Home Authors Posts by Barnaby Wainfan

Barnaby Wainfan

165 POSTS 0 COMMENTS
Barnaby Wainfan is a principal aerodynamics engineer for Northrop Grumman’s Advanced Design organization. A private pilot with single engine and glider ratings, Barnaby has been involved in the design of unconventional airplanes including canards, joined wings, flying wings and some too strange to fall into any known category.

Wind Tunnel

The diagnosis of pitch sensitivity problems boils down to one of two things: too little static margin or control system problems. This month we discuss how to modify the airplane to fix them;

Wind Tunnel

This month we use the accumulated flight-test data to determine what exactly is causing the unacceptable flying qualities of the airplane so that the best way to fix the problem can be identified;

Wind Tunnel

The perils of PIO;

Wind Tunnel

Its an age-old duality: stability versus maneuverability. Many factors go into developing and building any aircraft, and the designers choices will affect a pilots workload, for good or ill. Among the topics discussed are trim, pitch stability and yaw stability;

Wind Tunnel

The author discusses the theory and effect of constant-speed propellers on piston-engine airplane performance, and compares fixed-pitch versus constant-speed props, effect on thrust HP and propulsion, the comprises involved in choosing a prop, how props perform in various conditions and phases of flight, how variable-pitch props work, and why a constant-speed prop is the best choice for high-performance aircraft.

In Case You Missed it

Vroom!

Months of repair work netted Bill Repucci a new, more powerful engine for his RV-9. The increase in horsepower brings with it a shift in CG and handling characteristics.

Ziggy’s New Engine

Adding a 180-hp Titan engine to a Legend Cub.

Tidy Up with Adel Clamps

There is so much to learn by simply observing the handiwork of others. Some...

Safety Is No Accident: Buying a Previously Owned, Flying Homebuilt

Ron Wanttaja looks at the accident data to determine whether its safer to buy than build an Experimental, and he identifies the key factors to ensuring a successful outcome.