| 1. | It was apparent, that the blade angle needs to be adjustable.
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| 2. | Students apply math and science skills to everything from propeller blade angles to electrical systems.
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| 3. | In turn, the blade angles to reduce or increase the captured wind power through pitch control.
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| 4. | The secret to obtaining a sharp cutting edge is maintaining the correct blade angle during the sharpening.
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| 5. | One of the influential factors was the propeller design in relation to the most efficient blade angle.
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| 6. | The direct adjustment of blade angle was faded out automatically as the blade angle increased with increasing forward speed.
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| 7. | One significant development did occur during these times; the blade angle was lowered to 45 degrees from 50 degrees.
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| 8. | The direct adjustment of blade angle was faded out automatically as the blade angle increased with increasing forward speed.
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| 9. | Modern wind turbines have self-monitoring systems and adjust their direction and blade angle to maximize on the wind's natural power.
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| 10. | A constant-speed propeller was needed along with a device that would change the propeller blade angles according to varying flight conditions.
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