Will rate lifesaver to whoever can explain best indetail how to solve the proble

Question

Will rate lifesaver to whoever can explain best indetail how to solve the problem. Thank you! The diameters of the main rotor and tail rotor of asingle-engine helicopter are 7.62 mand 1.02 m, respectively. Therespective rotational speeds are 454rev/min and 4137 rev/min. Calculatethe speeds of the tips of both rotors. main rotor 1 m/s tail rotor 2 m/s Compare these speeds with the speed of sound, 343 m/s. vmain rotor /vsound 3 vtail rotor /vsound 4 Will rate lifesaver to whoever can explain best indetail how to solve the problem. Thank you! The diameters of the main rotor and tail rotor of asingle-engine helicopter are 7.62 mand 1.02 m, respectively. Therespective rotational speeds are 454rev/min and 4137 rev/min. Calculatethe speeds of the tips of both rotors. main rotor 1 m/s tail rotor 2 m/s Compare these speeds with the speed of sound, 343 m/s. vmain rotor /vsound 3 vtail rotor /vsound 4 main rotor 1 m/s tail rotor 2 m/s

Explanation / Answer

(a) main rotor    speed = 0.5d = 0.5 * 454 * (6.2832/60) * 7.62 =   181.2m/s .     tailrotor         speed = 0.5 d = 0.5 * 137 * (6.2832/60) * 1.02 =   221.0m/s . (b)       181.2 /343 =    0.528 .             221.0/ 343 =    0.644

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.