Homework 5

# Homework 5 - Unied Engineering Fluids Problems F15F16...

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

Unified Engineering Spring 2004 Fluids Problems F15–F16 F15. Our analysis for determining the speed of sound assumed that the sound wave had infinitesimal strength. But for the 120 dB sound waves produced by Linkin Park near the stage, this assumption may be suspect. a) One suitable definition of sound dB level is: p dB = 20 log 10 20 × 10 6 Pa where p is a pressure variation caused by an average passing sound wave. Treating this sound wave as a shock wave, determine its propagation Mach number into still air. Hint: Put the propagating-shock situation into the shock’s frame of reference. b) Determine the temperature fluctuations associated with the passing waves. Would you say Linkin Park makes strong or wimpy shock waves? F16. a) Anderson p. 502, Problem 15. b) For Problem 15, also calculate the stagnation pressure at the very tip of the SR-71 nose sting.

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

View Full Document
Unified Engineering Spring 2004 Problem M14 A circular cross-section aluminum tube is simply supported at its ends and is loaded eccentrically as shown. The external diameter of the tube is 50 mm, the wall thickness is 5 mm. The Young’s modulus is 70 GPa, The allowable normal stress is 85 MPa. The length of the tube is 2.5 m.
This is the end of the preview. Sign up to access the rest of the document.
• Fall '08
• STREKOWSKI
• Tensile strength, yield strength, sound wave, lower yield strength, damage tolerance requirements, yield strength metal

{[ snackBarMessage ]}

### What students are saying

• 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.

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

• 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.

Dana University of Pennsylvania ‘17, Course Hero Intern

• 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.

Jill Tulane University ‘16, Course Hero Intern