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[[!meta title="2009-05-31 - Successful launch of LV2.3 in Brothers, Oregon"]]

# Success!!

We successfully launched Launch Vehicle 2.3 (LV2.3) this weekend in Brothers, Oregon, at the Oregon Rocketry's Brothers Launch Site. 

### **Saturday morning drive and afternoon setup**

We gathered at Tim's house Saturday morning at 9:00am to pack all of our rocket bits: launch tower, antennas, launch control table, etc. We managed to pack it all into the back of Dave's pickup truck and in Dan's brother Bill's "Toy Hauler" - a large 5th wheel ATV carrier (thanks Dan! thanks Bill!). It was pretty amazing, actually: it was probably the fastest packing and smallest number of vehicles carrying rocket bits we've ever had since LV0. And, amazingly, we actually left *on time*.

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:

- An Ozark Aerospace ARTS flight computer (hooked to the nose separation ring and the main chute line cutter
- a 2m backup system, which used a Alinco DJ-7T 2m radio hooked into a Atmel ATMega168 with a DTMF decode chip (also hooked to the NSR and 2nd line cutter).
- 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. 

[[!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.
 
[[!img launch_600fps_screenshot.png link="launch_600fps.mov" caption="600fps movie of launch"]]

And here's a [[short real-time video|launch_dk.avi]]  of launch.

**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!*

- 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**

- Estimate elevation of hill by launch tower: 4900 ft MSL
- Launch control was at (GPS): `43 deg 47 min 55.4 sec 120 deg 38 min 54.5 sec @ 4459 ft`
- Launch tower was at (GPS): `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 
   - better fin clamps? Screw holes so close together may torque fins?
   - Bar between clamps and fins? Could use shims between clamp and bar.
- 2m backup system
   - horizontal polarization of the bird feeder didn't reach the rocket on the rail (again)
   - Better long wire antenna?
   - Arm rocket by local HT at pad,
   - or multiple (diverse) 2m uplink antennas
   - Goal: verify 2m operation in flight.
- Avionics issues
   - Really didn't like lack of feedback from all the different systems
   - Need a post-launch checklist for what to do with the avionics
- Launch lugs
   - Decide how to really do it. The bottom lug was seemed silly.
- Aeroshell 
   - Too hard to deal with: too tight! Tim: Make them looser.
   - Need to think about sequencing how everything fits together.
- Things that were great
   - Dan's brother Bill's toy hauler (thanks Bill! thanks Dan!).
   - A dirt bike was awesome to have to explore the area and go back and forth from LC to the LT.
   - The two canopies were enough, as long as we had the inside of the Toy Hauler.

## Next steps:

- Possible August launch
   - Won't be ready with Avionics
   - Two months: pretty darn close
- October BRD launch
   - Four months away
   - Initial avionics: APS, 2m, pyro and ATV nodes (keep DVR?)
   - Bonus: FC, IMU, etc.
   - Two airframes for two launches?

## Things to bring for next time:

- Yellow caution tape for coax to antennas.

# Pre-Launch Logistics

The launch of Launch Vehicle No. 2.3 (LV2's third airframe) is taking place at a [Oregon Rocketry's](http://www.oregonrocketry.com/) "pick up" launch under [research launch rules](http://www.tripoli.org/documents/ResearchSafetyCode_Jan_09_r3.pdf), courtesy the [Bend Oregon Rocketry Group](http://www.rocketsnw.com/borg.asp).

## Launch Details

The actual launch is taking place:

- Sunday May 31st, 2009 after 12:00pm and most likely before 3:00pm
- South of Brothers, Oregon at Oregon Rocketry's flight line ([Click here for a map of coordinates +43.79942 -120.65086](http://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=n43.79942+w120.65086&sll=37.0625,-95.677068&sspn=59.337006,111.445312&ie=UTF8&t=h&z=17&iwloc=A)). For more explicit directions, see [Oregon Rocketry's directions page](http://www.oregonrocketry.com/dir/dir-bro.htm). 
- We **must** know you are coming ahead of time (email 'info' at 'psas.pdx.edu'), and attendees **must** sign both a PSU and Tripoli Rocketry Association liability waiver.

## Launch-Specific Information

[[Checklists for May 31st Launch]]

[[Launch Procedures for May 31st Launch]]

## Timeline 

[[!table data="""
Time | Date | Activities
8:00am | Saturday 5/30 | Meet at Tim's house in Tigard, and pack up remaining rocketry supplies. Go over final checklists.
10:00am - 2:30pm | Saturday 5/30 | Drive to Brothers, Oregon launch site (4.5 hour drive).
3:00pm - 7:00pm |  Saturday 5/30 | Set up in Brothers, with dinner.
Evening | Saturday 5/30 | Final prep, marshmallow roast, star viewing.
10:00am - 12:00pm | Sunday 5/31 | Final prep, watch BORG launches.
12:00pm - 1:00pm | Sunday 5/31 | Target time for launch of LV2.
1:00pm - 3:00pm | Sunday 5/31 | Recovery LV2, pack up, watch BORG launches.
3:00pm - Evening | Sunday 5/31 | Return to Portland (4.5 hour drive) 
"""]]

## Lodging

- You can camp out at the launch site, but you must [observe OROC's site regulations](http://oregonrocketry.com/pol/Launch%20Site%20Rules%20draft%202.pdf).
- There are several [hotels and motels nearby](http://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=hotels+near+brothers,+oregon&sll=44.766237,-121.821899&sspn=3.295439,6.965332&ie=UTF8&ll=44.067854,-120.958099&spn=0.882138,1.741333&z=10).
- Bart may have some places to stay.

## Weather

Possible showers on Saturday, partly sunny on Sunday. It'll be ~ 60-70 during the day, but it's going to get awfully chilly at night. Here's the [weather forcast](http://forecast.weather.gov/MapClick.php?CityName=Brothers&state=OR&site=PDT&textField1=43.8139&textField2=-120.602&e=0).

## Transportation

### **People, cars and stuff leaving Saturday morning**

[[!table data="""
Who | In What | Other people? | With What
Andrew | red van | 1, maybe 2 | tools, pop-up tents, etc., 2nd Yeasu for backup
Dan | truck? | ? | "Toy hauler", tools, rocket.
Dave | truck | Candace, 3-4 other people | Dan's trailer, with launch tower and other large things, and tools.
Glenn | car | No | HTs, arrow antenna, 2x SLA batteries, SWR meter, 2m birdfeeder.
Ian | car | 1 | nothing
"""]]

People looking for rides who have not yet found one:

- None

People not caravaning:

- Pete

[[!table data="""
Who | In What | Other people? | With What
Maria | car | Kate, Chase | -
Bart | car | Keith, Jules, Ian Duffe | -
K | car | Paula, 1-2 others | -
"""]]

### **People showing up independently**

- Jay and Doug (by car)
- Steve and Louise (by plane, rendezvousing with Glenn) 
- Morgan and Margaret and friends
- Nathan with parents
- Theo

[[!tag general event announcement]]