VERTIGO2 Preliminary Design Presentation October 27, 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 Tebo Leburu Prateek Mohan Calvin Turzillo Programming Group Chris Fernando Prateek Mohan Mimi Phan Ryan Strauss Duro Taylor Web Group Prateek Mohan Ryan Strauss Communications Group Calvin Turzillo Jeff Laub 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.

Project Background Previous Accomplishment  Geometric designs developed  Aerodynamic models developed  Completed VERTIGO prototype airframe Previous Design Problems  Time  Insufficient tilting design  Improper center of mass configuration  Too heavy Aircraft Geometry and Specifications Tip-to-tail length: 7’2” Fuselage length: 2’10” Boom length: 3’11” Wingspan: 6’ Fuselage max width:6” Tail width: 3’1” Dihedral:5 degrees Airfoil section:NACA 0012

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

Concept Vertigo concept art by Luke Alexander

Design Option 1 Microchip selection PIC 16F Family uses only 35 RISC instructions The 16F PIC only has 2 PWMs Maximum frequency of 20 MHz PIC 18F Family PICBasic, second party software in C or Java Maximum frequency of 40 MHz consume less power serial and I²C communication 8 PWMs built on More memory 1 vs 2 Microchips less power consumption weight reduction PICs communicate with one another simpler programming

Design Option 2 Flight control input device (RC controller vs. Laptop control) RC Controller Pros. Ease of control for Pilot Controller is available from previous year’s VERTIGO Cons. Controller needs to be re-programmed to interface with the on- board flight system For the above, the controller would need to be pulled apart to determine its capability. Difficult to program No visual feedback for control of craft Limited time, Unlimited specs Laptop & Joystick Pros. Better piloting interface Joystick need not be programmed as code exists on the laptop Laptop displays live video from the camera on-board the plane making piloting the craft easy Cons. Pilot needs to be trained in joystick operation Time-lag in communication between ground station and on- board system.

Design Option 3 Flight mode transition mechanism (Linear actuator vs. stepper motor)

Specifications Summary Taking into consideration all 3 options mentioned previously 1PIC 18F4431 microprocessor MHz Serial Transmitter 1433 MHz Serial Receiver 1 Wireless camera w/ receiver 1Ground based controller V LiIon battery packs Program code will be written in PICBasic Pro. TTL logic design 9600 baud transfer rates across RS232 protocol

Project Budget ItemQuantityPriceCostVendor PIC Microcontrollers5$9.58$47.90Microchip Serial Receiver1$ Serial Transmitter1$ Joystick2$150.00$300.00CompUSA or Best Buy Software1$ ECE Materials1$ AE/MAE Materials1$ Battery Charger1$ Servos4$40.00$160.00Towerhobbies.com Geared Tilt Motor1$ Towerhobbies.com Gyroscope1$ Motor Controls2$240.00$480.00Towerhobbies.com Lithium Ion Batteries (per cell)15$15.00$225.00Towerhobbies.com Communications (misc)1$ Printed Circuit Boards (assembled)2$150.00$ $

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

Questions?