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# Launch of LV2c in Brothers on June 27, 2010

This was our second "return to flight" launch for the LV2 series. The airframe and recovery systems remained unchanged from [[last flight|news/2009-05-31]]. We added a [[roll control module|rollcontrol]] to as a runner up to full active guidance. We ran an ARTS-2 and a Telemetrum for the flight computers. The motor was an AeroTech N2000W. This page is a container for all the relevant data from the launch of the vehicle including pictures and video.

[[!toc levels="3"]]

## Design

### Overview

[[!img airframe/openRocket_labeled.png size="500x500"]]

We started using Solid Works on academic licenses to model the entire rocket.  This was a big success, tracking all of our parts and giving reasonably accurate CG and mass estimations as well as a bill of materials and assisting in the integration of new parts that fit and worked the first time.

We also created a model in OpenRocket off the Solid Works data which resulted in accurate simulations of the flight.

 - [The airframe CAD model is in our git repository](http://git.psas.pdx.edu/?p=airframe-cad.git;a=summary)
 - [[OpenRocket model|airframe/LV2c.ork]]

## Simulation

We ran a simulation of the flight using [OpenRocket](http://openrocket.sourceforge.net/). This gave us lots of data for our expected performance.

### **Simulated** Launch Data

This is the data run in advance, not taking into account the measured mass or cg, instead values taken from the Solid Works model.

[[!table class="data" data="""
                             | MKS                    | Imperial
**GLOW**                     | 29.5 [kg]              | 65.0 [lbs]
**CP** (from tip of nosecone)| 272 [cm]               | 107.0 [in]
**CG** (from tip of nosecone)| 256 [cm]               | 100.7 [in]
**Burn Time**                | 7.7 [s]                | 6.45e-6 [fortnights]
**Apogee**                   | 4616 [m]               | 15,146 [ft]
**Max Speed**                | 358.9 [m/s] (Mach 1.05)| 802.8 [mph]
**Max Accel**                | 95.7 [m/s<sup>2</sup>] (9.75 [g])  | 314 [ft/s<sup>2</sup>]
"""]]

[[!img height.png size="500x500"]]


### Notes

## Pictures

### Launch Prep

<div class="image_gallery">
[[!img photos/dsc_0261.jpg size="140x140"]]
[[!img photos/dsc_0264.jpg size="140x140"]]
[[!img photos/dsc_0270.jpg size="140x140"]]
[[!img photos/dsc_0299.jpg size="140x140"]]
[[!img photos/IMG_4666.JPG size="140x140"]]
[[!img photos/IMG_4691.JPG size="140x140"]]
[[!img photos/f.JPG size="140x140"]]
[[!img photos/IMG_4694.JPG size="140x140"]]
[[!img photos/IMG_4699.JPG size="140x140"]]
</div>
<div class="clear"></div>

### Launch

<div class="image_gallery">
[[!img photos/k.JPG size="140x140"]]
[[!img photos/dsc_0334.jpg size="140x140"]]
[[!img photos/dsc_0335.jpg size="140x140"]]
[[!img photos/dsc_0336.jpg size="140x140"]]
[[!img photos/dsc_0337.jpg size="140x140"]]
[[!img photos/dsc_0338.jpg size="140x140"]]
[[!img photos/dsc_0339.jpg size="140x140"]]
[[!img photos/dsc_0340.jpg size="140x140"]]
[[!img photos/IMGP3420.JPG size="140x140"]]
[[!img photos/l.JPG size="140x140"]]
</div>
<div class="clear"></div>

### From onboard

<div class="image_gallery">
[[!img photos/liftoff.png size="140x140"]]
[[!img photos/liftoff2.png size="140x140"]]
[[!img photos/NearApogee.png size="140x140"]]
[[!img photos/NSR_fire.png size="140x140"]]
[[!img photos/Horizon.png size="140x140"]]
</div>
<div class="clear"></div>

## Video

 - View of the launch from the flight line.
   - [[!img launch_flightLine_still.png size="100x100"]]
   - Download: [[launch_flightLine_short.mp4]]
   - Watch on YouTube: [http://www.youtube.com/watch?v=2PoPGujVU5I](http://www.youtube.com/watch?v=2PoPGujVU5I)

 - View of the lunch from the top of a nearby hill. (Note the speed of sound delay!!)
   - [[!img launch_hill_still.png size="100x100"]]
   - Download: [[launch_hill_short.mp4]]
   - Watch on YouTube: [http://www.youtube.com/psasrockets#p/a/u/0/6P6lFe1y9Hg](http://www.youtube.com/psasrockets#p/a/u/0/6P6lFe1y9Hg) 

 - Onboard camera video from the flight, starting just before ignition and lasting until just after touchdown.
   - [[!img photos/Horizon.png size="100x100"]]
   - Download: [[psas-lv2c-2010-06-27-short.avi]]
   - Watch on YouTube: [http://www.youtube.com/watch?v=vKw75YMiLA0](http://www.youtube.com/watch?v=vKw75YMiLA0)

## Launch Data

### TeleMetrum

[TeleMetrum](http://www.altusmetrum.org/TeleMetrum/) flight data:


 - "Raw" ASCII data from the EEPROM: [[2010-06-27-serial-221-flight-002.eeprom]]
 - Processed log: [[2010-06-27-serial-221-flight-002.telem]]
 - Simple tab delimited file: [[2010-06-27-serial-221-flight-002.detail]]
 - KML (Google Earth) file: [[2010-06-27-serial-221-flight-002.kml]]

### Roll (CAN logger)