Penkala 1910 Biplane

The 1910 Penkala Biplane also called the Leptir (English: Butterfly) was the first aircraft to fly in Croatia.

Penkala Biplane
Avion Penkala.jpg
CA-10 replica of the 1910 Biplane
Role Pioneering aircraft
National origin Croatia
Designer Slavoljub Eduard Penkala
First flight 22 June 1910
Introduction 1910

Design and developmentEdit

The Leptir was a single engine, sesquiplane aircraft with conventional landing gear. The open girder fuselage provides an unusually long distance to the tail surfaces, compared to modern aircraft. The flat bottom surface of the fuselage was covered, forming a long thin triangular surface intended to provide lift, which was not functional in level flight. The aircraft was tail heavy with a center of gravity at 70 percent of wing chord.[1]

Operational historyEdit

The first flight occurred on 22 June 1910 with pilot Dragutin Novak. The aircraft was crashed several months later.


1910 Biplane
Original design
1910 Leptir II
Modifications to include skids
2010 CA-10 Replica
Replica aircraft - Powered by 80 hp (60 kW) Rotax 912 with the center of gravity moved forward for safety.

Specifications (Penkala Biplane)Edit

Data from Sport Aviation

General characteristics

  • Crew: 1
  • Length: 11 m (36 ft 1 in)
  • Wingspan: 11 m (36 ft 1 in)
  • Empty weight: 330 kg (728 lb)
  • Propellers: 2-bladed


  1. ^ "Homage to a Local Hero". Sport Aviation. June 2013.

External linksEdit