2016 Northwest Indian College Space Center First Nations Launch Tribal Division Critical Design Report

Transcription

1 2016 Northwest Indiann College Space Center First Natio ons Launch Tribal Division Critical Design Report

2 Northwest Indian College Space Center 2016 FNL Preliminary Design Report for Tribal Competition Team Space Jam I.0 Science Payloads Each experiment will measure a physical feature of the rocket before, during, and after the flight envelope. We predict that each will have similar graphs in that there will be a period of: relative inactivity until ignition, a great deal of activity throughout the motor burn some activity during the coast phase a great deal of activity from drogue deployment some activity during drogue descent a great deal of activity from main deployment some activity during main descent a considerable amount of activity from ground impact, and some minor activity while resting on the ground The experiment package will be mounted in the payload section between the nose cone and the main parachute bay. The Arduino micro-controller, vibration detector, and the sound detector will be housed in a custom package that will be securely mounted in the payload bay. The sound sensor will have access to the outside of the rocket so that it can monitor all sounds associated with the rocket s flight. Power for the vibration and sound experiments will be a single 9v battery. The Arduino uses approximately 46.5mA. A standard 9V battery has about mah capacity which means that we should be able to run the experiments for nearly 9 hours before battery failure. The payload with its experiments will be activated by an external keyed switch. There is nothing special needed at the launch pad as the payload is entirely self-contained and will be mounted prior to moving to the launch rail. The payload will be activated just prior to arming the altimeters. II.1 Experiments II.1a Data Collection The data will be stored on SD card in an Adafruit Data Logging shield for Arduino. We will be using a 16gb SD card. Data will be collected over a 10 minute period starting at setting up the rocket on the launch rail and stopping a few minutes after touchdown. Rocksim predicts a 79 second flight profile. Data points will be collected at 0.5 seconds for a total of 1,200 data points. The data will be stored in a text file that can be read by any text reading program such as Excel which will provide data analysis capabilities. NWIC Space Center Critical Design Report 2016 Tribal Division 1

3 II.1b Vibration Monitoring, The sensor we will use to detect vibration is a LDT0-028K piezo vibration sensor from Measurement Specialists (MEAS). The sensors are a thin strip of piezoelectric material with a rivet in the end acting as a weight. When there is a vibration, the weight moves, stressing the piezo material that produces a spike in voltage. We are going to connect this vibration sensor to an Arduino which can read and detect these voltages that the sensor creates when there is vibration. II.1c Sound Monitoring, The sound detector sensor is from sparkfun.com (SEN-12642) that combines a microphone and some processing circuitry. The heart of the Sound Detector is the electric microphone capsule which converts acoustic energy into electrical energy. It provides an analog representation of sound amplitude. It will be connected to the Arduino through the data logging shield. II.1d II.2 Potential Additional Experiments that May be Attempted Velocity recording, Altitude recording, Vertical Acceleration recording, Lateral (X & Y axes) Acceleration recording, and, Rotational Rate of Change (X, Y, & Z axes) recording. Design and Testing At the time of this writing, the data collection board and the prototype vibration sensor are functional. Vibration data is collected and stored on the SD card. The SD card, when placed in an SD reader, will transfer the data to Excel during bench testing. The sound monitoring device is nearly complete and we expect to have the prototype finished by this weekend. II.2a Work to be Done and Potential Improvements The electronics are nearly finished and the programming is 85% complete. The physical placement, mounting, and protection remain. We are working on several improvements: 1. Copy the data to a new file prior to starting so that data doesn t get over written, 2. Automatically start the data collection 30 seconds before launch 3. Transmit some of the data to a ground station while in flight. II.0 Design of Marvin NWIC Space Center Critical Design Report 2016 Tribal Division 2

4 II.1 Dimension ns Airframe: Blue tube Rocket length: 82.5inches Maximum diameter of the rocket: 4 inches Nosecone: 20.5 inches fiberglass Ogive Fin span: 111 inches Fins: 3-1/4" aircraft grade plywood Launch lug buttons: large Motor: Cesaroni Technology Inc (CTI) J335-RL or J3000 Classic III.0 Estimated Altitude Until we have the rocket constructed, we won't know the actual weight in order to- altitude of optimize our Rocksim simulation. Currently, Rocksim predicts a maximumm 3,480 feet with the J335 and 3,728 feet with the J300. Rocksim is somewhat optimistic in its predictions and as previously mentioned, we won't know the all-up weight until it's built. IV.0 Recovery System IV.1 Parachutes Parachute type: Circular Drogue chute diameter: 20 inches Main chute diameter: 48 inches Fire retardantt parachute protectors and dogbarf (wadding) The recovery system will use dual-deployment, with dual initiation-redundancy for each deployment stage (drogue/main). Backup ejection will bee motor ejection set for 15 seconds after ignition. Rocksim indicates that time to apogee is approximately seconds for either motor. The tracking device in our rocket will have GPS capabilities to assist in recovery of the sustainer and a sound device will also be installed. V.0 Pre-launc h Check Lists and Personnel Responsibilities V.1 Pre-Launc h and Science Check Lists Appendices A - F NWIC Space Center Critical Design Report 2016 Tribal Division 3

5 Masking Tape Various screw drivers Miscellaneous nuts and bolts Extra starters Extra shear pins Various plyers Box cutter Zip ties Extra 9v batteries Sandpaper Cell Phone (off) Phone Numbers Writing Pad Pencils/Pens Flight Card Mosquito Repellant (seasonal) Video/Still Camera Appendix A - GSE Check List Appendix-1

6 Appendix B - Ebay & Recovery System Check List Recovery System Preparation Recovery System, Drogue Chute: - Check all connections. Insure all devices are in good condition and properly secured: Ebay recovery harness to drogue Nose cone to harness Fold drogue chute per manufacturer's instructions. Drogue into burrito Insure shroud lines are free from tangles. Insure all quick links are secure. Insert ejection charge protection (dog barf). Insert folded and protected chute into drogue recovery compartment. Recovery System, Main Chute - Check all connections. Insure all devices are in good condition and properly secured: Connect recovery harness to ebay Fasten, in order, main parachute, bulkhead, protective container, MV, after tow line, fin can Fold main chute per manufacturer's instructions. Main into burrito Insure shroud lines are free from tangles. Insure all quick links are secure. Insert ejection charge protection. Insert folded and protected chute into recovery compartment EBay & Black Powder Ejection Charges Wear eye protection whenever working with Black Powder! Prepare avionics #1 Be sure all arming switches are off. Install battery in altimeter. Secure battery in place with positive battery retention system. Altimeter properly programmed and verified. Connect aft pyrotechnic leads to electronic deployment device. Connect forward pyrotechnic leads to electronic deployment device Prepare avionics #2 Be sure all arming switches are off. Install batteries in altimeter. Secure batteries in place with wire ties and tape. Flight computer properly programmed and verified. Connect aft pyrotechnic leads to electronic deployment device. Connect forward pyrotechnic leads to electronic deployment device Appendix-2

7 Black Powder, drogue Trim electric match to an appropriate length. Remove at least an inch of insulation from each lead Short electric match leads Insert electric match into BP container Pour measured amount of BP into BP container Tape over the BP container with tape to make certain that no BP escapes Repeat for the secondary BP container Insert external disarming mechanisms to insure all electronically discharged pyrotechnics are disabled until final launch readiness. Connect electric match leads to appropriate connecting posts for each altimeter Black Powder, main Trim electric match to an appropriate length. Remove at least an inch of insulation from each lead Short electric match leads Insert electric match into BP container Pour measured amount of BP into BP container Tape over the BP container with tape to make certain that no BP escapes Repeat for the secondary BP container Insert external disarming mechanisms to insure all electronically discharged pyrotechnics are disabled until final launch readiness. Connect electric match leads to appropriate connecting posts for each altimeter Mount ebay into rocket, checking external disarming mechanisms are in place. Insure all black powder electronic devices are in disarmed mode during EBay final installation. Note: All pyrotechnic devices must remain in an unarmed mode until rocket is on pad ready to launch. Appendix-3

8 Appendix C - Motor and Launch Preparation Check List Motor preparation Be sure that motor is clean Open reload package Read the instructions Identify all of the parts to make certain that they are all there. If not, contact the Safety Officer Grease motor liner Insert propellant grains Tighten nozzle Keep black powder charge if using motor ejection OR o Remove black powder from motor forward end of reload o Seal ejection charge hole with grease Insert reload into motor Fasten retaining device Tape igniter to rocket airframe Discard trash properly Launch team transports rocket to assigned launch pad Appendix-4

9 Appendix D - Final Launch Preparation Check List Tools to launch pad Multi bit screwdriver Sandpaper Wire strippers Masking tape Small screwdriver Razor knife Setup on launcher Verify pad power is OFF Slide rocket on to rail guide Raise rail guide and position vertically as desired Remove safety restraints from altimeter switches Altimeters beeping with correct sound sequence Cameras on Igniter installation After rocket is on the launch rail and after the altimeters are turned on then, Strip at least an inch of insulation from the igniter leads Make certain that igniter leads are shorted out to prevent accidental ignition Straighten igniter leads Insert igniter through the nozzle to the top of the motor Retain with plastic nozzle cap Short alligator clips to check for unpowered igniter wires Clamp clip of igniter lead and wrap excess igniter lead wire around alligator clip Repeat for second igniter lead. Wrap some of the igniter lead around the launch pad to make certain that there is no tension on the igniter leads that might cause it to fall from the rocket. Dispose of trash properly Final Launch Sequence Insure Flight Witnesses are in place and ready for launch. Arm all devices for launch. Return to Safe Area Ready cameras Signal LCO & RSO that rocket is ready for launch. Countdown and launch Misfire Procedures Wait 60 seconds per NAR/Tripoli prior to approaching launch pad Safe all pyrotechnics to pre-launch mode. Remove failed igniter Resume checklist at "Final Launch Preparations/Prepare Igniter." Appendix-5

10 Appendix E - Post Recovery Check List Normal Post Flight Recovery Take at least five photographs of the rocket and its components BEFORE touching and moving it Check for non-discharged pyrotechnics. Safe all ejection circuits. Remove any non-discharged pyrotechnics. Flight Failure Checklist Take at least five photographs of the rocket and its components BEFORE touching it Disarm all non-fired pyrotechnic devices. Continue Normal Post Flight Recovery procedures. Carry the pieces back to the staging area with great solemnity and respect. Experiment Data Collection Checklist Remove data collection device from payload bay Remove SD card/usb Flash drive Transfer data to laptop Submit SD card/usb Flash drive to Data Collection Personnel Appendix-6

11 Appendix F - Science Payload Check List Sound and Vibration Check Battery Voltage to be greater than 8 volts Ensure that SD card is seated securely and restraining clamp is in place Check all soldered connections for any anomalies Check sound detector is mounted securely Check vibration detector is mounted securely Close experiment housing Insert experiment into payload bay Fasten payload bay to rocket Appendix-7