Critical Design Review вЂњThe Distribution of Ionizing Radiation with AltitudeвЂќ Left to Right: Izzy S.Tom L.James Z.Dr. Marintsch Youssef B.Paul T. Randall H. Aldo F. Not in Photo: Audio Visual Payload Construction Head Mentor Program Manager Rocket design Safety Outreach/Publicity Mr. D. Laney, Mr. M. Loughlin St. Thomas High School, Houston, TX http:// rocketry.sths.org Agenda вЂў вЂў вЂў вЂў вЂў вЂў вЂў вЂў вЂў вЂў вЂў вЂў Mission Statement and Goals Project Update Launch Vehicle and Payload Summary Vehicle Body System Propulsion System Recovery System Payload System Scale Launch Payload Experiment Planning of System Tests Safety Budget and Outreach 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 вЂўReach an altitude of one mile. вЂўPayload records data on ionizing radiation. вЂўBoth parachutes deploy at predetermined altitudes. вЂўLand within one square mile. вЂўRocket retrievable with payload intact. вЂўShed light on radiation variation with altitude. Project update Work done since PDR вЂў Removed canards and shortened the fins in the rocket design вЂў Built and successfully launched the scale model вЂў Testing of rocket electronics вЂў Successful usage of dual deployment вЂў Established a plan with the school advancement office for acquiring funds from school alumni Work still to be done вЂў Building full-scale rocket вЂў Modifying fins вЂў Setting up payload вЂў Fiberglass the tubes launch vehicle and payload summary Vehicle: Length - 90вЂќ Diameter - 5.40вЂќ Motor - K560W Mass with Motor - 10,078 g Stability Margin - 2.53 Launch System - 1.5вЂќx1.5вЂќ (10вЂ™) Recovery: Drogue вЂ“ 28вЂќ at Apogee Main вЂ“ 120вЂќ 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. SYSTEMS Vehicle Body Propulsion Recovery Payload (1) Vehicle Body System |---------------------------------------||--------------------------------||------------------------------------| Nose Cone & Upper Body Tube Middle Body Tube (Payload) Lower Body Tube вЂўModified LOC Precision Magnum 3e вЂўThree Body Tubes (5.40вЂќ- size needed for payload) Lower (31вЂќ) вЂ“ K560W, Drogue, G10 Fins, Camera Middle (28вЂќ) вЂ“ Payload Bay Upper (11вЂќ) вЂ“ Main Chute вЂўNose Cone (21вЂќ) GPS Transmitter (2) Propulsion System вЂўMotor: Aerotech K560W вЂўThrust / Weight: 5.7:1 (Thrustcurve) [560N / (10 kg x 9.8m/s )] 5.1:1 (Rocksim) [497N / (10 kg x 9.8m/s )] 2 2 вЂўVelocity off Launch Rod: 59.3 ft/s вЂўRail Length: 10 ft вЂўBurn Time: 4.6 s (3) Recovery System Drogue Chute вЂў 28вЂќ LOC Precision вЂў Deployed at Apogee (18.8 s) Main Chute вЂў 120вЂќ Public Missiles вЂў Deployment at 1500 ft (70.8 s) Redundancy Plan вЂў 2 Perfectflite Dual Deployment Altimeters вЂў Each one will connect to a drogue and main ejection charge Landing вЂў Landing at 162 s вЂў Velocity at Landing: 16.8ft/s(V); 10.3ft/s(H); 19.7ft/s(M) (4) Payload System пѓ Top view пѓ Side view (4) Payload System Within Middle Body Tube вЂўBay #1 - Geiger Mueller Tubes with Circuit board and Processor. вЂўBay #2 - Gamma-Scout Geiger Counter. вЂўBay #3 - Two Altimeters вЂ“ Linked to ejection charges at either end of Payload Bay. Within Nose Cone вЂўGPS Transmitter Outside of Lower Body Tube вЂўVideo camera (4) Payload Set-Up Scale Launch Scale Model вЂў ВЅ Scale вЂў G80 motor Launched with вЂў 2 Perfectflite Dual Deployment Altimeters вЂў Booster Vision camera Results вЂў Reached an altitude of 1098 ft. вЂў Successfully deployed 2 parachutes Scale Launch Pictures Scale Launch Pictures 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. payload experiment пѓџFull scale tube array construction Testing of пѓ GammaScout пѓџPlanned tube array design Prototype пѓ array of five tubes payload experiment Significance (1) Radiation is measured with altitude using 12вЂќlong Geiger Mueller Tubes expected to record up to nearly 500 cpm over 140 s of descent and 19 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. payload experiment Electronic usage Gamma Scout вЂ“ Because of a long measurement interval time, the GammaScout will primarily be used for calibrating the Geiger Muller tube array Tube Array- Will be used as our primary data source when interpreting and graphing the data. System testing Tested вЂўGPS вЂ“ Locality tracking. вЂўCamera вЂ“ Video testing. вЂўVehicle вЂ“ Scale model launch. Testing вЂўPayload вЂ“ Geiger Counters and (a) consistency of data collection, (b) background counts, (c) isolation of ray sources. Will Test вЂўRecovery вЂ“ Ejection charges and chute deployment. Safety and RF Signals. вЂўPropulsion вЂ“ (a) Inspection of parts, (b) assembly supervision. safety plans Prior to each project phase: Review system risks and mitigations. Review Safety Codes. Pass test on Safety Procedures. Sign Safety Statement. budget and outreach Budget Current major purchases вЂў Geiger Counter with data storage ($445) вЂў Geiger Mueller tubes ($200) вЂў 120вЂќ parachute ($190) Imminent Purchases вЂў Five additional GM tubes ($570) вЂў Rocket Parts ($295) вЂў GPS System ($450) вЂў Video camera ($100) Subtotal $1680 Subtotal $570 Outreach вЂў Collaboration with school advancement office вЂў Current preparation of Informational Flyers/Brochures. вЂў Formulation of presentation/workshop strategies.