Once upon a time, RC planes were expensive models that took months to build and big money to equip with electronics. Since the 20th century though, powerful batteries have become cheap ...

For [Daniel Riley] AKA [rctestflight] that project is a solar powered RC plane which to date spans ... and uses a simple foam board flying wing with a stepped KF airfoil instead.

Flaming Geyser State Park has become a no-fly zone for a three-decade-old RC plane club ... and all the planes’ bodies of the planes are foam. They can have up to 40-inch wingspans and weigh ...