Ö 1 - FVM/CFM Tummeliten ”Tummelisa” (1926-1935) 

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Swedish Air Force Advanced Trainer Ö 1 "Tummelisa". Photo Lars Henriksson 2001

The first ”Tummelisa” was built in the most well known and successful aircraft designed and built by FVM (Flygkompaniets Tygverkstäder på Malmen). At least, all of the 29 aircraft built 1920-1933 served during all years without any fatal accident.

FVM, founded in 1917, was the workshops of the Swedish Army aviation at Malmen, later base for Wing F 3. Malmen, or Malmslätt as it also used to be named, is still a military airfield and nowadays also the location of the Swedish Air Force Museum (Flygvapenmuseum). FVM was renamed CFM (Centrala Flygverkstaden i Malmslätt) in 1926 when the Air Force was established and in 1936 to CVM (Centrala Verkstaden i Malmslätt).

This single-seat aircraft was designed by Henry Kjellson, the father of many early Swedish aircraft. The aeroplane was given the name ”Tummeliten” (Little Tom Thumb), but the pilots preferred to call it ”Tummelisa”, the name of Tom’s female counterpart.  

Eleven of the sixteen earliest built Tummelisas were transferred from the Army to the Air Force in 1926. Two were written off in 1926 when they still were based at Malmen, but the remaining were provided to the Air Force Flight Academy at Ljungbyhed (F 5). As advanced trainers, they got the designation Ö 1.

In 1928, ten new Tummelisas were manufactured and in 1933 further three. The last three was to a large extent built by spare parts.

The Tummelisa was built as a light wooden construction with wings and tail planes coated by linen fabric. The fuselage (and also the ailerons) were covered in plywood with engine cowling of aluminum plating. Many joints are however of metal and the wings etc. are carefully braced with piano wire.

The Tummelisas were fitted with 9-cylinder rotating Thulin A-engines of 90 hp. 

The aircraft was small and light. It had excellent flying abilities, but it demanded skill and sensitivity of the pilot. The torque of the rotating engine was considerable in this small aircraft and had to be compensated with care.

The last aircraft was written off in 1935, luckily undamaged. It can now be seen at Flygvapenmuseum. Actually, it was airborne at an airshow in 1962. For photo, see the chapter ”Early Army Aviation”.

Mikael Carlson has built one replica, or perhaps we would say an additional Tummelisa. It took to the air for the first time in 1989 and is now SE-XIL in the civil register. His beautiful machine is powered by an original engine. We can see it on the photos, taken at the airshow at Malmen in May, 2001. Note the mechanic wiping away the castor oil after flight! The aircraft is marked as the Ace of Spades, one of four aircraft - the Four Aces - of a former display team.

Length: 5,47 m. Span: 7,80 m. MTOW: 535 kg. Max. speed: 148 km/h.



For the Model Builder

The Czech company Kora Models has developed an i model kit of Ö 1 Tummlisa of resin with photo-etched parts. Scale 1:72. Catalouge number 7253.

Swedish Air Force Advanced Trainer Ö 1 "Tummelisa". Photo Lars Henriksson 2001


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Updated 2010-08-01