I have started an article on switch options for rockets. Show me your switches.
this thread is awesome
This photo is from after a very hard 'lawn dart' landing, and a resulting battery fire with the LiPo batteries in the AV bay. Everything in the AV bay was completely destroyed, including all of the surface mount components on the altimeter boards being torn off
The switches still feel fine, have clear continuity, and work like new.
There are almost infinite varieties of switches. Except for specialty situations that I cannot think of right now, these are the best, based on reliability and durability.
Using left over ematch wires, twist and tape down. New wires every flight. Good at least through mach, would rethink for very high performance rockets.
Was that the MDRM?......if so that was a serious lawn dart...This photo is from after a very hard 'lawn dart' landing, and a resulting battery fire with the LiPo batteries in the AV bay. Everything in the AV bay was completely destroyed, including all of the surface mount components on the altimeter boards being torn off
The switches still feel fine, have clear continuity, and work like new.
There are almost infinite varieties of switches. Except for specialty situations that I cannot think of right now, these are the best, based on reliability and durability.
For any commercial switch I won’t use it in a rocket unless the data sheet includes a rating for shock or vibration of 50 gees. Many of the switches shown above were never intended for use in highly dynamic applications.
I’m comfortable using nhk slide switches, Honeywell and Omicron micro switches in a remove before flight holder, and the various screw switches. I’m also comfortable using the WiFi switch from Eggtimer.
Two switches each side for this avionics bay. Microminiature snap-action switches by Honeywell.
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Thanks. More details here if interested: https://forum.ausrocketry.com/viewtopic.php?f=6&t=5019&start=60That is a very organized bay.
Was that the MDRM?......if so that was a serious lawn dart...
Different kind of switches but here ya go
Recessed charge wells... that is brilliant!Two switches each side for this avionics bay. Microminiature snap-action switches by Honeywell.
View attachment 381580
Thanks. Note also the CF rods that take the force from the pressure above the avionics to where it is mounted on the transition.Recessed charge wells... that is brilliant!
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