VERTIGO 2 Critical Design Presentation December 1, 2004

Team Members ECE Team Mimi Phan (ECE Team Leader) Kevin Boyce Jeff Laub Tebo Leburu Prateek Mohan Ryan Strauss Duroseme Taylor Calvin Turzillo AE Team Nikhil Nair Luke Alexander (Project Leader) CS Team Chris Fernando

VERTIGO² Project Manager Luke Alexander ECE Coordinator Mimi Phan Circuitry Group Kevin Boyce Calvin Turzillo Prateek Mohan Tebo Leburu Jeff Laub Programming Group Ryan Struass Prateek Mohan Mimi Phan Duro Taylor Chris Fernando Web Group Prateek Mohan Mimi Phan Team Organization

Introduction VERTIGO—Versatile Exploratory Robotic Tilt-rotor for Information Gathering Operations—is a small dual mode aircraft designed as a VTOL aircraft with the ability to transition to normal horizontal flight. Many different projects have been undertaken to challenge the idea of a dual mode aircraft. The advantages of utilizing both flight modes in one aircraft can be realized with a simple understanding of helicopter aerodynamics—namely the ratio of stability to altitude.

Design and integrate a proper electrical system to ensure functionality Design a simple, sufficient tilting mechanism for the rotor assemblies Perform laboratory testing to verify aerodynamics and functionality Achieve vertical flight and vertical maneuverability Land Objectives Primary Objectives Secondary Objectives Transition to horizontal flight via tilting mechanism Return to vertical flight Land without catastrophe

Technical Overview Base Station: Laptop w/ Joystick and transmitter Onboard Control

System Overview Base Station Laptop: receives serial input from joystick, and send command out serial port to transmitter Joystick: user input Transmitter: serial communication to onboard system Onboard System Receiver: serial communication from base station Microcontroller: interprets signals from receiver and outputs to proper device Servos: control position for airfoils and blade position Motors: spin the propellers Gyro: used for stabilizing aircraft Wireless Camera: not integrated into system-just live video

Circuitry Design

Software Overview PIC Software Written in PIC Basic Pro Continuous loops monitor for changes in servo position and motor speed Base Station Software Written in C++ Takes user input from joystick and converts to a serial signal that PIC can interpret

Reliability, Testability, & Manufacturability How reliable is our product? What is its expected lifetime? How will we test the product? What about manufacturability?

Reliability Microchip’s PIC 18F4431 Microcontroller Excessive Temperatures Random Voltage Spurts Limited Life for Onboard Flash Memory Card (5 to 10 years) Saitek X45 Digital Joystick and Throttle Breakage of Mechanical Parts Limited Life due to Wear and Tear 11.1V 2200mAH Lithium Ion Batteries Chemical Imbalance Deterioration over Time (Batteries can lose charge over time.)

Reliability 433 MHz Dual-Mode RF Transmitter/Receiver Module Excessive Temperatures Random Frequency Transferences Limited Life (5 to 10 years) Possible Problems Limiting Overall Product Life Short Circuits Soldering Errors Dead on Arrival (DOA)

System Element Test Point Location Purpose Testing Summary Test Equipment Servo-motor/ controller module Solder pointsCheck for correct wiring. Check solder points, and measure voltage. Multimeter CommunicationsEnsure that the right signals are being sent to the servos. Send signals, and observe response. JoystickEnsure the joystick is communicatin g with the laptop. Observe coordinates from output. Laptop Transmitter/Receiver module Serial PortsEnsure the serial ports are working. Plug the transmitter/receiver, observe response. PIC (monitor information being received) Power System Charge and Discharge Time Ensure charge lifetime, power output. Charge batteries, measure output and calculate charge time. Voltmeter Test Points

Number of Boards Produced Cost for Production Run Cost Per Board 3$89.03$ $354.06$ $719.95$ $1,259.02$ $2,382.38$ $6,724.76$ $10,964.22$ $21,469.12$21.43 Cost and Gross Margin Gross Margin

Bill of Materials ItemQuantityPriceCostVendor PIC Microcontrollers1$9.58 Microchip HVW Serial Receiver1$88.95 HVW Technologies HVW Serial Transmitter1$58.95$59.95 HVW Technologies Saitek X45 Digital Joystick and Throttle1$79.99 Best Buy Software1$ ECE Materials1$ AE/MAE Materials1$ Battery Charger1$ Tower Hobbies JR4131 Servos2$159.98$ JR3121 Servos2$159.98$ Hacker C50-13L Motor2$188.00$ Hobbico CS-80 Servo1$ Hacker Master 77-3P Opto Motor Controller 2$219.00$ Lithium Ion Batteries (per cell)8$58.95$471.60Batteries America 3.71 Lithium Ion Batteries (per cell)20$14.95$299.00Batteries America Astro Flight Cobalt 40 Geared Motor1$ Tower Hobbies Printed Circuit Boards (assembled)2$29.68$59.36 $

Financial Status Florida Tech Electrical and Computer Engineering Department $200 Florida Tech Mechanical and Aerospace Engineering Department $200 with an additional $400 *Currently in the process of finalizing sponsors and funding.

Budgeted Hours NameHours WorkedHours BudgetedPercentage Worked Mimi Phan % Kevin Boyce % Jeff Laub % Tebo Leburu % Prateek Mohan % Ryan Strauss % Duroseme Taylor % Calvin Turzillo % Total %

Questions?