home *** CD-ROM | disk | FTP | other *** search
/ The Way Things Work: Pinball Science / Pinball Science.iso / pc / journal / technote / ha / hatn006s.dib (.png) < prev   
Bitmap Image  |  1998-04-03  |  148.3 KB  |  222x707  |  8-bit (45 colors)
   ocr: How do people steer balloons? There' S litde you can do to steer a normal balloon, as it is pushed along by the wind and currents of warm air, called thermals. RUDDER aapnod -E PROPELLER, ELEVATOR You can steer a balloon only if you give it a propeller and controls such as an elevator and a rudder. A balloon with controls like this is called an "airship. - Airships are usually shaped like a football - a form that gives the least drag (or wind resistance) when moving forward. Although you can'ts steer a normal hot-air balloon in the same way, you can control how high it goes. If you lighten the ...