Design Doc D.docx - COSGC viewThe mission for team ‘Hang Seven’ is to design, build, test, and...

download Design Doc D.docx - COSGC viewThe mission for team ‘Hang Seven’ is to design, build, test, and launch a BalloonSat to 30 kilometers. The BalloonSat “Aether” will be outfitted

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Transcript of Design Doc D.docx - COSGC viewThe mission for team ‘Hang Seven’ is to design, build, test, and...

Design Doc D.docx

Team Hang 7-Project Aether

Colorado Space Grant Consortium

GATEWAY TO SPACE

FALL 2012

DESIGN DOCUMENT

Team Hang Seven

Written by:

Abby Caballero, Nikhil Desai, Chase Goodman, Ethan Hollenbach, Becca Lidvall, Lucas Migliorini, Paul Smith, Sierra Williams

12/12/2012

Revision D

Revision Log

Revision

Description

Date

A/B

Conceptual and Preliminary Design Review

10/20/2012

C

Design Document C: Final Design Review

11/16/2012

D

Design Document D: Final Design Profile

12/12/2012

Table of Contents

1.0 Mission Overview ..............................................................................................................4

1.1 Mission Statement..................................................................................................4

1.2 Mission Background..............................................................................................4

1.3 Mission Summary..................................................................................................4

2.0 Requirements Flow Down ..................................................................................................5

3.0 Design .................................................................................................................................6

3.1 Design Diagrams....................................................................................................8

3.2 Functional Block Diagram......................................................................................9

3.3 Schematic...............................................................................................................10

4.0 Management .......................................................................................................................10

4.1 Team Positions.......................................................................................................11

4.2 Schedule.................................................................................................................11

5.0 Budget ................................................................................................................................13

6.0 Test Plan and Results .........................................................................................................14

6.1 Testing Schedule....................................................................................................14

6.2 Structure Tests........................................................................................................14

6.3 Hardware Tests.......................................................................................................16

7.0 Expected Results ................................................................................................................19

7.1 Graphs....................................................................................................................20

8.0 Launch and Recovery..........................................................................................................22

8.1 Pre-Launch Plan.....................................................................................................22

8.2 Post-Launch............................................................................................................23

9.0 Results, Analysis, and Conclusions.....................................................................................23

9.1 Failures and Analysis..............................................................................................25

10.0 Ready for Flight.................................................................................................................26

11.0 Conclusions and Lessons Learned.....................................................................................26

11.1 Conclusion............................................................................................................26

11.2 Lessons Learned...................................................................................................27

12.0 Message to Next semester..................................................................................................27

13.0 Special Thanks...................................................................................................................28

14.0 References..........................................................................................................................28

1.0 Mission Overview

1.1 Mission Statement

The mission for team Hang Seven is to design, build, test, and launch a BalloonSat to 30 kilometers. The BalloonSat Aether will be outfitted with one working homemade Geiger counter and one off-the-shelf Geiger counter. The objective for this mission is to discover how well we can manufacture a Geiger counter and measure how gamma radiation increases in relation to altitude.

1.2 Mission Background

In any manned mission, within the atmosphere or in space, human safety is of utmost importance. Safety has always been a priority in aviation. The Federal Aviation Administration has implemented many regulations to preserve and ensure human safety while in flight. Regulations have been passed regarding communications, structure, and passenger restraints. Subsequently, radiation is a main concern due to the prolonged effects of exposure on the human body during aircraft transit. Considering such risks, materials would have to be employed to ensure the safety of any passengers. Consequently, as altitude increases so does exposure to radiation of all kinds (alpha, beta, gamma); on a typical passenger aircraft traveling approximately 12,000 meters, the amount of radiation exposure will be double that on the ground. As one increases in altitude, much of the Earths natural protective attributes such as cloud cover, atmosphere, and the ozone layer are dissipated. Radiation in itself can be a lethal force, only 35 rad (.35 gray) of absorption will cause serious health effects. Negative health effects include: nausea, vomiting, hair loss, loss of consciousness, cancer, and even death. Such negative health effects could be affecting millions of people who travel in aircraft. Even minimal exposure to radiation may result in damage to the human body.

To give a general idea of how much radiation we are supposed to be measuring, a typical amount of radiation that an average person would receive a year would be around 1mSv/yr (0.1Sv/h average).

1.3 Mission Summary

Our original mission was to measure the depletion effect that two materials, carbon fiber and aluminum, have on blocking radiation levels. This proved to be problematic as we experienced many setbacks and problems while making our Geiger counters. To better fit our skills we created an alternative mission: we have chosen to develop one Geiger counter to measure the levels of Gamma radiation in the atmosphere. This is a change from making three and also removes the materials carbon fiber and aluminum from testing. Furthermore we will launch a kit Geiger counter from space grant alongside ours to record the actual radiation measurements. We will also modify the original designs we found online to better suit our requirements, specifically so it will record to an SD card rather than producing clicks. The data retrieved from these two devices will be compared to determine how efficient our Geiger counter measures radiation.

2.0 Requirements Flow Down

The requirements for the Aether mission are presented below. The requirements are an overview of what needs to be accomplished by our satellite. The level zero requirements are all derived from the mission statement. All subsequent requirements are either derived from the mission statement or the previous requirements.

Level

Number

Requirements

Requirement Met?

Derived From

0

1

Payload shall ascend to an altitude of 30 kilometers via balloon

Yes, the balloon reached an altitude of 30.3 km.

Mission Statement

0

2

Payload shall store and collect data from our sensors

Partial success, one SD card successfully collected data while the other SD was corrupted.

Mission Statement

0

3

The payload mass will not exceed 1.025kg

Yes, we had a final mass of 1.025 kg.

Mission Statement

0

4

The payload shall be ready for launch by 1 December, 2012

Yes, the payload was ready on time.

Mission Statement

0

5

The team and project shall obey all safety precautions

Yes, all safety precautions were met.

Mission Statement

Level

Number

Requirements

Requirement Met?

Derived From

1

1

The payload will be able to hold all electronics and sensors

Yes, the payload successfully held all electronics and sensors.

0-R2/0-R3

1

2

The internal temperature of the payload shall not drop below -10 celsius

Undetermined, the data was collected on the corrupted SD.

1-R2/1-R3

1

3

The payload shall contain a power source

Yes, the payload had a power source of eight 9V batteries.

0-R2/0-R3

1

4

The payload shall be constructed solely of foam core

Yes, the payload was created from foam cor