Glasflugel H303 Mosquito
Designed by Eugen Hanle for the 15 m racing class, the Mosquito is a development of the Club Libelle and differs from the earlier Hornet chiefly in having carbon-fibre mass-balanced ailerons, and a new flap/spoiler/air brake system.
Design of the Mosquito was started in the summer of 1975 and the Mosquito's construction is generally similar to the Hornet, except for the ailerons, and up to 253lb of water ballast can be carried. The structure is fiberglass, with CFRP wing box spar and skin. The new flap/air brake system was developed jointly by Klaus Holighaus and Eugen Ha'nle; conventional camber-changing trailing edge flaps act in conjunction with spoilers immediately ahead of them in the wing upper surface to act as a trailing edge air brake. The normal flap lever lowers the flaps and droops the ailerons in conjunction with them, while there is a second lever for the spoilers or brake flaps. As this is pulled, the spoilers start to open and further backward movement movement of this lever moves the flaps further downwards as well as opening the spoilers further. The latter can be opened or closed at any time like the more conventional Schempp-Hirth type air brakes fitted to other sailplanes. The tailplane at the top of the fin is fixed incidence, and the elevator has spring trim. The retractable unsprung monowheel has an internally expanding brake, and there is a fixed semi-recessed tailwheel. The one-piece canopy is raised by the pilot to hinge forward onto the nose tip for exit.
The prototype first flew in March 1976 , it was the first type to go into production after the reorganisation of the Glasflűgel company under the name Holighaus & Hillenbrand GmbH & Co K.G following the death of its Director, Ing Eugen Ha'nle, on 21 September 1975. Dipl-lng Klaus Holighaus, the Director of Schempp-Hirth and Herr Hillenbrand of Glasflűgel formed the present company, continuing to market them under the Glasflűgel name.
A total of 90 Mosquitos had been delivered by January 1978.
Glasflűgel began building the prototype of a new version, the Mosquito B, in September 1977. This differs from the standard Mosquito in having glassfibre reinforced plastic ailerons, no fuselage/wing root fairings, a reduced wing span and a tailplane of reduced span. Empty weight is reduced to 518lb but maximum weight and performance are the same as the standard Mosquito. First flight was on 24 March 1978 and about 90 Mosquito Bs had been delivered by January 1980.
Mr Humphrey Dimock, who runs the Royal Naval Gliding Club at Lee-on-Solent in Hampshire, has fitted a Mosquito with a 36-cell solar panel in the cockpit to charge a German Dry-Fit 14 volt battery at a rate of 0.46A when in sunlight; spare capacity generated by the panel can power blind flying instruments if necessary and there is a cut-out to prevent overcharging. The panel weighs only a few ounces and is mounted directly in front of the pilot edge-on to his line of sight so as not to restrict visibility. Following the success of this panel Mr Dimock planned to fit 10 solar cells in a 5ft x 3.5in strip along the top of the fuselage under a Perspex fairing.
Glasflugel Mosquito B
Wing span: 15 m / 49.2 ft
Wing area: 9.85 sq.m / 105.5 sq.ft
Length: 21 ft 0 in
Height: 4 ft 7 in
Empty Weight: 235 kg / 518 lb
Payload: 215 kg / 474 lb
Gross Weight: 450 kg / 992 lb
Wing Load: 45.68 kg/sq.m / 9.6 lb/sq.ft
Water Ballast: 100 kg / 220 lb
L/DMax: 41.2 at 71 mph
Max speed: 155 mph (smooth air)
Max aero-tow speed: 93 mph
MinSink: 0.58 m/s / 1.9 fps / 1.13 kt at 58.5mph
Aspect ratio: 22.8
No. Built: 300