BGA glider data sheet – Cobra 15 - SZD 36A

Data source: Manufacturers’ Handbooks

Date of issue: 1972

Manufacturer: PZL (Poland) Present agent Henryk Mynarski, Glider Factory, Jeżów, Poland

Weighing Data:

Kg Pounds

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

385 396
247 259

849 874
545 572

Max pilot weight (seat load)

128 282

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

mm 194
338
620

Inches 7.64
13.31
24.4

Control deflections Up Down

Ailerons

34°±2°

Elevator (all 14°±1° moving TP)

Geared tab* 9°±1°

16°±1° 7°±1°
12°±1°

Max control total free play 2mm at TE root
2mm at front of mass balance
1mm at TE

Airbrakes Rudder

145 175 ± 10 mm ± 10 mm
35° Left & right

1,5mm fore & aft 2mm at TE bottom

Free plays are measured with the stick (or cockpit controls) locked central. The tab is measured with the elevator locked.
*The tab is 5° down with the elevator neutral.

Longitudinal datum: Wing root LE Horizontal datum: Rigging points on fuselage level

VNE Rough air

Knots 100 76

Maximum speeds Kph 185 Aerotow 140 Winch / auto tow

Knots 76 59

Kph 140 110

Max winch weak link: 750 Kg (Red)
Tyre pressure:36 psi (2,5 Bar)
Semi aerobatic. Cloud flying permitted. The Cobras were originally fully aerobatic but were reduced to semi aerobatic (+4 -1.5G) on reaching 16 years old by a manufacturers’ instruction.
The life is increased from 2000 hours to 4000 hours if the required inspections are carried out at 2000 hours.

Wing span 15 meters

This sheet compiled by: Tim Macfadyen Date: 4 April 2003 Last update 3 April 2015 with BE-007/36/2010 & EASA Major change approval No 10031789 which reduce speeds and aerobatic category.