VERTIGO 2 Critical Design Presentation December 1, 2004.
-
Upload
gwendoline-mcdowell -
Category
Documents
-
view
215 -
download
0
Transcript of VERTIGO 2 Critical Design Presentation December 1, 2004.
VERTIGO2 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 NairLuke Alexander (Project Leader)
CS Team
Chris Fernando
VERTIGO² Project Manager
Luke Alexander
VERTIGO² Project Manager
Luke Alexander
ECE CoordinatorMimi Phan
ECE CoordinatorMimi Phan
Circuitry GroupKevin Boyce
Calvin TurzilloPrateek MohanTebo Leburu
Jeff Laub
Circuitry GroupKevin Boyce
Calvin TurzilloPrateek MohanTebo Leburu
Jeff Laub
Programming GroupRyan Struass
Prateek MohanMimi Phan
Duro TaylorChris Fernando
Programming GroupRyan Struass
Prateek MohanMimi Phan
Duro TaylorChris Fernando
Web GroupPrateek Mohan
Mimi Phan
Web GroupPrateek 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 ElementTest Point Location
Purpose
Testing Summary
Test Equipment
Servo-motor/ controller module
Solder points Check for correct wiring.
Check solder points, and measure voltage.
Multimeter
Communications
Ensure that the right signals are being sent to the servos.
Send signals, and observe response.
Joystick Ensure the joystick is communicating with the laptop.
Observe coordinates from output.
Laptop
Transmitter/Receiver module
Serial Ports Ensure 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 $29.68
12 $354.06 $29.50
27 $719.95 $26.66
51 $1,259.02 $24.69
102 $2,382.38 $23.36
300 $6,724.76 $22.42
501 $10,964.22 $21.88
1002 $21,469.12 $21.43
%58.5100.51$
31.26$
00.51$
69.24$00.51$
Cost and Gross Margin
Gross Margin
Bill of Materials
Item Quantity Price Cost Vendor
PIC Microcontrollers 1 $9.58 $9.58 Microchip
HVW Serial Receiver 1 $88.95 $88.95 HVW Technologies
HVW Serial Transmitter 1 $58.95 $59.95 HVW Technologies
Saitek X45 Digital Joystick and Throttle 1 $79.99 $79.99 Best Buy
Software 1 $300.00 $300.00
ECE Materials 1 $250.00 $250.00
AE/MAE Materials 1 $200.00 $200.00
Battery Charger 1 $119.00 $119.00 Tower Hobbies
JR4131 Servos 2 $159.98 $319.96
JR3121 Servos 2 $159.98 $319.96
Hacker C50-13L Motor 2 $188.00 $376.00
Hobbico CS-80 Servo 1 $159.98 $159.98
Hacker Master 77-3P Opto Motor Controller
2 $219.00 $438.00
11.1 Lithium Ion Batteries (per cell) 8 $58.95 $471.60 Batteries America
3.71 Lithium Ion Batteries (per cell) 20 $14.95 $299.00 Batteries America
Astro Flight Cobalt 40 Geared Motor 1 $169.95 $169.95 Tower Hobbies
Printed Circuit Boards (assembled) 2 $29.68 $59.36
$3192.46
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
Name Hours Worked Hours Budgeted Percentage Worked
Mimi Phan 66.5 72 92.36%
Kevin Boyce 31.5 72 43.75%
Jeff Laub 12 72 16.67%
Tebo Leburu 25 72 34.72%
Prateek Mohan 32 72 55.56%
Ryan Strauss 20.75 72 28.81%
Duroseme Taylor 20 72 27.78%
Calvin Turzillo 31 72 43.06%
Total 99.5 576 43.26%
Questions?