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Introduction
The Pnut is a high-quality, high-precision, full-featured rocket
altimeter that acquires flight data continuously during your
rocket’s flight for later download and inspection. A large
onboard memory stores altitude, temperature, and battery
voltage data sampled 20 times per second for up to 9 minutes
per flight, for the last 31 flights. It also provides immediate
post-flight reporting of peak altitude and maximum velocity
without the need for a computer. It is ideal for intermediate to
advanced rocket education, advanced science fair projects, and
contest use.
The Pnut is installed inside your rocket and activated prior to
launch. When you retrieve your rocket, the Pnut will report
the apogee altitude (how high your rocket went, up to 100,000
feet above ground) and the maximum velocity (how fast your
rocket went, in miles per hour). It uses a convenient, easy to
understand audio reporting method that is audible from
outside your rocket, so removal or inspection of the altimeter
is not necessary. The reported altitude and velocity are
alternated with a 10 second siren sound that helps to locate
your rocket even if it is hidden in tall grass or a tree.
Using the optional USB Data Transfer kit, the full flight data
(altitude, temperature, voltage) can be downloaded to a
computer for storage, graphing, and additional manipulation.
Because of the generous memory size, it is not necessary to
bring the download equipment to the launch – 31 flights can be
made before download of the data is necessary.
If you want to step up to electronic parachute deployment, you
may want to consider the PerfectFlite StratoLogger, which has
the Pnut’s flight data download features and adds two event
