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authorAndrew Greenberg <andrew@psas.pdx.edu>2009-06-10 07:08:42 (GMT)
committer Andrew Greenberg <andrew@psas.pdx.edu>2009-06-10 07:08:42 (GMT)
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Launch pictures and movies from 5/31 flight!
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@@ -10,6 +10,10 @@ We gathered at Tim's house Saturday morning at 9:00am to pack all of our rocket
We arrived in Brothers around 5:00pm, and in the last few hours of sunlight, managed to raise the launch tower and set up the antennas.
+[[!img toy_hauler_at_dusk.jpg size="200x200" caption="Done with setup"]]
+[[!img sunset.jpg size="200x200" caption="Saturday evening sunset"]]
+[[!img zs_thunderstorms.jpg size="200x200" caption="Thunderstorms to the west" alt="Courtesy Zander Speaks http://speaksphotographic.com/"]]
+
Saturday evening we stayed up late carefully prepping the avionics module and Dan's helicopter... but we - shockingly- even managed to get some sleep.
This was an "airframe only" launch, but we still managed to cram in a bunch of systems into the rocket:
@@ -19,12 +23,32 @@ This was an "airframe only" launch, but we still managed to cram in a bunch of s
- Keith's Telemetrum flight computer, with GPS (flown as payload only, with it's 900 MHz telemetry sending real-time telemetry and acting as a direction finder).
- An Olimex LPC2148 development board with SCP1000, MP3, and ADXS pressure sensors and ADXL3xx 2 axis accelerometer.
+[[!img dave_and_payload.jpg size="200x200" caption="Dave and payload"]]
+[[!img working_on_payload.jpg size="200x200" caption="Andrew working on payload"]]
+[[!img avionics_work_saturday_night.jpg size="200x200" caption="working late into the night"]]
+[[!img working_on_helicopters.jpg size="200x200" caption="Dan working on his helicopter"]]
+
### **Sunday morning prep**
-Sunday morning we got back to work 9:00am, did a final checkover of the avionics, attached the igniters, buttoned up the rocket, and took it to the launch tower. We were ready to go by about 12:45pm, just in time the 12:30pm - 2:30pm waiver that Jeff of BORG called in for us. Again, surprisingly, we were ready to go, we just had to wait for a cloud break. After waiting about 30 minutes for a largish patch of blue sky, we turned on the avionics system(s), and cleared the pad.
+Sunday morning we got back to work 9:00am, did a final checkover of the avionics, attached the igniters, buttoned up the rocket, and took it to the launch tower.
+
+[[!img camera_port.jpg size="200x200" caption="Rocket Cam"]]
+[[!img ltc.jpg size="200x200" caption="Launch Tower Computer"]]
+[[!img launch_tower_prep.jpg size="200x200" caption="Prepping the launch tower"]]
+[[!img putting_together_rocket.jpg size="200x200" caption="Putting together the rocket (avionics through motor bay)"]]
+
+We were ready to go by about 12:45pm, just in time the 12:30pm - 2:30pm waiver that Jeff of BORG called in for us. Again, surprisingly, we were ready to go, we just had to wait for a cloud break. After waiting about 30 minutes for a largish patch of blue sky, we turned on the avionics system(s), and cleared the pad.
+
+[[!img zs_loading_motor.jpg size="200x200" caption="Pete loading the N motor" alt="Courtesy Zander Speaks http://speaksphotographic.com/"]]
+[[!img zs_going_up.jpg size="200x200" caption="Ready to go" alt="Courtesy Zander Speaks http://speaksphotographic.com/"]]
+[[!img zs_rocket_on_tower.jpg size="200x200" caption="Rocket and launch tower" alt="Courtesy Zander Speaks http://speaksphotographic.com/"]]
One fun distraction was Dan's electric "T-Rex" helicopter. He strapped our spare camera and 2.4 GHz ATV transmitter to the nose and buzzed launch control and the launch tower. We had high hopes to catch the launch from the helicopter's perspective, but a loss of RC control made the 'copter crash and snap a blade. Next time!
+[[!img 2009-05-31_helicopter_overflight.png link="2009-05-31_helicopter_overflight.mov" caption="RC Helicopter flight movie (14 MB)"]]
+[[!img helicopter-pre-flight.jpg size="200x200" caption="Helicopter pre-flight"]]
+[[!img zs_helicopter_in_flight.jpg size="200x200" caption="Helicopter on its way!" alt="Courtesy Zander Speaks, ]]
+
### **Sunday afternoon launch.**
Ian hit the "launch" button at about 1340 PDT in our Java "LaunchControl" software that he patched for this airframe-only flight, and it counted down and launched the rocket over the WiFi link to the launch tower.
@@ -33,22 +57,61 @@ Ian hit the "launch" button at about 1340 PDT in our Java "LaunchControl" softwa
And here's a [[short real-time video|launch_dk.avi]] of launch.
-The rocket leaped off the pad on Pete Ekstrom's "N" motor with a eery blue glow. We heard two large reports, which later we figured out was the motor "chuffing" (overpressuring). We all lost track of it as it went above the cloud layer, and we all desperately were hoping the parachute system would work. Keith lost telemetry for a a few seconds, but once he got it back, he was able to announce that we were falling slowly enough that we should be on the drogue. And indeed, about a minute after that, the drogue and rocket were sighted. Finally, the ARTS board fired the line cutters and the main chute came out. To top it all off, the rocket landed only a few hundred feet from the launch tower!
+**TODO**: Edit down the 800 MB (!) onboard video and post ASAP
+
+The rocket leaped off the pad on Pete Ekstrom's "N" motor with a eery blue glow. We heard two large reports, which later we figured out was the motor "chuffing" (overpressuring).
+
+[[!img zs_launch.jpg size="200x200" caption="Launch!" alt="Courtesy Zander Speaks http://speaksphotographic.com/"]]
+[[!img zs_rocket_blast.jpg size="200x200" caption="Blast left by motor" alt="Courtesy Zander Speaks http://speaksphotographic.com/"]]
+
+We all lost track of it as it went above the cloud layer, and we all desperately were hoping the parachute system would work. Keith lost telemetry for a a few seconds, but once he got it back, he was able to announce that we were falling slowly enough that we should be on the drogue.
+
+[[!img looking_for_chutes.jpg size="200x200" caption="Looking for chutes!"]]
+
+And indeed, about a minute after that, the drogue and rocket were sighted.
+
+[[!img rocket_on_drogue.jpg size="200x200" caption="LV2.3 falling on the drogue"]]
+[[!img rocket_on_drogue_deploying_main.jpg size="200x200" caption="Rare shot of the main deploying"]]
+[[!img almost_down.jpg size="200x200" caption="Nosecone and main body"]]
+
+Finally, the ARTS board fired the line cutters and the main chute came out. To top it all off, the rocket landed only a few hundred feet from the launch tower!
+
+[[!img nose_and_droque.jpg size="200x200" caption="Nose cone and drogue parachute on ground"]]
+[[!img zs_rocket_on_ground.jpg size="200x200" caption="rocket body and main parachute on ground" alt="Courtesy Zander Speaks http://speaksphotographic.com/"]]
+[[!img used_motor.jpg size="200x200" caption="A well used motor"]]
+
And just in time, too: about an hour after the launch, the winds whipped up and started blowing over tents and people, and it started to drizzle. We packed up in record time, and headed back to Portland.
-All in all, a perfect flight!
+*All in all, a perfect flight!*
- Thank you to Jeff and BORG for arranging the waiver.
- Giant thank yous to Liz, Casey and Alex for helping out so much.
+- Double thanks to Alex Speaks of [Zander Speaks Photography](http://speaksphotographic.com/) for taking such great photos (you can see <http://speaksphotographic.com/psas> for even more photographs of the launch).
+
+Also thanks to:
+
+[[!img zs_thanks_to_nasa_and_psu.jpg size="200x200" caption="Thanks to PSU, NASA, IBM..." alt="Courtesy Zander Speaks http://speaksphotographic.com/"]]
+[[!img zs_thanks_to_aess.jpg size="200x200" caption="... and the IEEE AESS" alt="Courtesy Zander Speaks http://speaksphotographic.com/"]]
+
-## Launch information
+
+### **Launch information**
- Estimate elevation of hill by launch tower: 4900 ft MSL
- Launch control was at: `43 deg 47 min 55.4 sec 120 deg 38 min 54.5 sec @ 4459 ft`
- Launch tower was at: `43 deg 47.652 min 120 deg 39.0889 min @ 4488 ft` (2m accuracy w/10 satellites)
- Drogue was 16 paces and main was 34 paces away from LT, and between them was 32. Tim's paces are ~ 6 ft.
+### **Launch Data**
+
+- [[2009-05-31_data_from_arts.csv]]
+- [[2009-05-31_data_from_telemetrum.gnumeric]]
+- Olimex data: lost due to lack of launch detect
+
+**TODO**: Post graphs and final altitude and velocity numbers.
+
+
## Notes on the launch
- We need straighter fins