Homework 6 - Unied Engineering Fluids Problems F17F19...

Info icon This preview shows pages 1–3. Sign up to view the full content.

Unified Engineering Spring 2004 Fluids Problems F17–F19 F17+F18. The airfoil shown is operating at M = 1 . 6. Sketch the flow pattern. a) Determine the pressure p a on the front upper facet. Also obtain the surface Mach number M a for part b). b) Determine the pressure on the rear upper facet. c) Using the surface pressures, determine the L , D , and corresponding c and c d . (Note: ρ V 2 = γ pM 2 ). c p , 10 10 M a b F19. The pressure-tank reservoir for a paint sprayer contains air at 50 psi (3 . 45 × 10 5 Pa), and T = 300 K . Air is to be supplied to the spray gun at a rate of 10 grams / s. What is the absolute minimum diameter of the air hose that’s required to supply this air?
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

Problem M19 For wing spars bending loads are the major design driver. For engine disks the power density (and hence thrust) scales with the blade tip speed (V) squared. The centrifugal stress in a spinning disk is proportional to the density of the material used ( r ) and the tip speed squared, and to a good approximation this is given by: s ª 3 r V 2 . Thus engines are designed to
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.
  • Fall '08
  • STREKOWSKI
  • Tensile strength, Fracture mechanics, fatigue crack growth, engine disks

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern