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.

A Futuristic Anachronism

Ultimate experimenter Paul Lipps has used his own homebuilt, a Lancair 320, as a test bed for his many innovations, which include reflexed flaps, an ultra-long pitot tube for more accurate readings, a solar-powered fan for the cockpit, a cowl scoop for ultra cooling of the magneto, extremely close clearances between the spinner and the prop, and a one-of-a-kind propeller.

Engine Beat

Exhaust systems do more than just get air into and out of aircraft engines. Exhaust system design, in terms of exhaust pipe length, diameter and tuning, affect the efficiency and performance of the engine, for better or worse.

Light Stuff

The Sky Arrow 600: a different kind of LSA; by Dave Martin.

Kitfox Super Sport

With 4000 kits sold, a million hours flown and a loyal customer base, you just knew that the Kitfox would somehow find itself back in production. It's been out after the previous company, SkyStar Aircraft, went bankrupt in 2005, leaving builders in the lurch.

Metal Working 11-part Series

Now the exceedingly popular and extraordinarily useful 11-part Build YourSkills: Metal Series is available as a single PDF. This must-have additionto your library was written by RV-7 builder Dan Checkoway and carefullyillustrated for first-time metal-workers and old hands alike. Mosteverything you need to now, from material handling and cutting to deburring,drilling and riveting is in this series.

Two Weeks to Taxi

Welcome to the first of what we expect to be many web-based updates on KITPLANES big project for the year, the construction of a...

Build Your Skills: Metal, Part 2

How to meld with metal and bash rivets without blood or tears; by Dan Checkoway.

Calculating Weight and Balance

Tackling weight-and-balance calculations is a task we have all faced with some trepidation, but it is so vital, so important, so fundamental to flight...

Build Your Skills: Metal, Part 1

An RV builder begins our journey through the gritty details of working with metal.

In Case You Missed it

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;

All About Avionics: Cutting The Metal

Heres something to ponder: By the time you get to the point where you are ready to build the panel in your homebuilt aircraft, you've already mastered many of the skills and techniques you'll need to do it by virtue of completing the airframe. That statement is all the more credible when it comes from someone with a vested interest in the subject, our own avionics expert Stein Bruch.

Firewall Forward: Exhaust Systems

Besides venting engine exhaust, an exhaust system must heat the cabin and warm the carb. Some crucial rules must be heeded, no matter what kind of system you choose.

What’s Your Angle?

Angle of attack indicators make better pilots and might save your life.