5-21 - (x-C.OI11.pl)eJliJj Eq.S./~ & upAv-...

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~ ..;".21 5.21 (~ Auids in dIe News a11icle titled "Wb~ Ute plume 1-:' Section 5.2.2.) Air flows into dIe jet engine shown in Fig. P5.21 at a rate of 9 slugs/s and a speed of 300 ft/s. Upon landing, the engine exhaust exits through tOO reverse thrust mechanism with a speed of 900 ft/s in the direction indicated. Detennine the reverse thrust applied by the engine to the airpl~. Asswne 100 in- let and exit pressures are atmospheric and that the mass fIowrate of fool is negligible compared to 100 air fIowmte through the engine. ~ 3I~ VI The mol11cl/f{)O/ erv(1-/iIJn
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