Barnaby Wainfan
Barnaby is a Technical Fellow 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.
Fixed Pitch vs. Constant Speed
Deciding to use a fixed-pitch propeller or step up to the higher weight, cost, and complexity of a constant-speed prop in order to improve performance.
Fixed-pitch Props
A major advantage of a fixed-pitch prop is that it is lighter, simpler and cheaper than one with variable pitch.
A Bit About Blades
Like a wing, a propeller blade is characterized by its area, planform, and airfoil cross section.
Blade Inflow Angle
As the propeller moves through the air, each point on the blade follows a helical path.
Prop Momentum Theory
Proper selection and design of the propeller is one of the keys to airplane performance.
Wind Tunnel
Last month we took a look at using hinge-line offset to aerodynamically balance control surfaces. Offset hinge balances are effective, but they were not...
In Case You Missed It
Ask the DAR
DAR Mel Asberry continues his discussion of operating limitations and Phase I flight-test requirements.
Turbine Moose: The Ultimate Amphib
Its said that sailors make good floatplane pilots because they understand the nature of wind on the water. Sailboat racer and pilot Rick Orchard took that sentiment to heart in a big way when he decided to pump up an already large homebuilt (the Murphy Moose) by adding Aerocet amphibious floats and a 550-horsepower Pratt & Whitney PT6A-20 turbine engine.
The Dawn Patrol
When you're the newbie of the group, you're going to get the tough assignments. But some newbies know how to exact payback (all in good fun, of course).
