Watch on Youtube: https://www.youtube.com/watch?v=DVvDY_V3EhM
Bob's Website: https://vj-17.com/
You can find all of Bob's Pictures and all of our Research in a directory on Choppergirl's Webserver:
http://plans.air-war.org/Volmer%20Jensen%20J-17%20Penguin%20Classroom%20Trainer%20Plans/
Choppergirl's Volmer Jensen Website: http://volmerjensen.air-war.org/
Choppergirl's 1981 Volmer Jensen VJ-24w "SunFun" Motorglider: http://dorothy.air-war.org/
The J-17 was no toy (as we first thought), all controls worked and the pilot trainee flew to an black and white instructional film projected forward of the aircraft from a projector mounted on the left wing, which can be seen in some of the pictures. The aircraft was balanced on a pedestal stick and tilted with the movement of the controls and activated the rudder and elevator. A fan in front provided air motion over the control surfaces.
Patents of V. S. Jensen for the J-17 Trainer (Adobe Acrobat Reader Format) :
Oct. 24, 1944 Patent # 139,249
http://plans.air-war.org/Volmer%20Jensen%20J-17%20Penguin%20Classroom%20Trainer%20Plans/USD139249.pdf
June 17, 1947 Patent # 2,422,552
http://plans.air-war.org/Volmer%20Jensen%20J-17%20Penguin%20Classroom%20Trainer%20Plans/US2422552.pdf
I haven't posted on US Hawks in ages, I left my motorglider project in the shop to fly fully aerobatic quadcopter sims, while I was blind for 5 years (I've since gotten surgery to get my eyes fixed), so... salutations

CHOPPERGIRL
https://www.youtube.com/@choppergirl