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Type One Switch - Mil-Spec Hardware!
| Part # | G Switch Type One
Mil-Spec Hardware Rated for 50,000 G's |
| Package | Hermetically sealed TO-18 axial lead |
| Dimensions | 0.43"x0.19" |
| Weight | < 2.0 grams |
| Direction | Linear |
| Activation Level | 2.1G +/- 10% |
| Contacts | Normally Open |
| Contact Rating | 250mA at 24 VDC < 10Ohms |
| Insulating Resistance | 30 MOhm minimum |
| Operating Temp. | -65deg F to +185deg F |
The unit looks like a miniature 22 shell. The flange on the unit indicates the aft end of the switch, if used in a rocket this feature would face aft.
Price - $17
Type Two Switch - An inexpensive alternative to above unit
This switch can be useful for arming or firing second stages, beginning a recovery sequence, serving as a telemetry marker, or other uses up to your personal ingenuity. It is a well controlled button switch which has a useful extension to which an intertial weight can be attached. A weight of 5 grams (a USA Nickel) will trigger at 28 g's, ten grams at 14 g's, 20 grams at 7 g's, etc. It will respond to a g force in one axis only. It is about 1/2 inch square and 1/2 inch in overall height. Add your own inertial mass.
Science Experiment:Figure out your own requirements using F=m*a, where F is force in Newtons, mass is in Kg, and a is in m/s/s. Multiply whatever G you want by 9.8 to convert G's into m/s/s (1 G = 9.8 m/s/s)
Price $1.50