1 / 16

Pima Community College 4/12/14

Multi-Engine Helicopter Flight Dynamics And Modeling: An Introduction NASA Space Grant Undergraduate Research Symposium. Team Members. Pima Community College 4/12/14. Nick Patzke Gustavo Guerreo Nick Morris. Overview. Mission and Motivation What is a Quadcopter?

kata
Download Presentation

Pima Community College 4/12/14

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Multi-Engine Helicopter Flight Dynamics And Modeling: An IntroductionNASA Space Grant Undergraduate Research Symposium Team Members • Pima Community College • 4/12/14 • Nick Patzke • Gustavo Guerreo • Nick Morris

  2. Overview • Mission and Motivation • What is a Quadcopter? • Quadcopter Flight Dynamics • Principles of Flight • Variables of Flight • Modeling Quadcopter Flight • Why Models Are Important • Conclusions • Summary • Questions • I ask that you please hold all questions until the end

  3. Our Mission and Motivation • Apply physics and engineering concepts to optimize flight performance and model the flight of a quadcopter. • Design and manufacture a UAV capable of: • Spanning sections of the Grand Canyon • Capturing Still Photos and HD Video • Expanding onboard sensors • Test the feasibility of UAV systems for: • Remote or inaccessible location monitoring • Topographical style mapping

  4. What is a Quadcopter? • A Quadcopter is a type of aircraft that derives lift and propulsion from four sets of horizontally revolving rotors. (Google.com, revised definition)

  5. Helicopter vs. Quadcopter • How quadcopters fly compared to their single rotor counterpart • Anti-torque • The advantages of quadcopters

  6. Principles of Flight • We rely on a solid foundation of the following to allow us to understand the flight of these machines: • - Newtonian Mechanics • - Bernoulli’ Principle • - Fluid Dynamics Isaac Newton (www.news.discovery.com) Daniel Bernoulli (www.energyvanguard.com)

  7. Micro Quadcopter Giant Quadcopter H20 Quadcopter Mountain Quadcopter

  8. Variables That Define Flight Dynamics • Variables: • Elevation of quad-copter (ft.) • Temperature (T) • Air Density (ρ) • Humidity level • Angle of Attack (axis of quad-copter) (Φ) • Speed (v) • Wind vector • Fixed Parameters (per motor) • Lift coefficient (CL) • Drag coefficient (CD) • Angle of Attack (of propeller blades) (Ɵ) • Surface Area (s)

  9. Matrix A1 A2 A3 A4 A5 B1 B2 B3 B4 B5 C1 C2 C3 C4 C5 D1 D2 D3 D4 D5 ? CL CD ƟAoA SA

  10. Basic Steps of Modeling • Step 1: Identify the system to be modeled • Modeling is used to ensure the safety of an operation. It aims to reduce the level of risk by predicting future courses of events. • Step 2: Define all the variables that effect the model • Shown on previous slide • Step 3: Define the boundaries of the model • Step 4: Construct Model • Either base a model off of fundamental theory, then collect data and correct as necessary OR collect as much data as possible and piece together a model based on the data gathered. • Step 5: Test the Model

  11. Step 3: Define the Boundaries Modeling as a Function of Altitude: - There are three levels to look at in which the model of our aircraft drastically changes. • High Altitude (Above) • First stabilization point (Right) • Ground hover (Below) • Which would I choose? Why?

  12. Air Circulation Across a Rotor: Here we can see the difference in the air circulation when a helicopter is in ground effect (right) and out of ground effect (left). Notice the tips of the propellers.

  13. Air Circulation Across a Rotor:

  14. Bibliography • 8. Snow - microdrones GmbH - www.uasvision.com • 9. Water - Jeffrey Hartog - www.makezine.com • 10. Desert - Blade 350 QX Quadcopter - www.coolhunting.com • 12. Quadcopter Sketch - roman01la - www.youtube.com • 13. Helicopter air circulation patterns - www.faasafety.gov • 14. Diagram - FabQuad - www.aeroquad.com • 15. Helicopter Sketch - Jimi Brown - www.coroflot.com • 16. Isaac Newton - www.news.discovery.com • 17. Daniel Bernoulli - www.energyvanguard.com • 18. Lift Formula - www.ppl-flight-training.com Principles of Helicopter Flight, Second Edition, W.J. Wagtendonk GOOGLE Search Engine Pictures: • 1. Big Quadcopter - Naza M. - www.coptercraft.com • 2. Small Quadcopter - Nathan Hurst - www.wired.com • 5. Video Quadcopter - Steve Lodefink - www.flickr.com • 6. Wood - 3D Printed Vampire Quadcopter - www.3ders.org • 7. Grass - XAIRCRAFT X650 QUADCOPTER - www.infmetry.com

  15. Acknowledgements • A HUGE thanks to the following for offering this opportunity!: • Jack Crabtree and ANSR • Susan Brew, University of Arizona • Arizona NASA Space Grant • Prof. Mike Sampogna • Dr. Denise Meeks

  16. The hard part is yet to come as we prepare the quadcopter for flight and start collecting data as we work towards a model. QUESTIONS?

More Related