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Old May 02, 2012, 12:00 AM
Just Fly it
USA, CA, Bakersfield
Joined Jul 2006
2,095 Posts
Small Three Axis Accelerometers

My brother suggested this, and it may be something that is useable.



Might actually give us a speed profile, and actual speed calculation.
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Old May 02, 2012, 03:05 AM
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PeteSchug's Avatar
Elmhurst, NY (Queens in NYC)
Joined Apr 2004
7,095 Posts
Very interesting in concept.

The spec on the accelerometer says 18G's and I don't think that is enough, but maybe they could make or calibrate one to go higher.

I recall reading that record level flights were in the 70G range.

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Old May 02, 2012, 09:54 AM
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United States, CA, Ventura County
Joined Sep 2008
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We could use the magnetic field sensor for speed measurement?
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Old May 02, 2012, 10:53 AM
Rocket geek
United States, CA, Palo Alto
Joined Dec 2007
653 Posts
Originally Posted by Aerogance View Post
We could use the magnetic field sensor for speed measurement?
I make altimeters that also record acceleration at high rate. I have a 2-axis model that has an acceleration range of 35Gs / 70Gs. Spencer flew one on his 468mph record flight. I also have another version that measures acceleration in a single axis up to 250Gs.


You can't directly calculate speed this way unless you know which way the accelerometer was pointed the whole time. I'm working on a unit that incorporates a 3-axis gyro to do that.
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