Jon Berndt wrote
> Sent: 08 July 2004 13:29 > To: FlightGear developers discussions > Subject: RE: [Flightgear-devel] status of aircraft carrier > > > > In my day they consisted of a pulley system forcing hydraulic fluid > > through orifices. These orifices were adjusted to provide the right > > decelerating force for each aircraft type. > > > > I seem to recall that a disk brake system was proposed. I > don't think > > that this was implemented in Royal Navy carriers, but may have been > > for modern US carriers. > > An aircraft, upon landing on a carrier, does not appear to > slip backwards at all under the force of the arresting wire. > It seems like a one-way spring. A one way spring - a new concept in physics :-). Perhaps more like a one way damper on a car suspension. Seriously - did you mean a linear spring where the force that stretches the spring is in direct proportion to the amount of stretch? That would not be quite correct - the arresting force was constant in the first part of the pull-out, and I think, but can't quite remember, that the orifices closed towards the end of the pull-out to provide a soft stop. There was enough tension in the system just to impart a little rearward motion to the aircraft. Thus was enough to disengage the wire from the hook, which was then raised, and the aircraft was free to taxi clear. Regards Vivian _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
