UNC Charlotte 2017-2018 NASA Student Launch Competition Critical - PowerPoint PPT Presentation

Payload Housing Dimensions 61

Housing Internal Dimensions 62

Housing Vehicle Integration ● The servo and coupler system allows the housing to flex while rotating to prevent binding ● The coupler is the interface between the payload and altimeter bay 63

Housing Vehicle Integration ● The raised shoulder of the housing sits flush with the bushing, which will be epoxied to the airframe ● This acts to retain the housing through flight 64

Payload Housing Component Placement 65

Payload Housing Electrical Design 66

Orientation Algorithm 67

Payload Performance Predictions Leadscrew Thrust Calculations: For a safety factor of 10, and assuming the selected motor will be operating at half of no-load speed, the required motor torque is approximately 275 oz-in. 68

Payload Performance Predictions Rotational Torque Calculations: Substituting in a total mass of the housing and internal components (including the 3.8 lb rover) of 10 lbm with a diameter of 5.645 and a desired rotational acceleration the total torque necessary is approximately 3 oz-in. 69

Payload Performance Predictions Rover Torque Calculations: To achieve the appropriate safety factor, the rated output torque of each motor should be on the order of 125 oz-in 70

Testing Plan 71

Testing Plan - Rover Test Test ID Test Description Test Test ID Test Description The rover will be tested on The full rover software will controlled and uncontrolled be tested in controlled and Maneuverability surfaces to assess RT1 Autonomy Testing RT5 uncontrolled environments Testing maneuverability in adverse to verify autonomy and conditions and driving assess system performance failure modes The full rover software will Integration of the rover and Integration and Sensor Fidelity be run during platform tests the leadscrew system will RT2 Deployment RT6 Testing to assess sensor noise and be tested to ensure rover Testing data acquisition rates retention and deployment The NDTS software will be The rover will be flown tested and compared to during the full-scale test Dead Reckoning actual rover performance to RT3 Flight Testing RT7 flight to ensure the system Testing assess system reliability in can survive launch and determining the rover's landing forces position. The ODAS software will be Object Detection tested and to assess object RT4 Testing detection capabilities and limitations 72

Testing Plan - Housing Test Test ID Test Description The housing orientation software will be Re-orientation HT1 tested on the subscale and full-scale housing Testing to assess orientation accuracy The XBee transmitter used to initiate the Signal deployment protocol will be tested on the Acquisition HT2 subscale and full-scale flights to verify Testing functionality and assess limitations A subscale housing will be manufactured, Sub-Scale installed, and flown in the subscale to ensure HT3 Flight Test the system can survive launch and landing forces The housing will be flown on all full-scale Full-Scale HT4 flights to ensure the system can survive Flight Test launch and landing forces 73

Testing Plan - DMS Test Test ID Test Description The DMS software will be tested and flown Sensor Fidelity on all full-scale launches to assess sensor DT1 Testing noise, data acquisition rates, and state update rates Hardware-in-loop testing will be done to HIL Testing DT2 verify algorithm functionality and robustness to adverse conditions Two full-scale flights will be used to determine the altitude attenuation Braking Power DT3 capabilities of the DMS and the factor by Testing which the DMS increases the vehicle's coefficient of drag A fully functioning DMS will be flown and Flight Testing DT4 actuated to assess braking algorithm accuracy in reaching 5,280 ft. 74

Testing Plan - Vehicle Test Test ID Test Description Test Test ID Test Description All bulkhead assembly configurations will Ground separation testing will be Bulkhead be pulled to failure on an Instron to Sub-Scale Vehicle performed with the calculated black VT1 Assembly Failure VT5 assess failure modes and safety factors Separation Testing powder charge sizes to ensure Testing of recovery connection points to the separation and verify calculations vehicle The sub-scale and full-scale parachute The subscale vehicle will be flown with a Sub-Scale Vehicle Recovery Drop reefing systems will be drop tested to VT2 ballasted configuration to verify vehicle VT6 Control Flight 1 Testing assess opening speeds and forces and stability and safety through flight to verify system functionality and safety The subscale vehicle will be flown with Ground separation testing will be the subscale housing in place to verify Sub-Scale Vehicle Full-Scale Vehicle performed with the calculated black VT3 simulation accuracy and to acquire data VT7 Test Flight 2 Separation Testing powder charge sizes to ensure that will be used to estimate the separation and verify calculations full-scale vehicle coefficient of drag The subscale vehicle will be flown with The full-scale vehicle will be flown in a the subscale housing in place to verify Sub-Scale Vehicle Full-Scale Vehicle ballasted configuration to verify flight VT4 simulation accuracy and to acquire data VT8 Test Flight 3 Control Flight 1 stability and safety before flying the fully that will be used to estimate the integrated configuration full-scale vehicle coefficient of drag 75

Testing Plan - Vehicle Cont. Test Test ID Test Description The full-scale vehicle will be flown in a Full-Scale Vehicle fully integrated configuration to verify VT9 Braking Test Flight 2 simulation accuracy and test the stability of the vehicle The full-scale vehicle will be flown in a Full-Scale Vehicle fully integrated configuration to verify VT10 Test Flight 3 simulation accuracy and test the stability of the vehicle The GPS telemetry system and RF Vehicle Telemetry tracker will be flown on all full-scale VT11 and Tracking Testing launch vehicles to ensure system functionality and vehicle recovery 76

Safety 77

Safety - Personnel Hazards Complete Table located in Sec. 4.3.2 78

Safety - Environmental Complete Table located in Sec. 4.3.4 79

Safety - Environmental Complete Table located in Sec. 4.3.4 80

Safety - FMEA Complete Table located in Sec. 4.3.3 81

Safety - FMEA Complete Table located in Sec. 4.3.3 82

Safety - FMEA Complete Table located in Sec. 4.3.3 83

Safety - FMEA Complete Table located in Sec. 4.3.3 84

Safety - FMEA Complete Table located in Sec. 4.3.3 85

Safety - Final Assembly Procedures 86

Safety - Subscale Checklists Subscale Launch 2 Subscale Launch 3 87

Project Plan 88

Project Plan - Requirements Verification 89 Complete Tables located in Sec. 8.1.1

Project Plan - Requirements Verification 90 Complete Tables located in Sec. 8.1.1

Project Plan - Requirements Verification 91 Complete Tables located in Sec. 8.1.1

Project Plan - Requirements Verification 92 Complete Tables located in Sec. 8.1.1

Project Plan - Requirements Verification 93 Complete Tables located in Sec. 8.1.1

Project Plan - Requirements Verification 94 Complete Tables located in Sec. 8.1.1

Project Plan - Requirements Verification 95 Complete Tables located in Sec. 8.1.1

Project Plan - Requirements Verification 96 Complete Tables located in Sec. 8.1.1

Project Plan - Requirements Verification 97 Complete Tables located in Sec. 8.1.1

Project Plan - Requirements Verification 98 Complete Tables located in Sec. 8.1.2

Project Plan - Requirements Verification 99 Complete Tables located in Sec. 8.1.2

Project Plan - Requirements Verification 100 Complete Tables located in Sec. 8.1.2