1. Dark mosquito shadows across the hilltops, rotor blades beating the air, stirring the ground, pressing down.

2. The disk formed by the rotor blades is what really flies.

3. A simple puff of air will send the rotor blade spinning and get the LED lights glowing.

4. When tail rotor blade designed into soft in rotary plane, there is a new dynamical problem of coupling stability between tail rotor and tail boom for helicopters with one main rotor and tail rotor.

5. Rotor blade vibration measurement kept the high - speed rotating blades stable in property.

6. A rotor blade of titanium alloy TC 11 in an aero - engine fractured at the segment during service.

7. A theory of aeroelastic stability of hingeless rotor blade in hover by using the Galerkin weighted residual finite element method is developed in this paper.

8. As a critical part of helicopter, rotor blade anti-fatigue design technique is one of the key to improving safety life and decreasing cost.

9. A new way to solve dynamical response of rotor blade in helicopter.

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10. The helicopter rotor blade deicing technique is greatly important to ensure the flight safe - ty.

11. Adding a rotor blade (it had five on the main rotor and four on the tail) and using a modified exhaust system were among them.

12. At the time of writing, however, the ideal design of the main rotor blade was still to be established.

13. The synthesised components of the molecule look and act like a rotor blade, propelling the molecule around.

14. I was always amazed that any electric motor could turn the engine, transmission, and those big rotor blades.

15. The helicopter warning horn then sounded advising that the main rotor blades were too slow.

16. The grenade went up through the roof of my Huey, up through the spinning rotor blades.

17. There was also talk that these daredevils flew with their rotor blades overlapped by several feet, just for fun.

18. Model helicopters can be obtained in two forms - those with variable pitch rotor blades and those with fixed pitch blades.

19. I have found it to be a great help if the main rotor blades are covered with a glossy white material.

20. If you held the collective in flying position, the rotor blades would slow and stop.

21. Aeroelastic model is developed to analyze aeroelastic stability of helicopter rotor blade with swept tips.

22. This NSMS ( noninterference stress - measurement system ) method is an alternative to the strain gauge rotor blade vibration.

23. Gravity center modification method can be used in high - load rotor blade design in engineering.

24. From the relative motion concept of rotor fixing and stator rotating, the experimental device (situation No. 3) for simulating the rotor blade tip clearance flow is designed.

25. It provides the foundation to supervise and diagnose the cracks of rotor blade.