What's that whistling sound?...

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Author	Topic: What's that whistling sound?...
jedi Pilot	posted 02-13- 02:43 PM Caution: falling Zero parts! Development continues... ------------------ --jedi-- [This message has been edited by jedi (edited 02-13-2000).] [This message has been edited by jedi (edited 02-13-2000).] [This message has been edited by jedi (edited 02-13-2000).] IP: Logged
Zoycite JAG	posted 02-13- 02:48 PM whistling Death Very nice! ------------------ Zoycite {GS} GUNSLINGERS visit The War Paint Factory IP: Logged
Jeeves Pilot	posted 02-13- 03:15 PM Very nice, jedi!! I may have to make a new campaign when that one comes out...can anyone say Marianas Turkey Shoot?!! I knew you could . IP: Logged
AE71_INFERNO Pilot	posted 02-13- 03:42 PM I've been waiting for this a real long time, when do you think I can get my hands on it? do the wings fold and the canopy open? ------------------ Watch For Falling Focke-Wulf's [This message has been edited by AE71_INFERNO (edited 02-13-2000).] IP: Logged
Smitty Pilot	posted 02-13- 04:17 PM As a huge fan of the JR's... and also the Skull and Bones I applaude you on this outstanding development jedi Smitty IP: Logged
Jerry Pilot	posted 02-13- 05:39 PM Beautiful! My favorite fighter. IP: Logged
Jaguar Pilot	posted 02-13- 07:55 PM OMG!!! That looks AMAZING!!!!!!!!........... need a beta testor? ------------------ Cheers! Jaguar The FS Hangar IP: Logged
jedi Pilot	posted 02-13- 08:10 PM Wings fold, canopy opens, hook lowers. Also remapped RPM and manifold pressure to follow throttle instead of just showing full power all the time. I'll try to put a (very) rough beta up maybe this week sometime. Want to at least get the distant .lods looking like a Hog instead of a horse Seems to be able to fly off the runway with too little power set. Maybe someone can figure that out... Also flies a little too nose-low with full flaps... Other than that it acts pretty much like it should I think. Haven't played with very much on the FM other than engine and prop and moving inertia boxes around so it's pretty Mustang-like at the moment. ------------------ --jedi-- IP: Logged
Razer Pilot	posted 02-13- 09:21 PM Thats a great plane Jedi. Can't wait to have some great missions online with the Zero's. and i can't wait to put some paint schemes. Been working on paint schemes for a new plane coming out and i'm having a blast. ------------------ ======================= Tony "Razer" Martin IP: Logged
Tailslide Pilot	posted 02-14- 02:01 AM Looks great!! Excellent work. Didn't most allied fighters operate on constant rpm variable pitch? TS IP: Logged
Laika 801 Pilot	posted 02-14- 04:18 AM Good work !!! IP: Logged
roadtoad Pilot	posted 02-14- 04:44 AM Looks great! If the FM comes out non-uber realistic, I've a hunch this might be the contest winner IP: Logged
jedi Pilot	posted 02-14- 08:44 AM TS-- I think the prop pitch and engine RPM were both settable, much like a current light twin ("variable pitch, constant-speed" props). You set the RPM and pitch for the condition you wanted, i.e. cruise, combat, takeoff, etc. Then the throttle controlled the manifold pressure, and the prop maintained its set RPM by varying the blade angle. Without being able to actually vary the blade angle in the sim (although I have a couple of ideas on this) the best we can do is to vary the RPM. This means the RPM and manifold pressure would be linked, instead of being set separately as in a real plane. ------------------ --jedi-- IP: Logged
Tailslide Pilot	posted 02-14- 12:39 PM Hope this is helpful to you.. "In principle the DB601 and 605 series engines were the same as the Allison or Merlin, except they were inverted and had direct fuel injection; otherwise they were 12-cylinder, 60 degree Vee, glycol cooled engines. The prop was a 10.2 foot, 3 blade variable pitch mechanism of VDM design. here is another major difference between their design approach and ours. The pitch on the Me-109 prop could be set at any value between 22.5 and 90 degrees, a visual pitch indicator being provided for the pilot. There was no provision for automatically governing the rpm. We did just the opposite, using a constant speed governor and flying by a constant tachometer indication of rpm. For any flight condition the rpm remained constant. We did know, or care, what the blade angle was." The Best of the Breed Airpower, July, 1976 Vol. 6 No. 4 by Col. "Kit" Carson IP: Logged
jedi Pilot	posted 02-14- 11:09 PM Hmmm. Not quite sure that's entirely accurate. On the C-130, for example, the engine is always running at 100% RPM, and the prop blade angle is changed by the throttle. We don't, in general, know what the blade angle is (although it can be determined from the tech data). That's definitely a "constant speed" prop. However, another type of "constant speed" prop is simply one with a regulating mechanism to maintain its RPM once an RPM is selected. I believe the Spitfire prop worked this way. Set an RPM, and then as you varied the boost, the RPM would remain "constant" while the blade angle would change. Again, the actual blade angle is unknown. The Germans allowed you set the actual blade angle, and probably flew the airplane based on blade angle settings. You can also see this in some allied reports, where the pilot talks about setting "coarse pitch" for combat. I don't know what the SOP for US planes was, but I suspect they generally had RPM/Boost combinations for certain flight conditions. I don't think any of the engines were constantly running at 100% all the time like a C-130 though. Certainly for takeoff and combat, but probably not for climb and cruise. Once you set the RPM though, it would remain "constant" no matter what THROTTLE setting you used, as the throttle controlled not RPM, but manifold (boost) pressure. The RPM was controlled by the propeller (feather) control. Has anyone seen an actual pilot's manual for the US planes? How did they set power for manuevers? RPM and boost, or just boost? Hehe and let's not even get into mixture... ------------------ --jedi-- IP: Logged
juzz Pilot	posted 02-15- 02:38 AM US/UK planes had different MAP/Boost and RPM settings for various flight conditions(Combat, Cruise, Climb, etc). Go to www.zenoswarbirdvideos.com and check out the videos and charts there. EXAMPLE: P-47 with R-2800-21. Takeoff: 2700 RPM, 52in MAP, 2000hp, 275 Gal/hr. Maximum continous: 2550 RPM, 42in MAP, 1625hp, 210 Gal/hr. Economical maximum: 2250 RPM, 32in MAP, 1200hp, 105 Gal/hr. IP: Logged
Kraftwerk Pilot	posted 02-15- 07:47 AM This puzzles me. In the P-39 video they state various manifold pressures for different operating situations. But as far as I know, the P-39 didn't have a blower. Are they talking inches of vacuum here or what? IP: Logged
Tailslide Pilot	posted 02-15- 10:09 AM The fellow shot down 14 enemy planes in WW2, I have the whole article if you want it's pretty good. IP: Logged
Gunner Pilot	posted 02-15- 04:40 PM Ok, Everybody pitch in and get this plane into service ASAP! The Japanese fleet is coming down the slot and all planes are needed in the air! She looks great. How did I miss this post? ------------------ (Kill Or Be Killed) -=BAB=- Gunner IP: Logged

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