Re: [Jsbsim-devel] Creating a quadcopter/UAV simulator

[David C. <dp...@gm...>]

Others have done this, and are doing it now.  In general the bigger the
vehicle the better results you'll get.  You can model a small vehicle, but
unless you increase the iteration rate of the simulation to some suitable
value you'll get excessive accelerations.

The electric motor + propeller should work.  Some considerations:

1)  IIRC the electric engine model has no internal friction or mass.  It
just produces power linearly with throttle.

2)  You'll need Cp-versus-J and Ct-versus-J tables for your propeller.  You
may have to estimate these on your own, but I believe there exists
propellers designing software that may help.

- Dave

On Sep 22, 2016 10:02 AM, "Fran gonzalez vidal" <go....@gm...>
wrote:

> Hi,
> I'm a computer engineering student working on my final project which was
> to be a drone/quadcopter (from the small toys to "bigger" things like the
> amazon quadcopters or similar) simulator.
> After looking for a few days into the JSBSim documentation and in several
> forums I'm not so confident in the viability of this project so I would
> like to know whether JSBSim looks like a FDM that can be used in a project
> focused mainly on small-ish aircrafts, with no fuel lines (as far as I
> understand this seems to be a problem) and with electrical engines which
> would be the only way to control them (no flaps or anything like that).
> What I'm looking for is the opinion of people with some experience with
> JSBSim on whether this seems doable and, if it is, a push in the right
> direction would be much appreciated.
>
> Thanks in advance
>
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