University of Minnesota NASA USLI Presentation 10-29-2012 - - PowerPoint PPT Presentation
University of Minnesota NASA USLI Presentation 10-29-2012 University of Minnesota: 2012-2013 USLI 1 Preliminary Design Review Objectives Design a rocket to reach apogee at 1 mile Deploy a drogue and main chute Deploy a payload on
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Characteristic Value Max Altitude (Without Airbrakes) 5674 feet Max Mach Number 0.602 Static Margin (After Burnout) 2.87 Corrective Moment Coefficient (After Burnout) 4250 Damping Moment Coefficient (After Burnout) 28 Exit Rail Velocity 71.9076 ft/s Thrust to Weight Ratio 11.247
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Components Quantity Raven3 Featherweight Altimeter 3 Redundant altimeter Entacore AIM USB (front avionics bay) 1 Redundant altimeter Entacore AIM XTRA. The AIM EXTRA also doubles as GPS tracker for Recovery (aft avionics bay) 1 9 Volt Battery 4 Screw Switch 4 Avionics Bay 2
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Component Model Size Deploy Altitude Terminal Velocity Drogue Rocketman Mach II 36” Apogee 65.97 ft/s Main Fruity Chutes Iris Ultra 120 120” 800 ft 14.92 ft/s
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Payload requirement Design feature to verify requirement Verification of completion Payload must not sustain any damage upon landing or deployment from the rocket itself. The rover will have a casing around itself during flight and upon landing. The chassis will be built such that the rover will be able to experience up to 20 G in the rocket. By inspection of the rover it will be clear whether the rover sustained any damage. Also if the rover is not performing certain functions in real time such as the live feed video to a computer, damage could be potentially verified. Successful deployment from the rocket upon landing. The casing will protect the rover until it is deployed
fall off helping in the successful deployment. Black power will be used to deploy the rover safely from the rocket. The verification can be seen by inspection whether the rover was successfully deployed. As there will be an electronic switch to turn the black powder off in case of it not deploying, data will be sent back to see if was deployed or not.
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Payload requirement Design feature to verify requirement Verification of completion The rover is required to perform certain maneuvers during its time on the surface of the
feet forward, rotate 180̊ and move forward 10 feet again. Two high torque servos will be used independently
maneuver the rover. A receiver will obtain the functions from the RC controller and the ArduIMU+V3 will interpret these maneuvers to make the rover move its servos to inevitably move the rover. By inspection if the rover has moved in the desired path. If no command is sent to rover upon deployment for five minutes move to autonomous functions of moving the rover 10 feet forward, rotating 180̊ and moving forward 10 feet. The autonomous function will be programmed into the ArduIMU such that if a signal is not received from the RC controller, it will perform the autonomous functions. If the rover has moved, by inspection it will be shown if it functioned autonomously.
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Payload requirement Design feature to verify requirement Verification of completion There will be a live video feed from the rover to a team member’s computer , A CCD Camera will be mounted on the rover that is able to transmit its video to a team member’s computer via a receiver and patch antenna. If there is camera visual on the team member’s computer, it will be known that the requirement was successfully accomplished. A GPS unit will transmit the rover’s location back to a team member. GPS ArduIMU shield. If there are transmissions from the rover back to a team member’s computer, the requirement will be verified.
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