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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"]]
</div>
<div class="clear"></div>

### Launch

<div class="image_gallery">
[[!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"]]
</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

Onboard camera video from the flight, starting just before ignition and lasting until just after touchdown.

[[psas-lv2c-2010-06-27-short.avi]]

## Launch Data

### TeleMetrum

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

* Processed log: [[2010-06-27-serial-221-flight-002.telem]]

* "Raw" ASCII data from the EEPROM: [[2010-06-27-serial-221-flight-002.eeprom]]

### Roll (CAN logger)