is there the keyboard button for increase and decrease the propeller ( black lever with P ) ? Bye cpu:I7-6700k Z170 16GB Ram DDR4 Gtx 1080 8Gb DDR5 11GBs SSD 500 Gb 2 HDD 1Tb Evga supernova G2 850w Case Bequiet series 800 Silent base Win 10 pro 64 bit My wishlist: F-35/B-17G/F4U Corsair/Yak-3/P-40B Tomahawk
Blech Posted January 24, 2014 Posted January 24, 2014 Hi, Engine RPM Decrease PageDown Engine RPM Increase PageUP You can see the default keyboard-commands here Options \ Controls \ P51D Real \ ALL or Axis, panels, ...
ivo Posted January 24, 2014 Author Posted January 24, 2014 Ok thank now I have foound it... I locking for increase propeller instead engine rpm.... cpu:I7-6700k Z170 16GB Ram DDR4 Gtx 1080 8Gb DDR5 11GBs SSD 500 Gb 2 HDD 1Tb Evga supernova G2 850w Case Bequiet series 800 Silent base Win 10 pro 64 bit My wishlist: F-35/B-17G/F4U Corsair/Yak-3/P-40B Tomahawk
Whiplash Posted January 24, 2014 Posted January 24, 2014 Unless I am missing something here. The Propeller pitch is automatically controlled by the governor, so the pilot can set the desired RPM and the governor automatically adjust to pitch to meet the RPM setting. I do not believe there is an override for this in the mustang like there is in a 109. I'm sure someone will correct me if I'm wrong though. [sIGPIC][/sIGPIC] "Adulthood is like looking both ways before you cross the street and then getting hit by an airplane." Dogs of War Dedicated WWII Server Thread
Lo-n-Slo Posted January 24, 2014 Posted January 24, 2014 Unless I am missing something here. The Propeller pitch is automatically controlled by the governor, so the pilot can set the desired RPM and the governor automatically adjust to pitch to meet the RPM setting. I do not believe there is an override for this in the mustang like there is in a 109. I'm sure someone will correct me if I'm wrong though. Yes, its kind of a picky distinction, but technically the P lever sets Propeller RPM rather than engine rpm. The technical distinction is important because the speed control is achieved by the prop governor that varies the pitch of the blades rather than by adjusting any engine operating parameters (such as fuel, throttle or ignition settings). As there is a direct geared connection between the prop and the crankshaft, engine RPM is directly related to prop RPM (by the ratio of the gears in the nose case), so by controlling one you effectively control the other. cheers Lo
Swoop73 Posted January 26, 2014 Posted January 26, 2014 RPM is prop pitch control, yes. The Mustang is geared just about 2:1, i.e., 3,000 RPM on engine "What you see on tachometer" is close to 1,500 RPM on the prop. I know many of you know this but Prop RPM needs to stay below the speed of sound for efficiency. Then it's all about prop diameter. A Piper Cherokee 140 might be at full power at 2,700 RPM. The engine not being geared would be the same. The prop tips based on diameter, would not be all that far from sonic speed. The Mustang's 450 lb, 11 foot prop approaches this tip velocity at around 1,500. That's why almost all big, high horsepower prop assemblies are geared to the engine if it's a recip. These are just round numbers, folks. If someone finds the P-51D in 1944 had an 11 foot, 5 1/4 inch prop....Go easy on me. :-)
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