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Post by rayrocketman on Nov 2, 2021 10:47:43 GMT
David Clark, Oz Rocketman.
Bell Rocketbelt #2 NASM
NASM
Control Cable Rigging NASM
Jetavator Control, NASM
Jeremy McGrane
Jetavator Rigging, NASM
Dan Schuld, X-Prize Cup
Dan Schuld, X-Prize Cup
Pop Mech, October 1964
Anthony Ho
Anthony Ho
GoFast
Mark Wells cutting spherical section on nozzle with a ball turner.
Pivot Hole, Mark Wells
Threaded Jetavator, Mark Wells
Finished Nozzles and jetavators, Mark Wells.
Cutaway, Mark Wells
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Post by rayrocketman on Nov 2, 2021 21:49:53 GMT
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Post by rayrocketman on Nov 3, 2021 1:22:18 GMT
Mark's throttle control grip has an interesting adjustable linkage: In this photo, the bottom connection is to the rotating throttle control and the top connection is fixed to the handlebars.
It seems like it would bind as the throttle control is rotated.
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Post by rayrocketman on Nov 3, 2021 1:26:17 GMT
Gorgeous fabrication. They seem somewhat heavy for the application, unless they are intended to counter the pack mass and bring the CG closer to the pilot's CG. I'd be interested in seeing some rocketbelt CG calculations. Obviously, the exhaust must pass in the fore/aft CG plane with sufficient allowance for control.
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Post by rayrocketman on Nov 3, 2021 1:28:55 GMT
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Post by rayrocketman on Nov 3, 2021 1:41:07 GMT
Tangentially related to Jetavators is nozzle placement so thrust passes through the combined belt/propellant/pilot CG. These side views of early Bell rocketbelt designs show a surprisingly aft location. |
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