Which helicopter has the maximum speed of 170 knots?

Which helicopter has the maximum speed of 170 knots?

• A. UH-60
• B. OH-58
• C. CH-47
• D. AH-64

Answer: (C)

The Chinook is built for speed as a heavy-lift twin-rotor aircraft, and its tandem rotor design plus strong engines push it to around 170 knots in level flight. That setup reduces rotor-related drag and torque effects, letting the helicopter reach higher forward speeds without sacrificing stability or payload capability. The Black Hawk and Apache, with single main rotors and tail rotors, are optimized for maneuverability and lift at lower drag, giving top speeds in the mid-150s knots. The Kiowa is lighter and not built for high-speed flight, topping out well below the others. So, among these helicopters, the Chinook achieves the highest maximum speed, near 170 knots.

The Chinook is built for speed as a heavy-lift twin-rotor aircraft, and its tandem rotor design plus strong engines push it to around 170 knots in level flight. That setup reduces rotor-related drag and torque effects, letting the helicopter reach higher forward speeds without sacrificing stability or payload capability. The Black Hawk and Apache, with single main rotors and tail rotors, are optimized for maneuverability and lift at lower drag, giving top speeds in the mid-150s knots. The Kiowa is lighter and not built for high-speed flight, topping out well below the others. So, among these helicopters, the Chinook achieves the highest maximum speed, near 170 knots.