Klemm Kl 25

https://en.wikipedia.org/wiki/Klemm_Kl_25

Klemm L.25, later Klemm Kl 25 was a successful German light leisure, sports and
training monoplane aircraft, developed in 1928. More than 600 aircraft were
built, and manufacturing licenses were sold to the United Kingdom and the United
States.

With a low cantilever wing, fixed landing gear, and two open cockpits, the
aircraft was developed by Hanns Klemm who used his previous design, the Klemm Kl
20, as a starting point. It first flew on a 20 hp (15 kW) Mercedes engine. About
30 different versions of the Kl 25 were made, and these were equipped with
engines ranging from 32 to 70 kW (43 to 94 hp). The fuselage was covered with
plywood.

Depending on the model, the aircraft's weight was 620 to 720 kg (1,367 to 1,587
lb), and it had a 10.5 to 13 m (34 to 43 ft) wingspan. Takeoff was achieved at
only 50 km/h (31 mph) and the maximum speed was between 150 to 160 km/h (93 to
99 mph).

In relation to similar aircraft of the time, assembly was very easy, and this
made it a very popular aircraft. According to the sales brochures, only 25% of
the engine's power was needed to keep the aircraft flying, compared to biplanes
of the period, which required 50% engine power.

About 600 were built in Germany between 1929 and 1936, serving with various
flight training organizations, with either wheels, skis, or floats. 15 were sold
to Britain before the Second World War, being fitted with a variety of domestic
engines, while 28 more were built by British Klemm Aeroplane Company as the B.A.
Swallow. Production in the United States was carried out by the Aeromarine-Klemm
Company which enjoyed moderate success, as well as developing models for the
American market, in isolation from the parent company, with about 120 built of
all models.


Role
Training plane

Manufacturer
Klemm

First flight
1928

Klemm L 25s took part in many competitions, among others in International
Touring Aircraft Competitions (Europa Rundflug) in 1929 (best 4th place) and in
1930 (best 2nd and 3rd places, L 25E variant).

Specifications (L 25 d VII R)

General characteristics
Length: 7.5 m (24 ft 7 in)
Wingspan: 13.0 m (42 ft 8 in)
Height: 2.05 m (6 ft 9 in)
Wing area: 20.0 m² (215 sq ft)
Empty weight: 420 kg (926 lb)
Max. takeoff weight: 720 kg (1,587 lb)

Performance
Maximum speed: 160 km/h (99 mph, 86 kn)
Range: 650 km (404 mi)
Service ceiling: 4,800 m (15,748 ft)





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