Rockets: PerfectFlite Altimeter

PerfectFlite Altimeter Reviews

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PerfectFlite Altimeter Feature

Great for model rocket science fair projects. It is easy to use, and very accurate.
Fits inside a .75 inch diameter tube. Weighs 14 grams with battery.
Audible buzzer beeps out the altitude. Just count the beeps to determine the height the rocket reached.
Accurate to +/- 2 feet of reported altitude. Rated for rockets that can reach upto 15,000 feet in altitude.
Stores data for last three flights.

An altimeter measures how high a model rocket flies. This micro-sized electronic altimeter has revolutionized model rocket! It is simple to use, just drop it into the payload bay of your rocket, and launch it.

After you get the rocket back, it makes a series of audible chirps to let you know how high it flew. All you do is count the number of beeps! And it works to altitudes up to 15,000 feet above sea level (accurate to +/- 2 feet) .

This is one small altimeter. It is small enough to fit into a 18mm diameter tube, so it can be used in almost any rocket you might have in your fleet. Its even smaller than the rocket motor that powers the rocket. And it weighs only 14 grams (.5 oz), so that it barely affects the performance of your rocket.

How does it work? The device measures the air pressure surrounding the rocket. Air pressure near the ground is greater than air pressure high in the air. What the unit does is to compare the pressure it senses, to the air pressure on the ground. Using a simple formula, it automatically computes the altitude difference that caused the change in pressure.

This simple way of computing altitude has been used for decades by airline pilots. It is accurate, and easy to determine. But this payload makes it even more simple. It performs all the calculations automatically, so the only thing you have to do is count the number of audible beeps it makes after the flight is over. That is how you can tell how high your rocket flew.

Requires a rocket, such as the "DynaStar Rising Star", that has a payload compartment. The only thing you need to do to the rocket is to make a small hole in the payload tube, so the pressure inside the rocket can equalize with the outside air.

Battery is included. Replacement Battery: Duracell MN21/23, GP A23, Energizer A23, or Radio Shack 23-144.