Home Video: VTPR session by Erwan Laurans Video: VTPR session by Erwan Laurans By -Pierre Rondel June 28, 2011 0 This is the latest video I did, last week-end: Erwan Laurans flying his Sonic at the Banne d'Ordanche (Auvergne) while waiting for the wind during a F3F competition. His Sonic is 1.9 kg only. This is the typical VTPR sailplane. Newer Older