1:12 scale model test rig and boiler plate
July 5, 2005 - Pictures and designs copyright by Andrew Filo -
Andrew Filo, a long time rocketbelt enthusiastic, and employed in Aerospace Industry on helicopters, aircraft and rockets,has made an unique project.
Andrew and Harold Graham (wearing his original 1961 flight suit) in 2003
He is in progress of a 1:12 scale model test rig in which a compressed air and a PC working together to test fly the whole. The 1:12 scale model attached in the pictures here are actually "3-D printouts" via a process called stereo lithography or SLA
The entire model is separated into 4 sections for ease of printing. The printer actually creates the model by additive process whereby tiny bits are welded together to form the entire model in a real, solid 3D.
The detail is quite high as you can see the control lines are perfectly formed with its complex trajectory.
Unfortunately, the process is still quite expensive. The actual pictures of the entire test rig are on hold for some time to publish. I have seen them, and they just look fantastic.
1:12 scale model (see the coin for comparison) and the whole 1:12 belt attached to a doll, and with the compressed air tubes in place.
This picture with the rocketbelt/doll is a part of a larger picture with the whole test rig, not to be published yet.
Compressed air is used as a consistent and convenient source at this stage. The PC is programmed to operate the valves (left and right on this scale model) to lift the figure, spin it, travel and land on a set charge of compressed air. An encoder, a pressure gauge, and strain gauge measure the lift, thrust and speed generated and is recorded by the PC. This data forms the basis of the flight instrumentation for other types of propulsion. This model will not be used for the manned flight data , simply as a proof of concept for the full scale development
Boilerplate 1:1 model on a stand
Assemblies with newly bought and constructed materials. Andrew is now busy on bowden cables and plumbing
December 28, 2004 :
Front view Jetavator handgrip Throttle handgrip
Update; July 5, 2005
Andrew finished his belt for 95 %. Note the plumbing, it works with compressed air and water for learning purposes.
To be continued..
original D2 oxygen tanks and N2 tank (from Ebay!)