Entwicklung und Erprobung von Leichtflugzeugen
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UnclaimedGerman aircraft design firm specializing in gliders, motor gliders, and plans for amateur construction.
Last updated August 31, 2026
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Overview
Entwicklung und Erprobung von Leichtflugzeugen, commonly abbreviated EEL, is a German aircraft design firm based in Putzbrunn. Its name translates approximately as “Development and Testing of Light Aircraft.” The company was established in 1976 by Heiner Neumann and Dieter Reich, who had studied aeronautics at Technische Universität Berlin during the early 1960s. EEL is associated primarily with lightweight glider and motor-glider designs intended to be made available as plans for amateur construction rather than with mass-produced, factory-built aircraft. The firm’s documented aircraft work centers on the ULF series. The EEL ULF 1 was a foot-launched microlift glider with an empty weight of approximately 55 kilograms. It made its first flight in November 1977 and represents EEL’s early focus on very light, simple aircraft that could be operated and constructed with limited infrastructure. The ULF 2 followed as a single-seat motor glider. It first flew in October 1993 and extended the company’s design activity into powered sailplanes while retaining the emphasis on compact, lightweight aircraft. Dieter Reich designed the two aircraft marketed by EEL. His work on the ULF 2 was recognized by the Oskar Ursinus Vereinigung, a German organization associated with amateur-built and experimental aviation. In June 1997, Reich received the organization’s Hans-Becker-Prize for the ULF 2 design. This award is an important documented milestone because it reflects recognition within the German homebuilding and sport-aviation community rather than a conventional commercial-aircraft award. EEL’s business model appears to have been oriented toward aircraft design, development, testing, and the provision of construction plans. The available reference material does not establish a large manufacturing operation, a broad corporate structure, current ownership, or a substantial international sales network. It also does not provide verified information about current management, revenue, employees, production volumes, or the company’s present operating status. Accordingly, EEL is best characterized as a specialist German light-aircraft design enterprise whose historical identity is closely tied to the ULF 1 and ULF 2 amateur-built aircraft projects.
History
Entwicklung und Erprobung von Leichtflugzeugen, known as EEL, was founded in Germany in 1976 by Heiner Neumann and Dieter Reich. The founders had both studied aeronautics at Technische Universität Berlin in the early 1960s, providing the technical background for the company’s later work in small-aircraft design and flight testing. EEL was established as a specialist enterprise rather than as a major aircraft manufacturer, with its activities centered on the development of gliders and motor gliders and on supplying designs in plans form for amateur builders. The first documented EEL aircraft was the ULF 1. This aircraft was conceived as a foot-launched microlift glider and had an empty weight of about 55 kilograms. Its first flight took place in November 1977. The project illustrates EEL’s interest in very light aircraft that could be used in recreational and experimental aviation and potentially built by individuals following construction drawings. The ULF 1 established the company’s early association with minimal-weight glider design. EEL’s second documented design was the ULF 2, a single-seat motor glider. It first flew in October 1993, marking a substantial interval after the ULF 1 and showing a move from an unpowered foot-launched concept to a powered sailplane configuration. Dieter Reich designed both aircraft marketed by EEL. The available references do not provide detailed production totals, engine specifications, construction materials, or a complete chronology of development and deliveries. Recognition followed the ULF 2 program in June 1997, when Reich received the Hans-Becker-Prize from the Oskar Ursinus Vereinigung. The award connected the design with Germany’s amateur-built and experimental-aircraft community and acknowledged Reich’s contribution to the development of the motor glider. It is the principal documented external distinction associated with EEL. The reference record does not identify later aircraft programs, changes in ownership, acquisitions, senior executives, or a confirmed date of cessation. EEL’s website has an English-language section, but the available material does not establish the company’s current commercial activity. Therefore, the firm’s present status should be treated as requiring verification. Historically, EEL is documented as a small German aircraft design and testing company whose main known legacy consists of the ULF 1 and ULF 2, both associated with plans-based amateur construction.
- 1997
Hans-Becker-Prize awarded for ULF 2 design
[1]Dieter Reich received the Oskar Ursinus Vereinigung Hans-Becker-Prize in June for his work on the ULF 2.
- 1993
First flight of the EEL ULF 2
[1]The single-seat ULF 2 motor glider completed its first flight in October.
- 1977
First flight of the EEL ULF 1
[1]The ULF 1, a 55-kilogram foot-launched microlift glider, made its first flight in November.
- 1976
EEL founded
[1]Heiner Neumann and Dieter Reich established Entwicklung und Erprobung von Leichtflugzeugen in Germany as a specialist light-aircraft design firm.
Products and positioning
A specialist light-aircraft design firm focused on lightweight gliders, motor gliders, experimental aviation, and plans-based amateur construction.
Microlift glider · 1977
EEL ULF 1
The ULF 1 is a very light, foot-launched microlift glider designed by Dieter Reich and associated with EEL’s early aircraft-development work. Its empty weight is reported as approximately 55 kilograms. The aircraft first flew in November 1977 and was representative of EEL’s emphasis on compact, lightweight designs suitable for recreational, experimental, and amateur-built aviation.
Single-seat motor glider · 1993
EEL ULF 2
The ULF 2 is a single-seat motor glider designed by Dieter Reich. It made its first flight in October 1993 and became the EEL design most directly associated with powered sailplane development. Reich’s work on the aircraft was recognized with the Oskar Ursinus Vereinigung Hans-Becker-Prize in June 1997. Detailed production figures and technical specifications are not established by the available sources.
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