BGA glider data sheet - Duo Discus Data source: Flight & maintenance manuals Date of issue: 1994 Manufacturer: Schempp Hirth, Flugzeugbau GmbH, Postfach 1443, D-73222 Kirchheim/Teck, Germany Phone: 00 49 7021 7298-0 Fax: 00 49 7021 7298-199 www.schempp-hirth.com UK Agent: Southern Sailplanes Phone: 0148 871774 Fax: Link to mandatory mods: Weighing Data: Kg Max weight (take off & landing) 700 with water Max weight dry 660 Pounds 1543 1455 Control deflections in mm Up Down Distance hinge to measuring point Ailerons 71 ± 5 36 ± 5 176 Max free play ±3 Max wing water 198 435 Elevator 52 ± 4 52 ± 4 170 ±3 Max fin water 11 24 Rudder Left & Right 190 ± 20 410 Max weight of non lifting components (everything except wings) 440 970 Max seat load (front & rear seats) 110 242 Controls Moments & Weights weights Kg Rudder 4.8 to 5.9 Moments cm Kg -10 to -7 mm Inches Elevator half (without fitting) 0.8 to 1.0 3.65 to 4.50 Forward C of G limit (aft of datum) 45 1.77 Inner aileron 4.3 to 5.9 8 to 10 Aft C of G limit (aft of datum) 250 9.84 Outer aileron 0.54 to 0.7 1.6 to 2.0 Front pilot position (forward) Rear pilot position (forward) 1400 290 55.12 11.42 Exceeding these weights by 15% is allowable because of additional mass balance. Moments must be as above. Weighing Longitudinal datum: Wing root LE. Horizontal datum: Top of rear fuselage 1000:45 tail down. The standard nose weights each reduce min front cockpit load by 5 kg. One litre may be put in the tail tank for each 34 litres in the wing tanks. Tail tank is 5320mm aft of datum. Main wheel is 65mm aft of datum. Tail wheel is 5265mm aft of datum, tailskid is 5300mm aft of datum. Maximum speeds VNE at altitude Knots Kph Height in feet Knots Kph VNE 135 250 6600 - 10 000 feet 130 241 Rough air Manoeuvre 97 180 97 180 10 - 13 000 feet 124 229 13 - 16 000 feet 117 217 Aerotow* (Fin pitot) Winch / auto tow 97* 81 U/C down 97 180* 150 180 16 - 20 000 feet 20 - 23 000 feet 23 - 26 000 feet 26 - 30 000 feet 30 - 33 000 feet 111 205 105 194 99 183 93 172 87 162 33 - 39 000 feet 76 141 Notes: - *Max aerotow speed is 81 knots (150 kph) with a nose pitot. TN 396-5 (Mod 396-10) introduces a fin pitot. Max winch weak link: 910 Kg (Brown) Tyre pressures: Nose & tail wheels 3 bar, 43 psi. Main wheel 4 bar, 57 psi. Non aerobatic. Intentional spinning prohibited. Cloud flying is not permitted. Brake fluid SAE - J 1703 or US specification FMVVS 116, DOT 3 resp. DOT 4 German (LBA) Type certificate number 396 This sheet compiled by: Tim Macfadyen Date: 6 Dec 2002 Page 49 of 153