Team DionysusTeam DionysusLaunch Readiness ReviewLaunch Readiness Review

Elise Kowalski, Michael Beach, Josh Elise Kowalski, Michael Beach, Josh Tiras, Chris Konciljia, Alijah Smith, Tiras, Chris Konciljia, Alijah Smith,

Becca SeigelBecca SeigelNovember 5, 2009November 5, 2009

Mission OverviewMission Overview

Objective: Use an infrared sensor and an ultraviolet Objective: Use an infrared sensor and an ultraviolet sensors to determine the flux of infrared and sensors to determine the flux of infrared and ultraviolet light throughout the troposphere and lower ultraviolet light throughout the troposphere and lower stratosphere stratosphere

Prove: UV and IR light intensity increase with altitudeProve: UV and IR light intensity increase with altitude Hypothesis: UV and IR light intensity increase with Hypothesis: UV and IR light intensity increase with

altitudealtitude Large amounts of radiation can damage people’s skin Large amounts of radiation can damage people’s skin

and have other negative effects on other life on earth. and have other negative effects on other life on earth. A greater understanding of light penetration can help A greater understanding of light penetration can help further protect people from radiation from the sun. further protect people from radiation from the sun.

External DesignExternal Design

Triangular Prism

Flat Top

Upper level sides slanted at 12° (average sun angle during flight)

Internal DesignInternal Design

Heater placed near camera batteries and 9Vs to avoid overheating the AVR and to keep the camera batteries warm

Sensors on upper level slanted sides in addition to switches (one UV on each side, IR paired with UV on one side)

1.5 cm layer of insulation covering all internal sides (not shown)

Test ResultsTest Results Drop TestDrop Test

Dropped three times from four stories Dropped three times from four stories Results: minor indentation in corners, mass simulators (rocks + duct tape) loose. Results: minor indentation in corners, mass simulators (rocks + duct tape) loose. Revision to design: interior of box made smaller so hardware doesn’t slide or rub Revision to design: interior of box made smaller so hardware doesn’t slide or rub

against each other if jostledagainst each other if jostled Whip TestWhip Test

Swung on various lengths of rope, various speeds, many timesSwung on various lengths of rope, various speeds, many times Results: no damage to mass simulators, flight tube hole slightly tornResults: no damage to mass simulators, flight tube hole slightly torn Revision to design: Paperclip bent underneath washer instead of above, flight Revision to design: Paperclip bent underneath washer instead of above, flight

tube made shorter, new holes cut in flight tube so paperclip won’t allow tube to tube made shorter, new holes cut in flight tube so paperclip won’t allow tube to slide within box.slide within box.

Kick TestKick Test Kicked down six flights of stairs three timesKicked down six flights of stairs three times

Results: same as drop testResults: same as drop test Revision to design: same as drop testRevision to design: same as drop test

Cold TestCold Test Placed in cooler with dry ice for two hours, done three timesPlaced in cooler with dry ice for two hours, done three times

Results: problems with heater, AVR and camera shutting off less than half way Results: problems with heater, AVR and camera shutting off less than half way through test- later found out reading data wrong…GOOD TEST! through test- later found out reading data wrong…GOOD TEST!

Revision to design: Increased dimensions of box to include thick insulation on all Revision to design: Increased dimensions of box to include thick insulation on all sides, hardware rearranged to make camera batteries and 9V batteries closer to sides, hardware rearranged to make camera batteries and 9V batteries closer to heaterheater

Results: unsuccessful, interior of box too cold, hardware and camera shut off

Revision to deign: added .5 cm insulation to each interior wall

Results: better, still unsuccessful, interior of box too cold

Revision to deign: increased dimensions 1 cm in order to add 1.5 cm insulation to each interior wall

Cold Test 1: DATA Cold Test 2: DATA

Results: successful, interior of box remained very warm

Revision to Design: none

Cold Test 3: DATA

Flight ResultsFlight Results

We expect to see an increase in radiation We expect to see an increase in radiation as altitude increases.as altitude increases.

UV: 0 - 0.6 Watts per m^2 per nanometerUV: 0 - 0.6 Watts per m^2 per nanometer IR Ground: 0.5-1 Watts per m^2 per IR Ground: 0.5-1 Watts per m^2 per

nanometernanometer IR at altitude: 1-1.5 Watts per m^2 per IR at altitude: 1-1.5 Watts per m^2 per

nanometernanometer

ConcernsConcerns

Inserting resistors for UV sensorsInserting resistors for UV sensorsWaking up earlyWaking up earlyCalibrating dataCalibrating data

Compliance MatrixCompliance MatrixSlide Bullet Requirements

2 1 Measure the flux of ultraviolet light intensity as altitude increases.

2 2 Measure the flux of infrared light intensity as altitude increases.

3, 4 Pic Box dimensions and interior structure must support payload

5,6,7 ---- ESAM shall pass all required tests

8 2 UV sensor shall yield 0 - 0.6 Watts per m^2 per nanometer

8 3,4 IR sensor shall yield 0.5-1 Watts per m^2 per nanometer on the ground and 1-1.5 Watts per m^2 per nanometer at altitude