Hi Wim, very interesting data. I have googled to find out, which values are correct, at least for the rotor diameter there is many data on the net. It seems, that in the version in cvs some data are from the ch53d (or are there different ch53e variants?). Very surprising for me are the cyclic/ collective data with approx 20+18=38 degree maximum incidence of the main rotor. Unfortunately I do not have any information about the airfoil (SC1095). One important point: the main rotor and the tail rotor are twisted. Do you know, where the incidence is measured?
Do you have such data for other helicopters in your book (bo105 (but here the actual data should be correct), ec135, ec145, ch47d, s76c, little nellie)? Thank you, Maik wim van hoydonck schrieb am 18.12.2006 15:49: > Hi there, > > > Some data for the CH53e yasim model, taken from Prouty [1], p. 699. > > Looking at the data in cvs, rotor diameters and chords should/could be > changed, just like control input ranges for the main and tail rotor. > > > Weights (lb): > - Empty: 33009 > - MTOW (internal payload): 69750 > - MTOW (external payload): 73500 > - Fuel capacity (norm): 6682 > - Fuel capacity (aux): 8450 > > Engines: > - Type: General Electric T64-GE-416 > - Number: 3 > - Max T.O. rating: 13140 > - Max usable power: 11570 > > Rotor Parameters: Main Tail > - Radius (ft): 39.5 > 10 > - Chord (ft): 2.44 > 1.28 > - solidity 0.138 > 0.163 > - No. of blades: 7 > 4 > - Tip speed (ft/sec): 732 > 733 > - twist (deg): -20 > -8 > - equiv. linear hinge offset ration (e/R): 0.063 0.043 > - Airfoil: SC1095 > NACA 0015 > - Collective range (deg): -1.4 to 19.6 -10 to > 24 > - Longitudinal cyclic range (deg): -8.5 to 18.0 - > - Lateral cyclic range (deg): -9.8 to 6.1 - > - Polar moment of inertia (slug ft^2) 51800 181 > > > Greetings, > > Wim > > > [1] Prouty, R. W., Helicopter Performance, Stability and Control > > > ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
