Team R3D3Critical Design Review

Kate KennedyGreg McQuie

Nicole ElaHenk Wolda

Marisa AntunaDevon Campbell

Tyler Smith10/04/11

Mission OverviewOBJECTIVE:    To design, build, and launch a BalloonSat which will test two types of power generation systems (solar panels and propellers) under flight conditions. The mission will also collect data on humidity, temperature and take pictures during flight. EXPECTED DISCOVERIES:• Amount of power generated by solar panels under flight

conditions• Amount of power generated by propellers under flight conditions• Which power generation system is most effective at various

altitudes and conditions

Mission Overview (cont.)

HYPOTHESIS• The solar panels will provide more overall power generation but

during certain flight periods the propeller will be more efficient

Mission Overview (cont.)

PURPOSE• Gain knowledge of solar panel and propeller power generation in

different atmospheric conditions• Compare data from the power generation systems to discover

which system is more effective overall and at different points during flight

• Learn about renewable energy sources for flights within Earth's atmosphere 

• Generate information that future BalloonSats may utilize in selecting power systems

Requirements Flowdown

Requirements Flowdown (cont.)

Design - Mission

1. Structure and Testing2.  Solar Panels mounted on four faces, Attopilot, Arduino3.  Side mounted propeller, Attopilot, Arduino4.  Graph of both power vs. time5.  HOBO6. Camera takes pictures

Design - Parts

Provided: Foam Core, Insulation, Camera, internal heater, HOBOOrdered:• Arduino Uno- have• 3 Attopilot Voltage/Current Sense Breakout Components -have• 10 3V Flexible solar panels - expected Thurs. 10/6

Not Ordered:• 20 rpm Gear motor - expected 2-3 days after order

External Satellite Sketch

Internal Satellite Sketch

Functional Block Diagram

Mass and Budget

Starting Budget: $250•  Arduino Uno: $29.95•  3 Attopilots: $59.85•  Sparkfun S/H: $2.00•  10 Solar Panels: $69.50• Solarhome S/H: $11.95

Subtotal: $173.25Budget Remaining: $76.75• DC Motor: $24.99• Servocity S/H: $6.99

Total: $205.23Budget Remaining: $44.77

Mass:    24 Grams

Test Plan

-Mission Simulation    Drop Test    Spin Test    Cold Test-Experiment    Wind Tunnel    DC generator/Connectivity    Solar Panel system-Image    Taken on a walk-Functional    Comprehensive Test

Test Schedule

Test:    Drop    Spin    Cold    Wind Tunnel    DC Generator/Connectivity    Solar Panel system    Camera    Comprehensive test    Retesting

Date:    10/10    10/10    10/10    10/13    10/13    10/15    10/17    10/17    10/19

Expected Results• gain information about the efficiency of power generation under

different conditions• We expect...

o Solar panels will generate more power overallo From launch to 12 km- propellers will generate more powero 12 km to burst- solar panels will generate more powero Burst to parachute deployment- solar panels will continue to

generate efficiently with some sporadic generation from the propellers

o Parachute deployment to landing- solar panels and propellers will generate power on a comparable level

• Data shall be analyzed post-landing to determine which power generation system is actually most efficient under varying flight environments

 

Team Members

Tyler- Team Leader/IntegrationBuilding and planning construction:

Greg- C&DH / SoftwareData management and programming

Marisa- PowerManagement of budget/process

Devon- StructuresDesign/ structure

Nicole- C&DH / Software           Programming and softwareKate- Science of Propeller           Researching and designing Propeller Henk- Science of Solar Panels

Researching and testing, and installing Solar Panels

Worries

Propeller• What should we build the propeller out of?• What type of propeller do we want to use?

  Voltmeters• Integrating the Voltmeters with the Arduino