BGA glider data sheet - ASK 21

Data source Manufacturer’s manuals

Date of issue: 1980

Manufacturer: Schleicher

Web site:

Phone:

Fax:

UK Agent: Peter Wells

E Mail: zuluglasstek@clara.net

Phone:01844 208 157

Link to mandatory mods:

URL : http://www.as-segelflugzeuge.de/englisch/e_main.htm

Weighing Data:

Control deflections in mm

Max weight
BGA concession non-aerobatic max weight (+3%)
Max weight of non lifting components (everything except wings)
BGA concession non-aerobatic max weight of non lifting components [+5%]
Max pilot weight (seat load)

Kg Pounds 600 1320 618 1363 410 904
430 949
110 242

Forward C of G limit (aft of datum) Aft C of G limit (aft of datum) Front pilot position (forward) Rear pilot position (forward)

mm 234 469 1185
80

Inches 9.21 18.46
46.65 3.15

Up Ailerons 110 ± 10

Down 45 ± 5

Distance hinge to measurin g point
240

Max free play total
3.01

Elevator 90 ± 5

65 ± 5 230

2.84

Rudder Left & Right 180 ± 20

375 3.88

Airbrakes 25 - 35mm gap between airbrake and wing when fully open.

Controls Moments & Moment

weights

cm Kg

Weights Kg

Ailerons

17,4-22,9 2,85-3,75

Elevator

13,9-18,4 3,15-4,10

Rudder

17,1-22,3 1,75-2,59

Weighing Longitudinal datum: Wing root LE. Horizontal datum: Top of rear fuselage 1000: 52 tail down.

Each lead disk in the nose weighs 1 kg but reduces min front cockpit load by 1,25 Kg (2.76lb).

Maximum speeds

Knots Kph

VNE at altitude Kph meters

VNE at altitude feet

VNE

151 280

0 - 2000

280

0-5000

Knots 151

Rough air

108 200

2000 - 3000

267

5000–10 000

144

Manoeuvre

97 180

3000 - 4000

255

10 000–15 000 132

Aerotow

97 180

4000 - 5000

239

15 000–20 000 121

Winch / auto tow 81

150

5000 - 6000

226

Notes: Span 17 meters Max winch weak link: 1000 Kg (black) Tyre pressures Nose wheel 2.0 bar, 28 psi. Main wheel 2.7 bar, 38 psi. Tail wheel 2.5 bar, 36 psi Fully aerobatic, cloud flying permitted The Hydraulic brake fluid is Aeroshell Fluid 4 or Esso Univis J-13. Theses fluids are mineral based and are very corrosive. CAIR Aviation “Ottfur” hook(s) may be fitted in place of the original hooks.

This sheet compiled by:Tim Macfadyen

Last update: 27 April 2009 (CAIR Aviation hooks added)

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