Chapter1_Notes

# Chapter1_Notes - MAE 4243 Aerospace Propulsion Power...

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MAE 4243 Aerospace Propulsion & Power Introduction Chapter 1

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Outline Syllabus Textbook Grades Course Topics Gas Turbine Engines & Other Gas Power Systems Classification Engine Requirements & Design as a Part of Aerospace Systems Design
Syllabus Instructor Rick Gaeta, 208 EN, [email protected] OH: open door policy or by appt. Background TAs (see syllabus for contact info) Cody Pinkerman Ben Bettenger Mike Novick (Tulsa) Lecture notes will be posted online (OC/D2L) and are intended both to emphasize topics and supplement the text; thus, there will not always be overlap (yes, you have to read the book!) - posting will usually be on the weekend prior to that week s lectures Best way to contact me

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Syllabus Text Elements of Propulsion, Gas Turbines & Rockets by Jack D. Mattingly, AIAA, 2006 Available on Knovel server (www.knovel.com) Course topics (see syllabus) Grades HW 3-4 Design Projects as part of HW grade (extended HW problems) 2 Exams 1 Final exam Final grades will be based on a curve with B-C line being the nominal average This class is hard; after all, it is rocket science!
Units Unfortunately, the US aircraft engine industry is as entrenched as the US aircraft industry and English/Imperial units are the norm (this is changing rapidly though as companies form global alliances) While we will commonly use SI units, we will often use English units to make sure we know what we re doing The text also uses SI and English alternating in HW & you should be comfortable converting between systems Common conversions Note that when using lbm instead of slug , you have to use the gravitational conversion, g c =32.174, included in eq ns in the text 1 lbf = 4.448 N 1 kg = 2.2 lbm = .0685 slugs 1 Btu = 778 lbf-ft = 1055 J 1 atm = 14.7 psi = 1.01•10 5 kPa 1 hp = 550 ft-lbf/s = 745.7 W = 2545 Btu/hr

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6 A Note About Tests and HW It is a well accepted fact that 86.3% of all problems dealing with research and engineering are the result of improper unit conversion .Check units first! We are not going to convert to the SI system in this country in the foreseeable future .Deal with it. When you obtain a result on a test or HW, always ask yourself "Does this make sense?" No partial credit will be given if a patently ridiculous answer is given with no acknowledgement of it's absurdness. The clearer and neater your answers are, the more likely I am to give you partial credit.
7 Form or Function? The Engineer as Artist

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8 GE 90 Fan Laws of Thermodynamics in the NY Metropolitan Museum of Art Engineering & The Arts
9 Rapid Progress ~ 1240 lb f ~ 128,000 lb f ~ 60 years of Engineering The invention was nothing. The achievement was making the thing work Sir Frank Whittle 100x Increase in Thrust

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10 Innovation
11 Robust Design Stall Margin? ..... We don t need no stinkin Stall Margin!

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12 Not the Kind of Afterburner We Want
13 Ruggedness

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14 "There hasn't been an original idea in aerospace technology that hasn't been thought of, designed, or built and tested before 1960" - Some wise old
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