A winch launch with a high performance twin seated glider (like the
www.eta-aircraft.de]eta[/URL]) burns approx .4 kg of fuel and results in about 300 m altitude. This can be used for about 20 km gliding without thermals, so 40 passenger kilometers with .4 kg fuel makes .01 kg per passenger kilometer as worst case.
World record is over 2000 km gliding, if started with a winch launch this makes .0002 kg per passenger kilometer.
