My bunny ears are on!
Jimmy F.
TRA 12524
From: James Dougherty
Sent: Wednesday, June 10, 2015 1:39 PM
To: tccrockets@xxxxxxxxxxxxx
Subject: [tccrockets] Re: Flight Visualization Video
Thx
Some other fusion stuff with R-Pi coming up - stay tuned!
Sent from my iPhone
On Jun 10, 2015, at 1:35 PM, Dennis Yeh <dennismyeh@xxxxxxxxx> wrote:
Ahh, just looked it up - cool project :D!
On Jun 10, 2015 1:25 PM, "James Dougherty" <jafrado@xxxxxxxxx> wrote:
Arliss Data Logger
Sent from my iPhone
On Jun 10, 2015, at 1:17 PM, Dennis Yeh <dennismyeh@xxxxxxxxx> wrote:
Does ADL just stand for altimeter data logger or is it a brand/model?
-Dennis
On Jun 10, 2015 7:58 AM, "James Dougherty" <jafrado@xxxxxxxxx> wrote:
Thanks Dennis
Yes, That's with an IMU - the ADL!
Yes, got GEP :-)
Sent from my iPhone
On Jun 10, 2015, at 5:30 AM, Dennis Yeh <dennismyeh@xxxxxxxxx> wrote:
Haven't had a chance to check this out yet, but I imagine you could
get additional data from an IMU - there's some cheap ones for up to 16g and
2000 deg/sec with a 1khz sampling rate for <$10 on amazon (gy-521).
Also, google earth pro is free now!
-Dennis
On Jun 9, 2015 10:58 PM, "James Dougherty" <jafrado@xxxxxxxxx> wrote:
Just notice, it also prints descent rate also!
t=2348s{9.60V,1791.70mA,61.
00F}<36.52,-120.07,14261.15ft> dt=1.00 dv=-13.00 d=4556.72ft,b=170º
[S10E-LS],<36.52,-120.07,14261.15 feet> d=48.64ft,b=98º [S82E-REL]
[DELTA FROM PREVIOUS @1HZ]
t=2348s{9.60V,1791.70mA,61.00F}<36.52,-120.07,14219.49ft> dt=1.00
dv=-12.00 d=4546.44ft,b=170º [S10E-LS],<36.52,-120.07,14219.49 feet>
d=40.22ft,b=95º [S85E-REL]
Let's discuss at next launch.
On Tue, Jun 9, 2015 at 10:55 PM, James Dougherty
<jafrado@xxxxxxxxx> wrote:
Guys,
Haven't forgotten about this, I broke some new ground tonight in
the area of GPS post-processing!
Here you go, Complete NAV and stats on the vehicle (up and
down). Heres the raw output of my new NAV
program with the sensor injection. It's a raw log file, but the
program seems to be working!
Ok, now for some polishing and I'll try not to stay up all night
:-)
More later ..
-James
t=2305s{10.18V,180.40mA,62.00F}<36.51,-120.07,166.01ft> dt=1.00
dv=0.00 d=496.23ft,b=175º [S5E-LS],<36.51,-120.07,166.01 feet> d=0.00ft,b=0º
[N360W-REL][21 Mar 15 23:07:13]
[LAUNCH DETECT, Launch-Site GPS Latch (36.51, -120.07)]
t=2321s{10.18V,180.40mA,61.50F}<36.52,-120.07,12126.64ft>
dt=16.00 dv=227.88 d=2739.60ft,b=161º [S19E-LS],<36.52,-120.07,12126.64 feet>
d=2261.86ft,b=339º [N21W-REL]
[HEADING N21W relative to Launch site - distance of 2739 feet!]
t=2321s{10.18V,180.40mA,61.50F}<36.52,-120.07,12398.95ft> dt=1.00
dv=83.00 d=2834.73ft,b=161º [S19E-LS],<36.52,-120.07,12398.95 feet>
d=95.17ft,b=343º [N17W-REL]
t=2321s{10.18V,180.40mA,61.50F}<36.52,-120.07,12842.52ft> dt=1.00
dv=135.00 d=3035.83ft,b=161º [S19E-LS],<36.52,-120.07,12842.52 feet>
d=201.10ft,b=342º [N18W-REL]
t=2321s{10.18V,180.40mA,61.50F}<36.52,-120.07,13016.08ft> dt=1.00
dv=53.00 d=3132.14ft,b=161º [S19E-LS],<36.52,-120.07,13016.08 feet>
d=96.36ft,b=344º [N16W-REL]
[......]
t=2337s{10.22V,154.60mA,61.50F}<36.52,-120.07,14582.35ft> dt=1.00
dv=-3.00 d=4464.00ft,b=166º [S14E-LS],<36.52,-120.07,14582.35 feet>
d=173.33ft,b=26º [N26E-REL][00 Jan 7 00:00:00]
t=2342s{9.64V,1920.70mA,61.50F}<36.52,-120.07,14423.88ft> dt=5.00
dv=-9.60 d=4527.40ft,b=167º [S13E-LS],<36.52,-120.07,14423.88 feet>
d=66.15ft,b=3º [N3E-REL]
t=2342s{9.64V,1920.70mA,61.50F}<36.52,-120.07,14402.56ft> dt=1.00
dv=-7.00 d=4538.90ft,b=168º [S12E-LS],<36.52,-120.07,14402.56 feet>
d=93.45ft,b=70º [N70E-REL]
t=2342s{9.64V,1920.70mA,61.50F}<36.52,-120.07,14367.13ft> dt=1.00
dv=-10.00 d=4520.24ft,b=168º [S12E-LS],<36.52,-120.07,14367.13 feet>
d=34.38ft,b=111º [S69E-REL]
t=2342s{9.64V,1920.70mA,61.50F}<36.52,-120.07,14348.42ft> dt=1.00
dv=-6.00 d=4531.88ft,b=168º [S12E-LS],<36.52,-120.07,14348.42 feet>
d=33.02ft,b=58º [N58E-REL]
t=2348s{9.60V,1791.70mA,61.00F}<36.52,-120.07,14303.15ft> dt=6.00
dv=-2.33 d=4572.43ft,b=169º [S11E-LS],<36.52,-120.07,14303.15 feet>
d=72.94ft,b=45º [N45E-REL]
[APOGEE]
t=2348s{9.60V,1791.70mA,61.00F}<36.52,-120.07,14261.15ft> dt=1.00
dv=-13.00 d=4556.72ft,b=170º [S10E-LS],<36.52,-120.07,14261.15 feet>
d=48.64ft,b=98º [S82E-REL]
t=2348s{9.60V,1791.70mA,61.00F}<36.52,-120.07,14219.49ft> dt=1.00
dv=-12.00 d=4546.44ft,b=170º [S10E-LS],<36.52,-120.07,14219.49 feet>
d=40.22ft,b=95º [S85E-REL]
t=2353s{10.18V,180.40mA,61.00F}<36.52,-120.07,14022.97ft> dt=5.00
dv=-12.00 d=4546.05ft,b=171º [S9E-LS],<36.52,-120.07,14022.97 feet>
d=85.02ft,b=81º [N81E-REL]
[DESCENT, Compass Bearing 81 degrees, heading S9E @ 4546 MSL in
the Sky]
[DESCENT Heading N81E from previous (chute out)]
On Sat, Apr 4, 2015 at 2:29 PM, fetchen <fetchen@xxxxxxxxx> wrote:
James,
That sounds very interesting.
Yes, if you send the data with GPS, I will incorporate it into
the visualization.
Tom
From: James Dougherty
Sent: Saturday, April 04, 2015 11:50 AM
To: TCC chat ; Bob Feretich ; James Dougherty ; Jimmy Franco
Subject: [tccrockets] Re: Flight Visualization Video
Tom,
Let me tell you something I've been working on for GPS-1 and
ADL fusion ...
I've recently wrote a program which takes the RFS GPS and
sensor data, fuses it, creates time correlated data (even during COCOM lock-out
on GPS), computes haversine (great circle distance or "as the crow flies")
distance, converts GPS to radians and EKF format (when altitude is present),
and performs basic Kinematics from dv/dt (and want to extend to
dx/dt,d/dt,dz/dt with ADL). In the end, It should give you 3D x,y,z and speed
as well as bearing (compass) and heading.
I've spoken to Bob about sensor fusion with the ADL as well,
basically, I need to pass a signal and/or UTC time-stamp when I get first fix
and then all of the ADL 3D data can be correlated as well! It is something we
could probably get going with simply a spare GPIO signal.
Jimmy did a flight last month which has ADL and GPS-1 onboard,
I'm going to work on this with Robert and then we can send you full correlated
data for your visualization program. My plan for the optimal wishlist would be:
time (relative), time UTC, LAT/LON, BRNG, Altitude, Speed, x,
y, z, x', y', z', x'', y'', z'', dps, newtons
The last values would be position, speed, and acceleration, and
integrated newtons seconds.
let me know if there are other fields we could/should use.
Thank you
-James
On Sat, Apr 4, 2015 at 9:06 AM, fetchen <fetchen@xxxxxxxxx>
wrote:
I just added summary to my web site of a project I have done
to visualize a rockets flight using the altimeter data along with the rate gyro
data from the RAF Data Logger board. I have not flown my Data Logger yet (I
plan to at Dairy Aire), so I used the data from one of Bob Feretich’s ARLISS
flights. I have posed a video of the simulation, along with the Python script
for anyone interested. Check out the video – its pretty cool!
Go to
http://www.speedmotionrockets.com/Flight%20Visualization.html and scroll down
to the rocket image and click on it to see the video.
Tom Fetter
