Photography by David Simpson and Linda Kennyhertz
G-METER AND ALTIMETER
Double-duty aerospace instrument on a shoestring budget.
By David Simpson
Here’s an aerospace instrument you can build for $5 that will measure the crushing forces that a model rocket withstands and the rarified strata it attains. It isn’t exactly six-sigma technology in terms of accuracy, but it’s darn fun.
The device, which you install in the rocket’s payload compartment, uses 2 small bands of heat-shrink tubing that slide over a dowel to record the maximum G-force and altitude ...