Rats! All that nice neat typing of tables is lost. Most of the tables are lost. If I can get some time, soon, I'll try to repost this in a way that it will get through the mail system (I'll probably Word for Windows 6.0 which everyone can read with their word processor or the Windows built in program, WordPad.)
Bedtime, now. Please nag me patiently. Ed Burkhead wrote: > > Jack Lewis wrote: > > > > Is there one published or has anyone ever compiled a > > chart that list the speed that one should get from a given > > prop configuration. Such as: > > > > If anyone has one, or the calc. for > > building a chart, I would like a copy. > > > > Jack > > > > P.S.: The chart above is my best guess. > > Pitch * RPM * .85 (eff). Converted to MPH > > I'm pretty sure your efficiency factor is way off when computing from > inches of pitch to inches of forward travel. > > Paul Prentice published such a table in his 1991 book "Fly About > Adventures and the Ercoupe." His table has checked out pretty well, from > my experience with measured speeds. > > Paul's book is out of print, so I hope he won't feel too bad if I copy > the body of that page. > > For each engine, these are at the "recommended cruising RPM according to > the "Operators Manual" by Teledyne Continental Motors Form X30012 FAA > approved Dec. 1980. > > All numbers @ 5.1 degrees Celsius @ 5,000 feet. > C-75 @ RPM=2275 prop=CL7349 IAS=102 TAS=110 > . prop=ST7351 IAS=106 TAS=114 > . prop=CR7353 IAS=111 TAS=119 -- Ed Burkhead Peoria, Ill. N3802H
<<attachment: winmail.dat>>
