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Beginner's Guide to Propulsion

Turbine Engine Parts - Inlets--Worksheet

Complete the following problems:

  1. A Boeing 747 aircraft has a PW4000 engine with a 94 inch inlet diameter. Find the radius, circumference, and area of this inlet.

  2. A DC-10 has a JT9D engine with a 46.7 inch inlet radius. Find the diameter, circumference, and area of this inlet.

  3. A Boeing MD-90 has a circular inlet with a circumference of 199.39 inches. What is the radius of the inlet?

  4. The Airbus 318 has a Pratt & Whitney 6000 engine with a cross-sectional circular inlet area of 2508.5774 square inches. What is the circumference of this inlet?

  5. A commercial Boeing 777 has a large circular inlet with a 112 inch diameter. How much larger is the area of this inlet than the inlet on the Boeing 747?    (Hint: refer to problem 1)

  6. The F-16 military plane has a smaller circular inlet with a 34.8 inch diameter. Calculate the radius, circumference and area of this inlet.

  7. The Boeing C-17, a military transport aircraft has a circular inlet with a circumference of 246.49 inches. Find the diameter and area of this inlet.

  8. The F18E Super Hornet has a turbine engine with a rectangular inlet. It has dimensions of 2'4" by 3'6." Find the area of a cross section of this inlet in both square inches and square feet.

  9. Suppose there was a F19E Super Wasp with a rectangular inlet area of 13.5 square feet. If the length is 4'6," what is the width?

  10. Write a few sentences summarizing and explaining what you learned from this activity.