Flight, June 1939
STANDARD SAILPLANE for OLYMPIC GAMES
THIS year, for the first time, gliding is included as one of the competitions in the Olympic Games, which are to take place in Finland this summer.
It was considered necessary to evolve
a standardised type of sailplane in this competition, and, after the F.A.I. had drawn up the requirements, Germany, Italy and Poland submitted five different types, which were tested by well-known pilots. After analysing the result the F.A.I. decided to adopt the "DFS-Meise," designed and constructed by Hans Jacobs, chief engineer of the Darmstadt Gliding Institute.
The machine is a high-wing cantilever of 15 m. (49ft. 4in.) span and 15 sq. m. (161 1/2 sq. ft.) wing area. Both fuselage and wing are fairly conventional. The wing spar is of double T section and the forward covering is of plywood, the rear being covered with fabric. The inner wing is of Gottingen 549 section, while the outer section is Gottingen 676.
A particularly neat feature is the arrangement of the spoilers for steepening the gliding angle. As will be seen from the sketch, a simple system of levers extends them both above and below, the wing, in which they normally lie completely flush.
Test flights have given a gliding angle of 1 in 25, a sinking speed of 0.67 m/sec. (132ft./min.) and a stalling speed of 50 km/hr. (31 m.p.h.).