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Intercollegiate Rocket Engineering Competition
Spring 2015
EML 4551 - Ethics and Design Project Organization
Team Members
Giancarlo Lombardi Christopher Hayes Maryel A. Gonzalez
OVERVIEW
• Problem Statement• System Level Design Challenges and Goals• Airframe Design• Recovery System Design• Propulsion System Design• Rapid Airbrake Deployment System (RADS)• Computer Simulations• Testing and Validation•Engineering Standards•Curriculum Applications• Global Learning Applications• Team Poster
Problem Statement
• Design and construct a Rocket capable of lifting a 10 lb payload to 10,000 feet above ground level.
System Level Design Challenges and Goals
Propulsion System• Simple Design• Highest Thrust to Weight Ratio
Recovery System• Dual Deployment• Focus on Reliability/Redundancy
Airframe• Lightweight Design• Structural Strength and Integrity• Aerodynamic Performance
Altitude Targeting System• Airbrake parachute• Onboard atmospheric sampling computer
Airframe and Related Components
• Focus on strength material choice– Composite materials vs. Aluminum
• Emphasis on Stability– Placement of center of gravity and pressure
• Structural Integrity– Bulkheads, Fins, Centering Rings
Propulsion System
1. Solid
Three Types to be evaluated
2. Hybrid 3. Liquid
Solid Motor Cross Section View
Liquid Motor Cross Section View
Hybrid Motor Cross Section View
Propulsion System Design Comparison
Solid Motor Hybrid Motor Liquid Motor
Advantages • Simple Design• High-Power
• Simple Design• Low Cost• Controlled Reaction
• High Power
Disadvantages
• Uncontrolled Reaction• Difficult to Simulate• Lower Reliability• Safety hazards
• Lower Power • Complex Design• High Cost
Recovery System
Dedicated Recovery Computer• Commercially available flight computer/altimeter• Logs altitude, velocity, temperature, voltage
Dual Deployment• Drogue Parachute will be deployed at apogee• Main Parachute will be deployed at 1000 feet
Materials• Focus on high strength materials for shock cords, Eye bolts, and Parachutes.
Altitude Targeting System
Custom Flight Computer• Reads and interpolates pressure information to
accurately determine altitude and velocity• Predicts when to deploy air brake in order to
accurately reach 10,000 foot maximum goal
Air-brake Parachute• Rapid deployment parachute packing and ejection
scheme• Airbrake parachute will also double as drogue
Simulation Software
• Rocksim– Obtain theoretical flight profile and rocket stability
Simulation Software – cont.
Solidworks• Modeling
Verification of Geometry
• Simulation Structural External Flow
Ansys• Redundancy Testing
Testing and Validation
• Static Fire Test– Contained burn of rocket
motor to validate expected thrust curve
• Airframe Structure test– Compression load test to
simulate in-flight stresses on airframe
Testing and Validation – cont.
Ground Ejection tests• Purpose: confirm good section
separation to allow parachute ejection
Air Brake System Test• Confirm functionality of air brake
system on a subscale rocket
Curriculum Applications
• Fluid Mechanics• Gas Dynamics– Supersonic speeds, compressible fluid flows, and nozzle design
present• Mechanics of Materials– Appropriate materials must be selected to ensure structural
integrity of rocket during flight
Engineering Standards Observed
• NAR High Power Safety Code• National Fire Protection Association Code for High Power
Rocketry (NFPA 1127) Chapter 2• Federal Aviation Administration Code of Federal Regulations
Part 101 Subpart C• ATF – Federal Explosives Law and Regulations Part 555 • ANSI B11.0 Machinery Safety Standards
Global Learning
• Cost-effective approach to manufacture and assemble rocket, maximizing access for the public
• Strict adherence to established codes and standards to ensure personnel safety
• Using SI / English units
Problem Statement • Design a sounding rocket capable
of launching a 10-pound payload to an altitude of 10,000 feet.
Responsibilities
Intercollegiate Rocket Engineering Competition
Team Member Tasks and Responsibilities
Maryel A. Gonzalez
• Sounding rocket research• Rocket assembly and
testing• Structural analysis • Project fundraising
Christopher Hayes
• Research and design of rocket
• Solidworks modeling and simulations
• Rocket assembly and testing
Giancarlo Lombardi
• Cost-effectiveness analysis of rocket components
• Testing and manufacturing of rocket prototype
• Airframe material analysis
Design Objectives• Minimize Weight• Minimize Cost • Environmentally-friendly fuels
Motivation• Increase access to space for the
public• Develop cost-effective method of
entering space
Timeline
Team Members Faculty advisor
Maryel A. Gonzalez Christopher Hayes Giancarlo Lombardi Dr. Benjamin Boesl
Jan-1
5
Feb
-15
Mar
-15
Apr-
15
May
-15
Jun-1
5
Jul-15
Aug-1
5
Sep
-15
Oct
-15
Nov-
15
Dec
-15
ResearchDesign, Analysis, Simulation
ManufacturingAssemblyTesting
Presentation & Final Report