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Flight Readiness Review

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Intimidator 5: 5 diameter, 10 length, 47 lbs Motor: Aerotech L1300R 4556 N-Sec of impulse Predicted altitude 5203- RockSim 5292 - AeroDRAG Altitude reached can be adjusted by adding or removing weight. Rocket w/out additional weight: 44 lbs

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Thrust to weight ratio= 6.5:1 Well above the suggested 5:1 Launch Rail: 12 ft high Exit velocity - 65 ft/s - RockSim

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Parachute sizes Drogue 3 ft Main 12 ft Parachute descent rates Drogue: Must be between 50 and 100 ft/s 87-90 ft/s RockSim 84.52 ft/s Mathcad Main: Must be between 17 and 22 ft/s 21.1 ft/s RockSim 21.132 ft/s Mathcad

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Static Stability Margin: 4.77 overstable

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Vacuum chamber testing of the R-DAS system and recovery altimeter completed Full scale launch completed on March 19 Ejection charge test completed March 18 Static testing of full scale motor completed on March 18

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Remaining tests: Functional test of assembled payload bay Verify all instrumentation in rocket (April 2) Static tests: Verify ejection charges Vibration test Second Full scale launch at METRA on April 2 (April 10 alternate date for MDRA)

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Results Two altimeter readings: 5123 ft and ~5380 ft Predicted altitude from RockSim: 2806 ft Predicted altitude from AeroDRAG: ~5800 ft Predictions were 10% different from actual First launch: completely successful Second launch: partially successful recovery system

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Vacuum chamber used to re-verify deployment of drogue parachute at apogee and main parachute at predetermined height. Drop in pressure causes altimeter to detect a change in altitude

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Aerotech L1300R S-load cell used Results matched closely to expected values Maximum thrusts of 290 lbs (static test) vs 320 lbs (Aerotech) Further calibration necessary

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Ejection charge amount determined from Modern High Power Rocketry 2 by Mark Canepa Drogue amount 2.5 grams (redundant charge will be 3.75 grams) Main amount 7.5 grams (redundant charge will be 11.25 grams) To verify that the charges will provide adequate force, the rocket was fully assembled with charges Charges were ignited using a battery Rocket successfully separated

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Payload bay acts as coupler for attaching body tubes Dimensions sized with this in mind Materials used will ensure integrity of bay Pressure seal will guarantee accuracy of measurements

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11 Local businesses were contacted One possible sponsor Local middle school students (48) built and launched small rockets A class motors was be used Presentation on rocketry was be given Lafayette hosts an afterschool program for underprivileged children Water bottle rockets will be launched with them

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