![[Credit: Lisa Credit]](https://www.kitplanes.com/wp-content/uploads/2026/10/Experimental.jpg?w=265&h=198&crop=1 "Have You Seen Your Oplims?")
![[Credit: Andrew Robinson]](https://www.kitplanes.com/wp-content/uploads/2026/10/737_VGs2.jpg?w=265&h=198&crop=1 "Vortex Generators")
![[Credit: Van's Aircraft]](https://www.kitplanes.com/wp-content/uploads/2026/10/Vans_RV14A.jpg?w=265&h=198&crop=1 "Something New On The Horizon")
![[Credit: Lisa Turner]](https://www.kitplanes.com/wp-content/uploads/2026/10/Chute-Topaz-Gigapixel-2x-scale.jpg?w=265&h=198&crop=1 "Should You Consider A Whole Aircraft Parachute?"){kind=tracking}
Safety Is No Accident: Glasair and GlaStar
Ron Wanttaja examines the accident data for the Glasair and GlaStar designs and finds structural support may play a key role.
Buzzwords
Ground effect, or changes in airflow when flying a wingspan distance above the ground, affects longitudinal stability, elevator effectiveness and possibly even your airspeed indicator. By Ed Kolano.
Letters
Watch the Shelf Life In your Ask the DAR feature in the November 2010 issue, Mel Asberry replies to a questioner that the...
Down to Earth
Two German globetrotters are flying their Vans RV-7 around the world to promote aviation. By Amy Laboda.
The Dawn Patrol
Dick Starks envisions the perfect vehicle for transporting messengers in the throes of trench warfare-and then he builds one.
Aero ‘lectrics
Jim Weir describes some close encounters with power regulators of the plastic and metal-can kind.
Wind Tunnel
Don your thinking caps, kids. Its time to learn about the value of nondimensionalized aerodynamic data.
In Case You Missed It
Weighty Matters
We’ve all been taught the five primary forces of flight—lift, thrust, gravity and drag....
Under New Management
An inside look at EFII's all-new electronic engine control system for Experimental Lycomings.