Three gliders is very feasible, if you have reasonable distance between the= gliders and ropes are under proper tension. The problem is with the tug pl= ane, not the gliders. When I was younger, I did similar thing, not in the air, but in water with = 10 water skiers that created a pyramid (4 levels) when proper speed was rea= ched. Gliders are more 3D, but not more difficult than climbing on the shoulders = of a fellow skier (very challenging) at about 20 mph. Just a thought, Jean-Paul N1JPL > On Jun 29, 2018, at 11:28 PM, Bob Blick wrote: >=20 > Hi Chris, >=20 > A single glider at a time seems a lot less crazy, thanks for the info! >=20 > Bob >=20 > ________________________________________ > From: piclist-bounces@mit.edu on behalf of Chri= s McSweeny=20 > Sent: Friday, June 29, 2018 3:54 PM > To: Microcontroller discussion list - Public. > Subject: Re: [OT] Tow rope with embedded wires >=20 > A bit of what I think is incorrect information there, which may help > explain things. AFAIK only a single glider was towed behind a tug aircraf= t > - having 3 being towed at once seems like a nightmare. Hence those 3 wire= s > are for a single intercom, which makes sense for a standard 2 way system > with a common ground. >=20 > As for such missions not being successful, on the contrary, glider droppi= ng > of troops formed a vital part of the battle of Normandy as well as variou= s > other major offensives. It was a reliable way to drop troops by air - > troops which didn't need to be parachute trained. >=20 > https://en.wikipedia.org/wiki/Airspeed_Horsa >=20 > Chris >=20 > --=20 > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .