[General] A Letter From Mojave - A Rocket Flight Opportunity For Code - Project Prometheus of Masten Space Systems
david
ainut at knology.net
Wed Jul 16 19:28:28 CDT 2014
There are 9+ (so-called) DOF sensors on the market now in a single
package (some under $40), obviating the need for a separate
accelerometer. It would definitely be interesting to see the G-forces
as applied all along the track.
Unless someone in the project is married to the RPi, the BeagleBone
Black (BBB) has a lot more compute power and functionality.
Don't count on the accuracy of GPS altitude unless you have a confirmed
WAAS (or equivalent) signal all during the flight. GPS antenna is a
major concern in this type of environment. Some GPS modules can use
signals besides just the ones from the US, but the other countries'
WAAS-equivalents are even more flaky than ours! :) The MTK3339 GPS (like
used in Adafruit's Ultimate GPS products) seems to be robust. I'm just
beginning to program it now. Very low power and can be had for under
$16 in small quantities, or with circuit board and glue for about $40
from Adafruit.
For recording video and metadata, again, the BBB is a good choice as I
have confirmed it works with a 32 Gb SD card. By the weekend, I'll know
it if works with the newer 64 Gb SD cards.
David M.
On 07/16/2014 05:49 PM, Ethan Chew wrote:
> Cool!
>
> So we are talking about the following things we want to do:
>
> * In-Flight Automated Photography
> o Overlay in-flight metadata from on-board sensors; GPS
> coordinates, altitude, temperature, air pressure, CO2, speed,
> and time from launch (T+).
> o Can be done either in-flight or as post-processing (encode
> flight data as exif, add overlay in post).
> * Record flight data for post-flight modelling and visualization
> opportunities.
> o Record 6-dof, acceleration and skin temperature data in-flight.
> o Calculate ballistic coefficient to add to visualization
> opportunities.
>
> And that would mean the following sensors:
>
> * Video/Photo Camera
> * GPS (speed & altitude can be derived from GPS data.)
> * Altimeter
> * Thermometer (setup for ambient and skin temperature readings)
> * Barometer
> * CO2 Gas Sensor
> * Clock (can be done by the Raspberry Pi.)
> * 6-dof sensing
> * Accelerometers
>
> Made a wiki: https://256.makerslocal.org/wiki/Flight_Code_Project
>
> - Ethan
>
> P.S. Of administrative note; I got a clarification from Masten about
> educational institutions flying for free. At this point in time, the
> Prometheus Project is open only to educational institutions as Masten
> is seeking to encourage high school and college students to get into
> engineering. Therefore, the project would have to involve students in
> designing, building, and programming the flight experiments. The
> project could either be run as a class and teaches UAH and other
> Huntsville high school students or the makers involved would
> academically advise a student team.
>
> Kix, taking a page out of your book, how did you run your program with
> FIRST Robotics when you were in the Makers Local 256 shop?
>
>
>
> On Wed, Jul 16, 2014 at 8:05 AM, Phillip Showers
> <phillip.showers at gmail.com <mailto:phillip.showers at gmail.com>> wrote:
>
> you definitely want 6-dof for post flight modelling as well. tie
> in a common variable like time and pump in stuff like 6-dof,
> acceleration and skin temp. You can probably just calculate the
> ballistic coefficient from cad but that gets you started on some
> really fun visualization opportunities.
>
> Phil
>
>
> On Wed, Jul 16, 2014 at 8:34 AM, Satyam Nayak
> <nayaksatyam at gmail.com <mailto:nayaksatyam at gmail.com>> wrote:
>
> I ++1 Josh's suggestion about adding metadata to the picture.
>
>
> On Wed, Jul 16, 2014 at 8:57 AM, WebDawg <webdawg at gmail.com
> <mailto:webdawg at gmail.com>> wrote:
>
> Even better to have it upload that data somewhere after
> the launch for viewing after.
>
>
> On Wed, Jul 16, 2014 at 8:51 AM, Joshua Pritt
> <ramgarden at gmail.com <mailto:ramgarden at gmail.com>> wrote:
>
> It would be neat to overlay some data on each photo
> like GPS coords, altitude, temperature, air pressure,
> CO2, speed, and time from launch (T+).
>
>
> On Wed, Jul 16, 2014 at 8:38 AM, Ethan Chew
> <spacefelix at gmail.com <mailto:spacefelix at gmail.com>>
> wrote:
>
> Just suggested to Masten that they add a
> picture/video camera (of the size and quality
> level of the one in your cell phone) to the sensor
> suite. ;)
>
> On Jul 16, 2014 5:08 AM, "Satyam Nayak"
> <nayaksatyam at gmail.com
> <mailto:nayaksatyam at gmail.com>> wrote:
>
> I was thinking of doing something similar to
> HSIS where we put a camera on auto trigger and
> took a bunch of pictures of the flight.
>
>
> On Wed, Jul 16, 2014 at 6:40 AM, WebDawg
> <webdawg at gmail.com <mailto:webdawg at gmail.com>>
> wrote:
>
> Anyone plan to put any effort into this?
>
>
> On Wed, Jul 16, 2014 at 4:37 AM, Ethan
> Chew <spacefelix at gmail.com
> <mailto:spacefelix at gmail.com>> wrote:
>
> P.S. Note on the sensor suite; the
> hardware in the suite will be
> determined by Masten. However, at
> this point in time of Project
> Prometheus, Masten is open to input on
> what sensor hardware to install.
> Please send sensor hardware
> suggestions to prometheus at masten.aero
> <mailto:prometheus at masten.aero>.
>
>
> On Tue, Jul 15, 2014 at 6:42 AM, Ethan
> Chew <spacefelix at gmail.com
> <mailto:spacefelix at gmail.com>> wrote:
>
> Hello!
>
> On Jul 15, 2014 6:34 AM, "Jeff
> Cotten" <omegix at gmail.com
> <mailto:omegix at gmail.com>> wrote:
> >
> >
> > Hey Ethan, will the raspberry pi
> be connected to the internet
> during the test?
>
> Sorry, no. To avoid interfering
> with Xombie's control system, the
> crew has told me no transmitters
> are allowed.
>
> >
> > If I wrote a piece of code that
> logged into #makerslocal and
> reported back the altitude, would
> it it be able to reach the
> freenode server?
>
> You'd need to make an isolated
> flight data recorder. Due to the
> restriction on transmitters, you
> can only download your data off a
> shore connection when the vehicle
> is back on the ground.
>
> - Ethan
>
> >
> >
> > On Tue, Jul 15, 2014 at 12:08
> AM, Ethan Chew
> <spacefelix at gmail.com
> <mailto:spacefelix at gmail.com>> wrote:
> >>
> >> Hello,
> >>
> >> Take note, it is my current
> understanding that educational
> institutions get to fly for free.
> >>
> >> From Masten Space Systems in
> Mojave, CA (http://masten.aero/),
> an opportunity to fly code on a
> vertical takeoff and landing
> rocket (such as Xombie:
> http://youtu.be/A5b9LnzjGgU) on
> Project Prometheus:
> >>
> >>
> http://masten.aero/2014/05/project-prometheus/
> >>
> >> In summary; there is a
> Raspberry Pi on board that is
> connected to a sensor suite. Send
> Masten some code you want to run
> during a flight that processes
> inputs from the sensors during the
> flight. The project is for the
> rapid, streamlined development of
> tools relating to; visual
> navigation, landing detection,
> mass estimation
> and position/attitude estimation.
> You can reach them at
> prometheus at masten.aero
> <mailto:prometheus at masten.aero> with
> input and questions about the
> program.
> >>
> >> Quote:
> >>
> >>>> the Masten Team has also been
> thinking about ways we could
> engage the broader community and
> increase accessibility to our VTVL
> vehicles. One of the largest
> barriers to entry for any
> technology developer seeking to
> conduct aerospace flight testing
> is access to a vehicle. Limited
> access to an integrated GPS/IMU
> navigation system, flight-rated
> computing platforms, and sensors
> present additional challenges to
> innovators. In the spirit of
> broadening access to aerospace
> resources, we have had a project
> cooking in the background called
> Prometheus.
> >>>>
> >>>>
> >>>> Project Prometheus is a
> Masten program designed to foster
> the development of flight-test
> ready technologies by innovators
> in academic and research settings.
> By implementing a standardized
> interface between Masten vehicles
> and experimental software and
> hardware tools, Prometheus will
> provide a streamlined, efficient
> path for technology maturation
> throughout the course of tool
> conception, development and flight
> test. Access to uniform,
> flight-tested hardware and
> software development framework for
> innovators will ultimately reduce
> integration, development and other
> flight test costs.
> >>
> >>
> >>
> >> - Ethan/spacefelix
> >>
> >>
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>
> --
>
> V/r Ethan
>
> Working E-mail: spacefelix at gmail.com
> <mailto:spacefelix at gmail.com>
> Business E-mail: shinen.chew at gmail.com
> <mailto:shinen.chew at gmail.com>
> LinkedIn:
> www.linkedin.com/in/ethanchew
> <http://www.linkedin.com/in/ethanchew>
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> --
>
> V/r Ethan
>
> Working E-mail: spacefelix at gmail.com <mailto:spacefelix at gmail.com>
> Business E-mail: shinen.chew at gmail.com <mailto:shinen.chew at gmail.com>
> LinkedIn: www.linkedin.com/in/ethanchew
> <http://www.linkedin.com/in/ethanchew>
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