iPhone rocket in 3D
Thursday 6 November 2008 - Filed under Journal + Rockets
A further update from my previous post on my iPhone rocket launch.
This is kind of a cool plot using only the GPS data:
Here is a plot of the first few seconds of the launch from the accelerometer:
You can see that the data peaks at 3g when I was expecting 12g. The acceleration heads back up from negative territory quicker that predicted as well. The prediction is from RASAero.
Here’s the whole flight from the accelerometer:
The red line at 1 at t < 0 the phone is sitting upright in the rocket before launch. Most of the acceleration is in the Y axis at launch but some is in Z as the rocket leans over into the wind. The ejection charge, in theory, goes off at 15 seconds or so but at 22 seconds the accelerometer goes nuts and by 27 seconds the iphone is now inverted, hanging upside down from the parachute. The data dies for some unknown reason when it hits the ground at t=74s.
I need to look for rotation in the X and Z axes with Fourier or something.
2008-11-06 » lolife
7 November 2008 @ 9:25 pm
You can also see that we get no data at all from the time the ejection charge went off at t=15 until the parachute comes out at t=22. It seems like the iphone has some sort of protect mode or something?
10 November 2008 @ 10:33 am
[...] in-depth post with a look at the data received from the iPhone while it was in flight – along with a 3D rendition of the GPS data and accelerometer [...]
11 November 2008 @ 3:00 am
[...] In seinem Blog hat Koppelmann die Graphen und Auswertungen des Raketen-Flugs veröffentlicht, dass iPhone selbst, mit Schutz-Case und eigenem Fallschirm ausgestattet, hat den Ausflug gut überstanden. Das Interview gibt es im Anschluss. [...]
11 November 2008 @ 11:00 am
[...] out his site for the data or the video of the launch and an interview at [...]
11 November 2008 @ 10:13 pm
[...] out his site for the data or the video of the launch and an interview at [...]
11 November 2008 @ 11:38 pm
[...] can check out the data logged by his iPhone here and a video interview with Make [...]
12 November 2008 @ 11:32 am
[...] website for further information about the iPhone Rocket a 3D rendition of the GPS data here; the iPhone’s accelerometer readings here; and data received from the iPhone while it was in [...]
12 November 2008 @ 7:36 pm
[...] website for further information about the iPhone Rocket a 3D rendition of the GPS data here; the iPhone’s accelerometer readings here; and data received from the iPhone while it was in [...]
20 April 2009 @ 2:10 pm
[...] website for further information about the iPhone Rocket a 3D rendition of the GPS data here; the iPhone’s accelerometer readings here; and data received from the iPhone while it was in [...]