summaryrefslogtreecommitdiff
path: root/lv2c_launchdata-2010-06-27.mdwn
blob: 770c828b3039a6674551efd0b19764bba1be7d2d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
# Launch of LV2c in Brothers on June 27, 2010

[[!img takeoff.png size="300x300" class="picture"]]

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)| 2.72 [m]               | 107.0 [in]
**CG** (from tip of nosecone)| 2.56 [m]               | 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/watch?v=6P6lFe1y9Hg](http://www.youtube.com/watch?v=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

### Flight at a glance

Actual Recoded data from the flight:

 - **Motor**: AeroTech N2000-W
 - **Liftoff Time**: 2:44 pm PST June 27th, 2010

[[!table class="data" data="""
Metric                          | MKS                     | Imperial
**GLOW**                        | 30.8 [kg]               | 67.9 [lbs]
**CG** (from NSR seam)          | 1.357 [m]               | 53.44 [in]
**Apogee** (from TeleMetrum)    | 4784.94 [m]             | 15,699 [ft]
**Max Speed** (from TeleMetrum) | 374.83 [m/s] (Mach 1.10 - sea level)| 838.5 [mph]
**Max Accel** (from TeleMetrum) | 102.93 [m/s<sup>2</sup>] (10.5 [g])  | 337.7 [ft/s<sup>2</sup>]
"""]]

### Raw 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]]

#### ARTS2 

Raw data from the [ARTS2 flight computer](http://www.ozarkaerospace.com/) 

 - [[PSAS_arts2_data_20100627.bmp]]
 - [[arts20100627.odf]]

#### Roll (CAN logger)