From: Srinath M <srinath3142@gm...>  20101015 02:15:11

Hi Juergen I am interested in building the Simulink model for a rotary wing plane. My experience so far has been in fixed wing aircraft. Have also worked a bit on AHRS and Kalman filters. I hope i can be of use to the project. I am currently implementing an Eigenstructure assignment based control for a fixed wing business jet. By the way, what sort of sensors do you plan to have on board?(MEMS based?) Regds Srinath On Thu, Sep 23, 2010 at 1:33 PM, jHumt@... <jHumt@...>wrote: > > Dear all, > > a couple of years ago I became interested in rotary wing flight dynamics. > Having tried to get to grips with the theory for some time I have recently > implemented an old helicopter math model of a UH1H of 1973 vintage. The > program had been used in a pilot simulation and had been tested on an analog > computer back then. My program uses matlab/simulink and reproduces the > dynamic system response that was measured and simulated in '73 quite > closely. > > There are seemingly not very many complete heli sims around and I therefore > think that more people might be interested in a helicopter simulation that > comes with a pretty good documentation. The document upon which the program > is based by the way can be found here: > > > http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19770024230_1977024230.pdf > > I would like to set up an open source project to develope this model > further and there are several ways in which I would like to improve this > model: > >  To make this a true open source projekt one would have to do away with > the simulink part of the model and convert it such that the ode can be > integrated by an open source program, either ocatve or perhaps a c++ > implemantation that uses gsl. > >  The report states that the results in the hovering case did not match > measured values quite as good, so here is another field of work to be done. > >  My own interest is in gyro planes, so formulae to calculate rotor speed > for an autorotating rotor would have to be added. To further improve the > model I would like to incorporate a Peters He inflow model and perhaps an > aeroelastic rotor model (and of course a propeller thrust model, but that's > probably the easiest part..;) > > I would like to invite anyone who wants to contribute in any of the fields > of developement to join the effort. > > Since I have no experience in setting up an open source software project > any hints and support to that end are welcome. I have also posted this > thread to the DIY drones site since I have the impression that there are > quite some people active there with an interest in math models. To have a > common platform of communication I would like to propose that anyone > interested in this project posts his/her comments there until a project has > been established. The link to the thread is: > > http://diydrones.com/forum/topics/belluh1hmathsimulation > > Your comments and suggestions on my plan are highly appreciated. > > Cheers, > > Juergen > > PS: at the DIY drones site I have added a screen shot of the simulink > model. > > >  > Start uncovering the many advantages of virtual appliances > and start using them to simplify application deployment and > accelerate your shift to cloud computing. > http://p.sf.net/sfu/novellsfdev2dev > _______________________________________________ > http://autopilot.sourceforge.net/ Development mailing list > https://lists.sourceforge.net/lists/listinfo/autopilotdevel > > 