Q: A typical World War I biplane fighter (such as the French
A typical World War I biplane fighter (such as the French SPAD shown in Figure 3.50) has a number of vertical interwing struts and diagonal bracing wires. Assume for a given airplane that the total le...
See AnswerQ: Consider two different flows over geometrically similar airfoil shapes, one airfoil
Consider two different flows over geometrically similar airfoil shapes, one airfoil being twice the size of the other. The flow over the smaller airfoil has freestream properties given by T∞ =200 K, ρ...
See AnswerQ: Consider a venturi with a throat-to-inlet area ratio
Consider a venturi with a throat-to-inlet area ratio of 0.8, mounted on the side of an airplane fuselage. The airplane is in flight at standard sea level. If the static pressure at the throat is 2100...
See AnswerQ: The Kutta-Joukowski theorem, Equation (3.140),
The Kutta-Joukowski theorem, Equation (3.140), was derived exactly for the case of the lifting cylinder. In Section 3.16 it is stated without proof that Equation (3.140) also applies in general to a t...
See AnswerQ: Consider the streamlines over a circular cylinder as sketched at the right
Consider the streamlines over a circular cylinder as sketched at the right of Figure 3.26. Single out the first three streamlines flowing over the top of the cylinder. Designate each streamline by its...
See AnswerQ: Consider the flow field over a circular cylinder mounted perpendicular to the
Consider the flow field over a circular cylinder mounted perpendicular to the flow in the test section of a low-speed subsonic wind tunnel. At standard sea level conditions, if the flow velocity at so...
See AnswerQ: Prove that the flow field specified in Example 2.1 is
Prove that the flow field specified in Example 2.1 is not incompressible; i.e., it is a compressible flow as stated without proof in Example 2.1.
See AnswerQ: Consider a venturi with a small hole drilled in the side of
Consider a venturi with a small hole drilled in the side of the throat. This hole is connected via a tube to a closed reservoir. The purpose of the venturi is to create a vacuum in the reservoir when...
See AnswerQ: Consider a low-speed open-circuit subsonic wind tunnel with
Consider a low-speed open-circuit subsonic wind tunnel with an inlet-to-throat area ratio of 12. The tunnel is turned on, and the pressure difference between the inlet (the settling chamber) and the t...
See AnswerQ: Assume that a Pitot tube is inserted into the test-section
Assume that a Pitot tube is inserted into the test-section flow of the wind tunnel in Problem 3.4. The tunnel test section is completely sealed from the outside ambient pressure. Calculate the pressur...
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