10.07.2015 Views

Gears, Chains, and Sprockets - VEX Robotics

Gears, Chains, and Sprockets - VEX Robotics

Gears, Chains, and Sprockets - VEX Robotics

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

Engineering1. If you were designing the winch system for a Coast Guard search <strong>and</strong> rescue helicopter, howwould you adjust the mechanism’s speed <strong>and</strong> torque with gear ratios to maximize the efficiency<strong>and</strong> utility of the system?2. How would you test the system to reach your goal of maximum efficiency?MathSuppose a rescue helicopter is lifting a swimmer out of the water. The total load at the end of the cableis 210 lbs. The winch works by turning an axle, about which the cable becomes spooled.1. What is the torque when the spool has a radius of 3 inches?2. As more cable is drawn in <strong>and</strong> the spool grows, the radius becomes 5 inches. What is thenew torque?60■Unit 6: <strong>Gears</strong>, <strong>Chains</strong>, <strong>and</strong> <strong>Sprockets</strong>

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!