SWRFI '03: A Wingtip Is a Wingtip Is a Wingtip, Right? | Aero-News Network
Aero-News Network
RSS icon RSS feed
podcast icon MP3 podcast
Subscribe Aero-News e-mail Newsletter Subscribe

Airborne Unlimited -- Recent Daily Episodes

Episode Date

AMA Drone Report

Airborne-Monday

Airborne-Tuesday

Airborne-Wednesday

Airborne-Thursday

Airborne-Friday

Airborne On ANN

ADR 01.23.17

Airborne 01.23.17

Airborne 01.24.17

Airborne 01.18.17

Airborne 01.19.17

Airborne 01.20.17

Airborne Hi-Def On YouTube

ADR 01.23.17

Airborne 01.23.17

Airborne 01.24.17

Airborne 01.18.17

Airborne 01.19.17

Airborne 01.20.17

Thu, May 22, 2003

SWRFI '03: A Wingtip Is a Wingtip Is a Wingtip, Right?

Not When It Is A Vorten Tip!

By ANN Correspondent Juan Jimenez

One of the things we like about the regional fly-ins is that there is always some cool product that doesn't make it to the larger shows. The SWRFI show was no exception, and this time we got a look at the Vorten Tip.

The Vorten Tip is a patented wingtip vortex attenuating device developed from a concept tested in the Purdue University wind tunnel. It was designed by Ed Johnstone of Johnstone Aero out of San Antonio, TX. We all know that a lifting surface always has an associated induced drag which produces a vortex that trails behind it. Student pilots are taught about wingtip vortices, and those of us who fly in and out of airports servicing larger aircraft hear about them from ATC all the time.

The Vorten Tip takes air into an inlet located at the highest pressure point  on the airfoil, forces that high energy air through an aerodynamically designed plenum chamber and extrudes it through a reduced-area opening at the trailing edge. If you are familiar with the design of the P-51 Mustang cooling air scoop, you know what happens at the exit point - the air leaves at a much higher velocity than when it came in. With the Vorten Tip, this effect modifies the "helix angle" associated with the vortex by stretching it out. This has the effect of reducing induced drag, which is of course "a good thing."

So what does this all mean? The way Mr. Johnstone explains it, the Vorten Tip, which can be adapted to just about any "Hershey Bar" style wing, improves climb and short field performance. It also improves cruise speed at higher altitudes. Flight testing has been performed so far on a modified Piper Cherokee PA28-140. The testing has documented a 100 FT/MIN increase in rate of climb. Continued testing is being performed in order to optimize the inlet and outlet configurations.

An application for an STC has already been filed with the FAA to install the Vorten Tip on Piper Cherokees, and STC's for other aircraft are planned once the first one is completed.

FMI: Ed Johnstone, (210) 496-3847, ehjjaco@aol.com

Advertisement

More News

Airborne 01.23.17: PMA Approval Breakthrough, PBoR in Legal Ruling, R44 Cadet

Also: DJI Phantom 4, SpaceX Launch Vid, BasicMed AC, Rolls-Royce, Next F-35A Base, UAV Perched Ldg, K-MAX A proposed new compliance pathway for Parts Manufacturer Approval for manu>[...]

AMA Drone Report 01.23.17: AMA Expo West, Propel Star Wars Drones, Lily Folds

Also: Ready Made RC FPV Fest, ERAU Offering Drone Course, Second Drone Advisory Committee Meeting AMA Expo West was quite a transition for the ANN crew... who went from the insanit>[...]

Airborne 01.23.17: PMA Approval Breakthrough, PBoR in Legal Ruling, R44 Cadet

Also: DJI Phantom 4, SpaceX Launch Vid, BasicMed AC, Rolls-Royce, Next F-35A Base, UAV Perched Ldg, K-MAX A proposed new compliance pathway for Parts Manufacturer Approval for manu>[...]

Air Force COS Goldfein Addresses Priorities For The 21st Century

Outlines His Perspective For The Future Of American Air Power Air Force Chief of Staff Gen. David L. Goldfein outlined his perspective on the future of American airpower and how Ai>[...]

AeroSports Update: FAI World Glider Championship Results

The 34th FAI World Gliding Championships In Australia Ends On A High A hard two-week battle in Australian skies sees three new FAI Gliding World Champions win gold. Three new FAI G>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2017 Web Development & Design by Pauli Systems, LC