Certification Project
Tripoli Level 3 for Mike Brest TRA #9383
Dynacom SAAB RB-05A (½-scale)
TAP advisors: Tom Rouse, Ken Biba
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Electronics Bay…Between sessions of glasswork on the
airframe & fins, I started work on the electronics bay. The lack of interior space along with the combined
conditions set up by the requirement for significant nose weight and my
desire for accurate barometric sensor readings, require that the electronics
bay be placed in the only remaining straight section of airframe. This in turn means that the recovery
harness attachment to the motor forward closure must pass through the
electronics bay or that the attachment point be carried through by some
means. I chose the pass through
concept because it seems easier and because it is different. |
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The base, by my fingers, will get
permanently installed at the forward end of the motor mount. The rest of the unit comes out by removing
the two cap-nuted all-threads. |
I still need to do some work including
power switches, and an O-ring seal for the top plate. |
The two G-Wiz MC flight controllers and
their batteries mount in the space around the outside, oriented so that the
pyro-shunts can be inserted through the airframe wall. |
You also can see the access tube in the
center. That is a section of 2.1”
Quantum tube. Some of the recovery
harness will pack into this space. I figured this was a great way to use
Quantum Tube in a supersonic rocket. J |
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So now to make a couple screw switches
to power on the Dual G-Wiz MCs. These
are rather simple to make. |
I solder a pair of wire connectors to
nuts, and epoxy them to opposite sides of a piece of G10 or in this case glassed
basswood. |
Then make walls with masking tape, and
protect the nut threads with a piece of soda straw, then fill with 5-minute
gel epoxy. |
Pull off the tape & soda straw, sand
& shape, then mount to my bizarre shaped electronics bay. |
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Glue down the wires, mount the batteries
& G-Wiz MCs and … BAM! It’s an
electronics module. |
Bottom View This module, when installed, creates an
electronics bay between the inner recovery harness pass-through tube, and the
outer airframe. |
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