Tummelisa
The FVM Ö 1 Tummelisa is the most well known and successful design of FVM at Malmen, Sweden. It is a single seat, single engine Swedish biplane powered by a Thulin rotary 90hp A-engine. The first of these trainers flew in June 1919. Production ended in 1933. Depending on the news source either a total of either 28 or 30 was made.
Thanks to “thegibson” for a superbly done 3D model and color scheme.
A variety of physics changes were required to get good flight performance in RF 7.5. Changes included more suitable wing airfoils for the wings (flat bottom wing airfoil) and for the wing tips (elliptical shape) as per the real life full sized airplane.
Standard flight controls including ailerons.
As usual fly with the channel 5 rate switch in the “High” position.
Notes:
1) This model correctly shares the same nose heavy characteristics as other biplanes from this era.
When rapidly taxiing for takeoff use the elevator to control the height that the tail rises.
Rough surface landing strips such as grass will require judicious use of the elevator.
2) This model shows a fair amount of willingness to stall / crash because of wing washout when banking at slow speed.
3) Performance was not set up to be scale. It was set up with the idea of being powered by a modern moderately powerful engine. Performance therefore is on the livelier side, but not excessively so.
4) Aerobatic performance is not particularly good even though this is a biplane.
This aircraft is sure to please the vintage biplane buffs out there.
The FVM Ö 1 Tummelisa is the most well known and successful design of FVM at Malmen, Sweden. It is a single seat, single engine Swedish biplane powered by a Thulin rotary 90hp A-engine. The first of these trainers flew in June 1919. Production ended in 1933. Depending on the news source either a total of either 28 or 30 was made.
Thanks to “thegibson” for a superbly done 3D model and color scheme.
A variety of physics changes were required to get good flight performance in RF 7.5. Changes included more suitable wing airfoils for the wings (flat bottom wing airfoil) and for the wing tips (elliptical shape) as per the real life full sized airplane.
Standard flight controls including ailerons.
As usual fly with the channel 5 rate switch in the “High” position.
Notes:
1) This model correctly shares the same nose heavy characteristics as other biplanes from this era.
When rapidly taxiing for takeoff use the elevator to control the height that the tail rises.
Rough surface landing strips such as grass will require judicious use of the elevator.
2) This model shows a fair amount of willingness to stall / crash because of wing washout when banking at slow speed.
3) Performance was not set up to be scale. It was set up with the idea of being powered by a modern moderately powerful engine. Performance therefore is on the livelier side, but not excessively so.
4) Aerobatic performance is not particularly good even though this is a biplane.
This aircraft is sure to please the vintage biplane buffs out there.
