Sling Shot

Description: A catapult-launched, indoor glider

Designed by Bob Aberle for indoor competition, this catapult-launch glider is made of balsa sheet with built-up stick wings.
Additional Information:

• Type: indoor RC catapult-launched glider for NIRAC competition
  
• Wingspan: 30 in.
  
• Wing area: 139 sq. in.
  
• Weight: 3.8 oz.
  
• Wing loading: 3.9 oz./sq. ft.
  
• Length: 31 in.
  
• Battery: single FMA Kokam 145mAh Li-poly
  
• Radio system used: Hitec RCD Eclipse FM transmitter w/Spectra RF module, FMA Direct M5LV receiver, two FMA PS-20LV sub-micro- servos and an E-Cubed RC short antenna
  
• Flight duration: less than 2 minutes in an 80-to 90-foot-high indoor facility
  
• Launch system: homemade high-start made of 25 feet of 1/8-inch flat rubber and 60 feet of 30-pound-test, nylon-monofilament fishing line.