Lommatzsch Lom-56
| Lommatzsch Lom-56 | |
|---|---|
| Type: | School , sport and travel aircraft |
| Design country: | |
| Manufacturer: |
VEB Apparatebau Lommatzsch |
| First flight: |
- |
| Production time: |
only project |
Lommatzsch Lom-56 was the design of a light multipurpose aircraft of the GDR , which did not get beyond the planning stage.
development
As part of the planned establishment of an aviation industry in the GDR, the Ministry of Mechanical Engineering submitted a proposal for the development of a single-engine light aircraft in May 1952 . The project, designated as P 101 , was to be based on the Ar 79 and equipped with a T 102 engine, which in turn was to be based on the Hirth HM 504 A and of which individual assemblies from war production in the GDR were still available. The plans were ultimately not implemented, instead the head of research and development at VEB Apparatebau Lommatzsch , Heinz Roessing, was awarded an order towards the end of 1955 for a small multi-purpose aircraft that was used by the airborne units of the Barracked People's Police (VP Luft), the forerunner of the GDR air force , should be used. The demand of the KVP envisaged a training, sport and towing aircraft that was fully capable of aerobatics as a single-seater that should be based on the Jak-18 , but achieve better performance than this. For example, the rate of climb should be 7 m / s.
It was planned to build 100 copies, of which the first half was to be delivered in 1957 and the other half by 1960. The administration of the aero clubs , a code name for the staff of the VP Luft, announced a need for 30 to 40 aircraft, which should be handed over by 1960. VEB Maschinen- und Apparatebau Schkeuditz was planned as the production location , with the former Siebel employee Heinz Roessing and the other former "Siebelians" in the construction group in favor of Halle . The first construction drawings were to be submitted on January 10, 1956.
The group around Roessung decided on a two-seater design in a low- wing design . A Czechoslovak Minor 6 III engine was selected as the drive for the pilot series . For the series production of the aircraft, initially called the Lo-56, later called the Lom-56, a license was planned for the drive. The first considerations envisaged the mixed construction with a tubular steel fuselage partly covered with sheet metal and partly covered with fabric as well as a support and tail unit made of wood, but ultimately a decision was made in favor of an all-metal construction , which would make the aircraft less prone to bad weather conditions when parked outdoors should.
The project was assessed on January 23, 1956 by the Pirna-based Administration for Industrial Requirements (more precisely: Sector 1 - Development) and the Scientific and Technical Council . It turned out to be extremely negative and certified that the Lom-56 was not up to date and did not meet the required parameters. The strength of the slim fuselage was doubted, especially in the transition area to the tail unit, and even a redesign was required. Finally, economic factors such as the lack of a supply industry required for the construction were also criticized, whereby this argument was probably only advanced, since at this time the development of the commercial aircraft 152 was advanced on a large scale and, accordingly, the development of a suitable parts industry. As a result of the bad judgment, work on the Lom-56 was stopped.
Technical specifications
| Parameter | Data (configured) |
|---|---|
| crew | 1-2 |
| span | 11.20 m |
| length | 9.00 m |
| height | 3.23 m |
| V shape | 6 ° |
| drive | an air-cooled six-cylinder in - line engine Walter Minor 6-III with adjustable propeller (Ø 2 m) |
| Starting power | 160 PS (118 kW) |
| Top speed | 250-270 km / h |
| Landing speed | 80-85 km / h |
| Track speed with the best climb |
130 km / h |
| Rate of climb | 4.7 m / s (two- seated ) 4.9 m / s (single-seated) 5–6 m / s (recalculated) |
| Towing load with F-tow | 600 kg at an altitude of 3000 m |
literature
- Frank-Dieter Lemke: History of the aviation industry of the GDR. , Rockstuhl, Bad Langensalza 2019, ISBN 978-3-95966-428-8 .
- Frank-Dieter Lemke: Glider construction in the GDR. Rockstuhl, Bad Langensalza 2018, ISBN 978-3-95966-303-8 .
- Fliegerrevue No. 3/1992, Brandenburgisches Verlagshaus, Berlin, p. 112.
Individual evidence
- ↑ Wilfried Copenhagen : The air forces of the NVA. , Motorbuch, Stuttgart 2002, ISBN 3-613-02235-4 , p. 11.
