Volume 8 No 3 Jun 1957.pdf - Lakes Gliding Club

Performance of the AV-22 Two-Seaterby Charles FauvelT HE e'xamination by the Flight TestingCentre of the performance of this twoseatersailplane has confirmed the polarcurve (j)f velocities given herewith, whichshows that the AV-22 corresponds well toan all-purpose biplane: for dual controltraining, ab inirio, advanced and highperformance;and, if flown as a singleseater,for first solo, training, and highperformance with suitable equipment,including ballast if desired. It is normallyfurnished with radio, and optionally withrespirator.With the first model, NO. 01, a glidingangle in the region of 1 in 26 was attained(actually 1 in 25.6); this value will beexceeded in No. 02, which will incorporatesome refinements and will shortly put in anappearance. Its drag, moreover, remainsIc;ss than that ofconventional single seatersof 15 m. span and 5 m. length.The instructor's seat ,is raised nearly30 cm. (I foot) at the centre of gravity, andmoreover gives him exceptional visibilityand comfort, while he makes use of thesingle instrwnent panel in front.Thanks to the purchase premium, themachine will sell at about a million francs(£1,015) only to the clubs, complete inflying order with basic equipment (supplementaryequipment also benefits fromthe premium).Examination ofthe recording instrumentshas shown that the maximum speedattained with two up by M. Fauvel and hismechanic M. Herve, during the high speedtrials carried out for the Flight TestingCentre, was actually 270 km/h. (168 m.p.h.);this represents the highest controlled speedever attained iD France with a glider, and inthe same flight a pull-out of 5g was carriedout, likewise the highest measured."AV-22", rhe twoseaterversion ofM. Fauvel'sfamous''jfying wing".(Block reproduced bycourtesy of"TheAeroplane".)-136-