BGA glider data sheet - Discus a, b & cs Data source: Flight Manual Date of issue: Dec 1984 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 Weighing Data: Control deflections in mm Max weight (with water) Kg Pounds 525 1157 Up Down Distance - Max hinge to free measuring point play Max weight dry Ailerons 65±5 35±5 162 ±3 BGA concession non-aerobatic max weight (dry) [+3%] Elevator 47±4 47±4 157 ±3 Max weight of non lifting 240 components (everything except wings) a & b models S/N 245 & on 255 BGA concession non-aerobatic max weight of non lifting components [+5%] a & b models S/N 245 & on 252 268 Max pilot weight (seat load) 110 529 562 556 590 242 Rudder Left Right 340 160 160 ±20 ±20 mm Inches Weight kg Moment kg cm Forward C of G limit (aft of datum) 260 10.24 Aft C of G limit (aft of datum) 400 15.75 Ailerons 3,71 - 4,21 1,7 - 3,7 Elevator 0,67 - 0,85 2,6 - 3,3 Pilot position (forward of datum) 450 17.72 Rudder 4,43 - 4,97 0 - 4,9 Longitudinal datum: Wing root LE Horizontal datum: Rear fuselage top 1000:31 tail down, Discus a & 1000:44, Discus b Max fore & aft play at the wing tip 30mm total. For every 28 litres of water in the wings put 1 litre in the fin tank. Each nose weights weighs 2.2 kg and reduces min pilot weight by 5 kg. Maximum speeds VNE at altitude Knots Kph Height (meters) Height (feet) Knots Kph VNE 135 250 4 - 5 000 13 - 16400 131 243 Rough air 108 200 Up to 6 000 Up to 19680 124 230 Manoeuvre 108 200 Up to 7 000 Up to 22960 117 217 Aerotow 97 180 Up to 8 000 Up to 26240 111 205 Winch / auto tow 81 150 Up to 9 000 Up to 29520 104 193 Up to 10 000 Up to 32800 98 182 Up to 12 000 Up to 39360 85 158 Max winch weak link: 600 Kg (Blue) Tyre pressure:Up to 360 Kg (794 lb) AUW 50 psi, 3,5 bar. Higher weights, 64 psi, 4,5 bar, tail wheel 2 Bar. Semi aerobatic, cloud flying permitted This sheet compiled by: Tim Macfadyen Date: 8 Nov 2002 Last update 1 Jan 2015 TN 360-27 added – Max weight of non-lifting components increased.