1. Preliminary Design Review “The Distribution of Ionizing Radiation with Altitude” Left to Right: Tom L.- Payload James Z.-Construction Izzy S.- Audio Visual Youssef B.- Program Manager Dr. Marintsch - Head Mentor Randall H. - Safety Aldo F. - Outreach/Publicity Paul T. - Rocket design Not in Photo: Mr. D. Laney, Mr. M. Loughlin St. Thomas High School, Houston, TX http:// rocketry.sths.org

2. Agenda Mission Statement and Goals Launch Vehicle and Payload Summary Vehicle Body System Propulsion System Recovery System Payload System Payload Experiment Planning of System Tests Safety Budget and Outreach

3. mission statement and goals Mission Statement Our mission is to supply accurate data about cosmic radiation by building a safe and functioning rocket that can provide ample time for data collection. Goals Reach an altitude of one mile. Payload records data on ionizing radiation. Both parachutes deploy at predetermined altitudes. Land within one square mile. Rocket retrievable with payload intact. Shed light on radiation variation with altitude.

4. launch vehicle and payload summary Vehicle: Length - 90”Mass with Motor - 10,038 g Diameter - 5.40”Stability Margin - 2.11 Motor - K560WLaunch System - 1.5”x1.5” (10’) Recovery: Drogue – 28” at Apogee Main – 120” at 1500 ft. Payload Experiment Summary: Measure levels of cosmic radiation with altitude through the use of Geiger Mueller Tubes whose data will be correlated with time and altitude.

5. SYSTEMS Vehicle Body PropulsionRecoveryPayload

6. (1) Vehicle Body System Modified LOC Precision Magnum 3e Three Body Tubes (5.40”- size needed for payload ) Lower (31”) – K560W, Drogue, G10 Fins, Camera Middle (28”) – Payload Bay, Canards Upper (11”) – Main Chute Nose Cone (21”) GPS Transmitter

7. (2) Propulsion System Motor: Aerotech K560W Motor: Aerotech K560W Thrust / Weight: 5.7:1 (Thrustcurve) [560N / (10 kg x 9.8m/s 2 )]Thrust / Weight: 5.7:1 (Thrustcurve) [560N / (10 kg x 9.8m/s 2 )] 5.1:1 (Rocksim) [497N / (10 kg x 9.8m/s 2 )] 5.1:1 (Rocksim) [497N / (10 kg x 9.8m/s 2 )] Velocity off Launch Rod:59.5 ft/sVelocity off Launch Rod:59.5 ft/s Rail Length:10 ftRail Length:10 ft Burn Time:4.6 sBurn Time:4.6 s

8. (3) Recovery System Drogue Chute 28” LOC Precision Deployed at Apogee (18.3 s) Perfectflite Dual Deployment Altimeter Main Chute 120” Public Missiles Deployment at 1500 ft (70.8 s) Perfectflite Dual Deployment Altimeter Landing Landing at 158 s Velocity at Landing: 19.3ft/s(V); 10.3ft/s(H); 21.9ft/s(M)

9. (4) Payload System Within Middle Body Tube Bay #1 - Geiger Mueller Tubes. Bay #2 - Circuit Board and Processor, Gamma-Scout Geiger Counter. Bay #3 - Two Altimeters – Linked to ejection charges at either end of Payload Bay. Within Nose Cone GPS Transmitter Outside of Lower Body Tube Videocamera

10. payload experiment Hypothesis After consideration of the effects due to terrestrial radiation, we would expect the counts to increase with elevation as the net absorption of Secondary Cosmic Radiation by the atmosphere decreases.

11. payload experiment Significance (1) Radiation is measured with altitude using 12”- long Geiger Mueller Tubes expected to record up to 400 cpm over 140 s of descent and 18 s of ascent. (2) Radiation levels are suggested to be associated with changes in atmospheric conditions (such as cloud formation and global warming; chlorine production and ozone depletion) (3) Radiation levels are linked to the breakdown of DNA in organic tissue and so merit further study.

12. planning of system tests Payload – Geiger Counters and (a) consistency of data collection, (b) background counts, (c) isolation of ray sources.Payload – Geiger Counters and (a) consistency of data collection, (b) background counts, (c) isolation of ray sources. GPS – Locality tracking.GPS – Locality tracking. Recovery – Ejection charges and chute deployment. Safety and RF Signals.Recovery – Ejection charges and chute deployment. Safety and RF Signals. Propulsion – (a) Inspection of parts, (b) assembly supervision.Propulsion – (a) Inspection of parts, (b) assembly supervision. Vehicle – Scale model launch.Vehicle – Scale model launch. Camera – Video testing.Camera – Video testing.

13. safety plans Prior to each project phase: Review system risks and mitigations. Review Safety Codes. Review Safety Codes. Pass test on Safety Procedures. Sign Safety Statement. Sign Safety Statement.

14. budget and outreach Budget Current major purchases Geiger Counter with data storage ($445) Rocket Parts ($295) Geiger Counter with data storage ($445) Rocket Parts ($295) Geiger Mueller tubes ($200) GPS System ($450) Geiger Mueller tubes ($200) GPS System ($450) Subtotal $1390 Subtotal $1390 Imminent Purchases 120” parachute ($190) Video camera ($100) 120” parachute ($190) Video camera ($100) Five additional GM tubes ($570) Subtotal $860 Five additional GM tubes ($570) Subtotal $860Outreach Continued exploration of fund raising strategies. Current preparation of Informational Flyers/Brochures. Continued exploration of fund raising strategies. Current preparation of Informational Flyers/Brochures. Formulation of presentation/workshop strategies. Formulation of presentation/workshop strategies.