Vecihi K-VI

Vecihi K-VI is one of the most significant milestones in Turkish aviation history. This biplane, recorded as Türkiye’s first aircraft designed and manufactured domestically, was brought to life through the vision and determination of Vecihi Hürkuş, a pioneer of our aviation. Emerging in the early 1920s during a period of Türkiye’s development efforts, the Vecihi K-VI stood as a tangible demonstration of Turkish engineering and aviation expertise despite limited resources. The aircraft transcended its role as a mere machine, becoming a symbol of the nation’s quest for independence in aviation and its hopes for the future.

Vecihi K-VI (Aviator Vecihi)

Vecihi Hürkuş and the K-VI

Vecihi Hürkuş has played roles in Turkish aviation history not only as a pilot but also in engineering, design, education, and entrepreneurship. He served as a pilot during the War of Independence and, after the war, undertook various initiatives to advance both civil and military aviation. His knowledge and passion for aviation led him to take steps toward designing and building his own aircraft. Despite the economic and technological constraints of the era, he continued his work in this field. The design and production of the Vecihi K-VI emerged as the result of his individual efforts.

Design and Production Process

The design and production of the Vecihi K-VI were carried out within the constraints of Türkiye’s limited aviation infrastructure and technological capabilities at the time. During this period, when aviation technology was still in its early stages, Vecihi Hürkuş initiated the project using available knowledge and workshop facilities. The aircraft’s fundamental aerodynamic principles and structural features were determined through Hürkuş’s own drawings and calculations. Materials used in production were largely sourced locally, and in some cases, parts from older aircraft were repurposed. The Vecihi K-VI was designed as a biplane, a configuration common at the time and known for providing sufficient lift at low speeds. Its single-engine configuration aligned with the motor technology and availability of the era.

Vecihi K-VI (

Technical Specifications

When presenting the results of his project, Vecihi Hürkuş stated that the key characteristics of the Vecihi K-VI were based on theoretical foundations as follows:

• Manufacturer: Vecihi Hürkuş
• Design: Biplane
• Engine: Benz, 6-cylinder, water-cooled, 200 horsepower (hp)
• Dimensions:
• • Overall Length: 7.610 metres
  • Wingspan: 11.700 metres
  • Height: 3.00 metres
  • Wing Area: 31.800 square metres
• Weights:
• • Empty Weight: 830.00 kg
  • Crew Weight: 160.00 kg
  • Combat Weight: 80.00 kg
  • Fuel Weight: 200.00 kg
  • Gross Weight: 1,270.00 kg
• Performance:
• • Maximum Speed: 207 km/h
  • Cruising Speed: 188 km/h
  • Stall Speed: 83 km/h
  • Load per Wing Area: 40.0 kg/m²
  • Weight per Power: 5.8 kg/hp
• Propeller:
• • Diameter: 2850 mm
  • Pitch (Distance per Revolution): 2740 mm
• Safety Factor Ratio:
• • 1.8 (Standard limit)

First Flight and Aftermath

The first flight of the Vecihi K-VI is recorded as one of the earliest aviation initiatives in Turkish history. The flight attracted considerable attention from the press and public of the time. It demonstrated that the aircraft’s fundamental design was flight-worthy. However, serial production and widespread use of the Vecihi K-VI were never realized. This was due to the economic conditions of the era, the underdeveloped state of the aviation industry, and administrative limitations. The Vecihi K-VI is regarded as one of the first domestic attempts to design and build an aircraft in Türkiye.

Enduring Legacy and Significance in Turkish Aviation History

The Vecihi K-VI is recorded in Turkish aviation history as one of the pioneering domestic aircraft projects. This initiative, driven by Vecihi Hürkuş’s individual efforts, is considered one of the foundational examples that paved the way for later developments in aviation. Despite limited technical and financial resources, the completion of this project formed part of Türkiye’s early aviation activities. The Vecihi K-VI is remembered as a historical landmark in the development of modern Turkish aviation industry.

Vecihi K-VI - 1924 "Tayyareci Vecihi Hürkuş and Carpenter Şaban Usta" (