18 Nov 5 - Propulsion

18 Nov 5 - Propulsion - AOE 2104-Aerospace and Ocean...

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AOE 2104--Aerospace and Ocean Engineering Fall 2009 Virginia Tech November 5 2009 Propulsion AOE 2104 Introduction to Aerospace Engineering Propulsion
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AOE 2104--Aerospace and Ocean Engineering Fall 2009 Virginia Tech November 5 2009 Propulsion Structures Quiz – Nov 12th Here are a few guidelines for your structures quiz: What equations do I need to know? Simple expressions such as MOS, stress, 1D strain will NOT be given Complex expressions, e.g. 3D Hooke’s law will be given if needed Know the following items Assumptions for beam bending and what things like neutral axis mean How to size a spar Considerations for material selection: definitions Information on alloys: numbering, content of 1xxx, 2xxx, 6xxx and 7xxx series Heat treatments and their meaning – I will send out a slide on this Benefits/Issues when using titanium, applications We will not cover cutouts, stringer shapes etc. but this will appear in the final
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AOE 2104--Aerospace and Ocean Engineering Fall 2009 Virginia Tech November 5 2009 Propulsion Aircraft/Spacecraft Propulsion We discussed how aircraft fly, and how that flight is controlled. We discussed how aircraft performance depends on the power/thrust characteristics of that aircraft. How do you chose your power plant? What is available out there? Propulsion will be the subject of AOE 4234 – Aerospace Propulsion Systems (Fall Senior Year) Chapter 9 in the Text book
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AOE 2104--Aerospace and Ocean Engineering Fall 2009 Virginia Tech November 5 2009 Propulsion Aircraft Propulsion - Roadmap
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AOE 2104--Aerospace and Ocean Engineering Fall 2009 Virginia Tech November 5 2009 Propulsion Aerospace Propulsion 1500 1600 1700 1800 1900 2000 Futur… Da Vinci AirScrew A long time ago (200 BC) Archimedes uses screws to lift water 1775: Bushnell’s Turtle uses screws 1945: First turboprops. 1939: First turbojet airplane (Heinkel 178) 2004: X43 Mach 9.6 1970s: First turbofan engines (B747) First Human Powered Controlled Flight
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AOE 2104--Aerospace and Ocean Engineering Fall 2009 Virginia Tech November 5 2009 Propulsion Aerospace Propulsion - Propellers Propellers have been around for quite some time… How does a propeller work exactly ? Basic mechanical concept: Input work to create thrust. Force transducer used is an airfoil that will create lift while rotated, thus pulling (or pushing) the aircraft forward.
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Fall 2009 Virginia Tech November 5 2009 Propulsion Burt Rutan’s Boomerang Aerospace Propulsion - Propellers Tractor Propeller Pusher Propeller USAF XP-54 Swoose Goose Popular Mechanics Safer in one engine failure scenario. Flies straight
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This note was uploaded on 04/04/2010 for the course ESM 2214 taught by Professor Lesko during the Spring '10 term at Virginia Tech.

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18 Nov 5 - Propulsion - AOE 2104-Aerospace and Ocean...

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