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HP-24

...a glider to fly a particular profile. What is more important are the planform, convenience, and features like autoconnects—and these are covered well by the HP-24.” Christner has a particular...

Wind Tunnel

...pitch of the blades, it can’t adjust the blade twist or planform. Why Constant Speed? Looking at Figure 1, we can see the primary reason to choose a constant-speed prop....

Alternative Energies

...battery assembly fits neatly right behind the pilot. Booker’s Red Tail Hawk has wings based on Monnett Moni spars and a planform with a long, rectangular center section and tapered...

Sensenich Goes Composite, Introduces New Ground-Adjustable Prop

...internal-pressure-molded system. According to the company, this production process yields a durable, low-inertia propeller. The propeller is designed with a swept-blade planform for maximum efficiency. The EZ-pitch hub features a...

Tail Surfaces and Aerodynamic Effects

...arm. Tail Design Considerations The airplane designer must choose the right combination of tail arm, tail area and tail planform to provide the desired characteristics. The most fundamental trade-off is...

Wind Tunnel

...friend asked me to design a wing for a single-seat homebuilt he had under construction. I did so, specifying planform, twist, and recommending an airfoil which gave a good combination...

Wind Tunnel

...planform, aspect ratio, and airfoil must be chosen so that the tail stalls at a higher airplane angle of attack than the wing. Although the design of a horizontal tail...

Letters

...force due to a small difference of the blades in pitch, planform or both. If a two-blade propeller is mounted to a 6-inch flange with as little as 0.01-inch (ten-thousandths...

SubSonex

...the same airframe parts. The geometry is closely related to a scaled Waiex. Jeremy: In its simple planform, JSX-2 is identical to JSX-1 except for the wider cockpit, which has...

Orso dItalia

...build, practical to maintain and flyable with no nasty habits will put the basic strutted high-wing planform on the short list. Whether it’s a tandem or side-by-side may be a...

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Around the Patch

Editor-in-Chief Marc Cook looks closely the TSAs proposed badging plan for GA aircraft, which was buried in the Large Aircraft Security Program (LASP). Also, is there a chance for a Superior Air Parts revival?

The Dawn Patrol

The Dawn Patrol gets to know more about General John J. Pershing when they display their WW-I replica aircraft at the annual Pershing Days Festival in Missouri.

2019 Homebuilt Aircraft Directory

So many airplanes, so little time: over 1000 aircraft to choose from. Also learn how 10 of our regular contributors chose their own experimental aircraft. Introduction Directory compiled by Omar Filipovic.

Hamming It Up

Amateur radio enthusiast Chuck Deiterich explains how pilots can use the Automatic Packet Reporting System (APRS) to track their flights and stay in touch with loved ones for a modest investment.