CDR Presentation

- Team T.E.N.’s objectives are to fly Ralph with all the systems functioning properly. This includes the boom arm, radiation badge, BASIC Stamp, HOBO, solar cells, video camera and the still shot camera

-We expect to find many things throughout the testing of our experiments and their analysis.

• Our group expects to find higher levels of radiation at higher altitudes.

• Even though we will not exceed 100,000 feet, we hope that our Aerogel sample will capture some space dust.

• There are many things running off of the BASIC Stamp, so we expect to see that our experiments were executed at the correct altitudes and the times.

• The solar cells are not our main source of power, but we are using them as a means to power our boom arm servo and the Aerogel lid, so we need full functionality of them.

Parts:• Foam Core board

• Aerogel

• Aerogel insulation

• Space blanket

• Graphite boom arm

• Pen Cam

• Micro Servo

• HOBO

• Video Camera

• ELPH Camera

• Flight cord tube

• Solar cells

• Radiation Badge

• 9V Batteries

• Heating circuit

• BASIC Stamp

HOBO

BASIC StampRadiation Badge

ELPH Camera

Heating Circuit

Video Camera

Pen Cam

Flight Cord

Servo/Boom

Power Circuit

BASIC stamp

Pen-Cam Servos Video-Cam

9V Battery Solar Panels

control

Heater

Boom Pen-Cam ELPH Cam

9V BatteryHOBO Datalogger

Internal Temp

ExternalTemp

Humidity

HOBO dataloggers25g

Graphite rod15g

Film camera150g

Solar cells44g

Hot glue, silicon glue1g

Temperature sensor5g

Digital video camera20g

Space blanket1g

2 Radiation badge, dosimeter50g

Servo motors9g

Heater30g

Cord tube20g

BASIC stamp59g

Foam core117g

Pen camera20g

Aspen Aerogel Insulation35g

Peep hole, fisheye30g

Wires10g

9 volt batter30g

Aerogel1g  

Total mass of RALPH 672g  

Items Price

Film $12.00

Digital video camera$60.00

2 Radiation badge, dosimeter$0.00

Pen camera$15.00

Peep hole, fisheye$5.00

Cord tube and fixtures$3.00

UV filters, 3$20.00

Carbon fiber rod$7.00

Solar Cells$40.00

Space blanket$2.00

Blank circuit board$0.10

Resistors$0.05

Zip Ties$2.00

Heavy duty Velcro $2.00

Miscellaneous, shipping$20.00

Dry Ice$10.00

Total $198.15

Date Event

10/10/06 In class, electronics, systems, science integration

10/10/06 After class meeting- power limitations, power cold test

10/12/06 Team meeting, discussion, sub-systems meeting, tests

10/13/06 Weigh-in of all components, power needs

10/17/06 CDR due

10/17/06 After class meeting, subsystems build, tests

10/19/06 After class meeting, subsystems build, tests

10/20/06 Weigh-in of all components, power needs

10/24/06 In class work, finalize systems/structure integration

10/24/06 After class meeting, subsystems build, tests

10/26/06 After class meeting, tests

10/27/06 Weigh-in, power test, systems test, finish RALPH

10/28-31/06

Test, modify if necessary, all systems and componentsDesign new test to fit RALPH’s needs, Finish construction

11/1-10/06 Test all systems, analyze, weigh in, clean components

11/12/06 tests of power and systems, install moisture control

Test Date Component Tested Testing Style

10/10/06 Main Structure Frame Drop Test, Pull, Whip, Kick test

10/12/06 Retesting of Main Structure Drop Test, Pull, Whip, Kick test

10/16/06 Retest Structure, analyze boom arm Drop/Pull, whip

10/17/06 Electronics Systems, Solar Cooler Test, Special cooler lid for solar, Power surge test

10/19/06 All Components Drop, Pull, Whip, Cooler, Kick

10/21/06 All systems Cooler, Surge, Cooler/Surge/Drop

Whip - Passed

Yank - Passed

We pretty much failed the drop test because the flight cord managed to rip through the box, even though it landed on its side?!?!

Therefore we will be increasing the surface area on the flight cord to the box to reduce the force by using a washer.

We have not conducted our cooler test yet because we have not received our Aerogel insulation yet. We will have it sometime this week and will test this weekend. However, we hope to see that the radiation badge and the pen cam work at -80 degrees C. Also, we are assuming that the tri-layer insulation of space blanket and Aerogel will keep our interior temperature above 0 degrees C.

Radiation badge – The radiation badge will survive the landing and be in good enough condition to be processed.

Boom arm – The boom arm is critical because it not only deploys the pen cam, but it also removes the lid to the Aerogel. Because the timing on the servo is controlled by the BASIC Stamp, we expect the deployment and retraction of the boom to go as expected.

Aerogel insulation – We are using Aerogel to insulate our satellite. The Aerogel is good to -200 degrees C. Therefore we expect the internal temp to stay above 0 C.

Solar Cells – After some calculations from David, we learned that the solar cells will be most affective when placed on the side of the satellite. By doing so, we hope to see that they were capable of powering the heating circuit and the boom arm servo.