# Air enters a duct with a mass flow rate of (35 mathrm{lbm} / mathrm{sec}) at (T_{1}=520^{circ} mathrm{R})

## Question:

Air enters a duct with a mass flow rate of \(35 \mathrm{lbm} / \mathrm{sec}\) at \(T_{1}=520^{\circ} \mathrm{R}\) and \(p_{1}=20 \mathrm{psia}\). The duct is square and has an area of \(0.64 \mathrm{ft}^{2}\). The outlet Mach number is unity.

**(a)** Compute the temperature and pressure at the outlet.

**(b)** Find the length of the duct if it is made of steel.

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**Related Book For**

## Fundamentals Of Gas Dynamics

**ISBN:** 9781119481690

3rd Edition

**Authors:** Robert D Zucker, Oscar Biblarz