Maple Seeds Concept Generation Group Members: Clinton Bencsik Mark Brosche Chris Kulinka Chris Redcay

Introduction Customer: Harris Corporation Customer: Harris Corporation Project: Maple Seed-Inspired Sensor array Project: Maple Seed-Inspired Sensor array U.S. Military use U.S. Military use Probably in desert environments Probably in desert environments Very open-ended design specifications Very open-ended design specifications Today Today Existing products and ideas Existing products and ideas Critical Assumptions Critical Assumptions Our Concepts Our Concepts Final design choice Final design choice

Problem Create a sensor housing which incorporates auto-rotating flight Create a sensor housing which incorporates auto-rotating flight Sensors will be dropped from an altitude via aircraft Sensors will be dropped from an altitude via aircraft Purpose Purpose Detect disturbances caused by human or vehicle movement Detect disturbances caused by human or vehicle movement Relay information to centralized computer Relay information to centralized computer

Priority of Sub-problems Sub-ProblemsRank Flight Characteristics 1 Transmitting5 Sensing4 Power3 Durability2

Customer Requirements ENGINEERING REQ. Total Mass Material Fracture Strength Young's Modulus Material Machinability/ Formability Cost Terminal Freefall Velocity CUSTOMERREQCUSTOMERREQ Fall slowly X X Survive fall XX Hold sensors X Retain shape after impact XX X Retain function after impact XX X No moving parts X Auto-rotates like maple seed X X Cost per Seed ~$1500-$2500 XXXXX High$1, UnitskgMpaGpa Dollarsm/s ENGINEERING TARGETS

Existing Products Lockheed Martin (NAV) ~$1.7 million in Nano Air Vehicle Program Program was quietly canceled Maple Seed Copter Toy Uses the principles of maple seed flight

Critical Assumptions Solar powered Solar powered Energy storage Energy storage Auto-rotating flight Auto-rotating flight No moving parts No moving parts Sense human / vehicle presence Sense human / vehicle presence Triangulate disturbance Triangulate disturbance Networking & wireless transmission capabilities Networking & wireless transmission capabilities

Sensor Concepts Customer suggestions Customer suggestions Infrared sensors Infrared sensors Seismic sensors Seismic sensors Other options Other options Microphone sensors Microphone sensors Using sound waves through air & ground Using sound waves through air & ground Accelerometers Accelerometers Used to detect vibration Used to detect vibration Motion sensors Motion sensors

Flight Concepts _ Maple seed (auto-rotating) Maple seed (auto-rotating) Single wing Single wing Double wing Double wing Increased wing area Increased wing area Increased cargo space Increased cargo space Lightweight Lightweight Increases flight time Increases flight time Narrows material selection Narrows material selection

Flight Concepts

Concept Screening Matrix Screening Matrix

Final Design Choice Flight Flight Auto-rotating single wing sensor housing Auto-rotating single wing sensor housing Sensing Method Sensing Method Combination microphone and IR sensor Combination microphone and IR sensor Material Selection Material Selection SDM housing with possible carbon fiber wing SDM housing with possible carbon fiber wing Power Power Solar power with either a charged battery or capacitor Solar power with either a charged battery or capacitor Transmission Transmission Wi-fi data transmission Wi-fi data transmission

Conclusion Used Customer needs to determine problems and sub-problems Used Customer needs to determine problems and sub-problems Sorted sub-problems by importance and compared them to our concepts to determine final design Sorted sub-problems by importance and compared them to our concepts to determine final design

Future Plans Build prototypes for flight tests Build prototypes for flight tests Find proper ratio of weight to wing span Find proper ratio of weight to wing span Test microphones for disturbance sensitivity Test microphones for disturbance sensitivity Design a basic circuit for amplifying disturbance signal Design a basic circuit for amplifying disturbance signal Test battery vs. capacitor Test battery vs. capacitor Which will work better in extreme environment conditions Which will work better in extreme environment conditions Find maximum achievable power using mini solar panels over small surface area Find maximum achievable power using mini solar panels over small surface area THANK YOU FOR LISTENING!!!