MAE155A_HW3A

MAE155A_HW3A - MAE 155A Aerospace Engineering Design I Winter 2010 Homework#3A(Aircraft Design DUE DATE Thursday 18 FEB 2010 Problem#1 Airplanes on

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
MAE 155A Aerospace Engineering Design I Winter 2010 Homework #3A (Aircraft Design) DUE DATE: Thursday, 18 FEB 2010 Problem #1 Airplanes on approach to San Diego (SAN) airport pass directly over parts of Balboa Park and the downtown area. Compute the SPL when an airplane passes directly overhead an unfortunate apartment dweller that lives 2 Km away from the SAN runway threshold. A jet engine operating at 100% thrust produces 100 dB SPL at 1,000 ft reference distance. Assume that the airplane throttles are set at 50% thrust on approach, and that the sound intensity is proportional to the square of engine thrust. (i.e. I/I max = (T/T max ) 2 ). Also assume that the airplane is on a 3-degree landing approach flight path. The atmospheric absorption coefficient is 1.2 dB per 1,000 ft. Problem #2 Use the refined sizing method (Lecture 4 and Raymer CH6) to design a "super-cruise" military fighter that satisfies the following requirements. a) takeoff ground-roll distance < 8,000 ft at sea level
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 08/02/2010 for the course MAE 155a taught by Professor Staff during the Fall '08 term at UCSD.

Page1 / 2

MAE155A_HW3A - MAE 155A Aerospace Engineering Design I Winter 2010 Homework#3A(Aircraft Design DUE DATE Thursday 18 FEB 2010 Problem#1 Airplanes on

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online