THK-11
A replica THK-11 on display at the Ankara Türk Hava Kurumu Müzesi - (Ankara Turkish Aeronautical Museum)
Role	Cabin monoplane Type of aircraft
National origin	Turkey
Manufacturer	Türk Hava Kurumu (THK - Turkish Aeronautical Association)
First flight	1947
Status	Abandoned
Number built	1

The THK 11 was a 1940s prototype Turkish four-seat monoplane, designed by Stanisław Rogalski and built by Türk Hava Kurumu (THK - Turkish Aeronautical Association).^[1][2]

Design and development

The THK-11 was a high-wing twin-boom cantilever cabin monoplane with a 135 hp (101 kW) de Havilland Gipsy Major piston engine driving a pusher propeller.^[1] It has a fixed nose-wheel landing gear^[2] and was first flown in 1947.

Specifications

Data from Jane's All The World's Aircraft 1951–52,^[3] Jane's All The World's Aircraft 1949–50^[4]

General characteristics

• Crew: 2
• Capacity: 1 passenger
• Length: 8.44 m (27 ft 8 in)
• Wingspan: 11.80 m (38 ft 9 in)
• Height: 2.59 m (8 ft 6 in)
• Wing area: 18.7 m² (201 sq ft)
• Empty weight: 828 kg (1,825 lb)
• Gross weight: 1,150 kg (2,535 lb)
• Powerplant: 1 × de Havilland Gipsy Major four-cylinder air-cooled inverted in-line engine, 101 kW (135 hp)
• Propellers: 2-bladed fixed-pitch pusher propeller

Performance

• Maximum speed: 201 km/h (125 mph, 109 kn)
• Cruise speed: 164 km/h (102 mph, 89 kn)
  
• Landing speed: 80 km/h (50 mph; 43 kn)
• Range: 800 km (500 mi, 430 nmi) in still air
• Service ceiling: 3,500 m (11,500 ft)
• Rate of climb: 3.5 m/s (690 ft/min)
• Wing loading: 61.5 kg/m² (12.6 lb/sq ft)
• Power/mass: 11.4 kg/kW (18.7 lb/hp)