Wind Tunnel
When unexpected drag is an issue, the cause could be gaps in the skin of your airplane. A simple seal might solve the problem.
Wind Tunnel
One effect of a rotating propellor: It acts as a gyroscope. What does this mean for the pilot?
Wind Tunnel
Thrust-line adjustment is a powerful tool for tailoring flying qualities, but it’s complicated.
Wind Tunnel
Once designers had addressed every other drag-producing aspect of the biplane, they decided to get rid of the struts and wires bracing the wings—and the switch to the monoplane was made.
Wind Tunnel
Today, monoplanes dominate, but biplanes came first. They had their advantages—and for some of today’s missions, they still do.
Wind Tunnel
Nine simple rules, distilled from years of experience (making—and fixing—assorted mistakes), can help any aircraft designer avoid disaster.
Wind Tunnel
It’s all about lift, and knowing your airplane’s lift margin at a given airspeed tells you what the airplane is capable of.
Wind Tunnel
Contrary to popular belief, the frontal area of an airplane is not the most important determinant of drag.
In Case You Missed It
![Maintenance technician William Vergonet conducts an inspection on a Cub. [Credit: Lisa Turner]](https://www.kitplanes.com/wp-content/uploads/2026/09/IMG_3535.jpg?w=324&h=160&crop=1 "Post-Flight Maintenance Debrief")
Post-Flight Maintenance Debrief
Meg Godlewski gave us a great set of reminders in FLYING Magazine — "The...
(Almost) Wordless Workshop
Project steps rarely go in order. These illustrated tips might save you time—and frustration—when things don’t go as planned.
Rapid Prototyping and Experimental Design
Sandwich panels, part 5-a simple, accurate method for molding flanged parts.
Ask the DAR
Converting an ultralight to ELSA, kit without a bill of sale, engine missing its data plate.