Carter Slowed-Rotor VTOL Demonstrates Impressive Lift-To-Drag Values | 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

Monday

Tuesday

Wednesday

Thursday

Friday

Airborne On ANN

Oshkosh Day One

Oshkosh Day Two

Airborne 07.20.16

Airborne 07.21.16

Airborne 07.22.16

Airborne Hi-Def On YouTube

Oshkosh Day One

Oshkosh Day Two

Airborne 07.20.16

Airborne 07.21.16

Airborne 07.22.16

Tweet Us The Coolest Things You See @OSH16!
#OSH16Coolest!

It's Alive!: AirVenture 2016 Innovation Preview on Vimeo!

It's Alive!: AirVenture 2016 Innovation Preview on YouTube!

 

Fri, Dec 21, 2012

Carter Slowed-Rotor VTOL Demonstrates Impressive Lift-To-Drag Values

Four-Place VTOL POC Aircraft Continuing Test Flights

Carter Aviation Technologies ... working in conjunction with Carter Aerospace Development ... says it has made significant progress as performance flight-testing of its current Slowed-Rotor/Compound (SR/C) prototype, the Proof of Concept demonstrator (the “POC”), continues. The POC is a variant of the company’s four passenger vertical takeoff and landing (VTOL) aircraft, known as the 4-Place PAV.

According to the company, the POC is continuing to expand the high speed/slowed rotor envelope. During performance flight-testing in November, the aircraft flew with the rotor slowed to 106 rpm. The company says that by significantly slowing the rotor rpm to less than half that of a comparably-sized helicopter, the aircraft demonstrated a lift-to-drag (“L/D”) value of 12 – around two-and-a-half times better than the most efficient helicopters.

L/D is a measure of the efficiency of an aircraft (lift or weight divided by drag or thrust). Higher L/D ratios are directly related to enhanced speed, fuel economy, climb performance, and glide ratio.
 
The flight also resulted in an advance ratio of 0.85. The advance ratio is calculated by dividing the forward airspeed of the aircraft by the tip speed of the rotor. As the rotor rpm (i.e., the tip speed) is reduced, the advance ratio increases. As the advance ratio increases, drag on the rotor decreases dramatically, resulting in increased efficiency.
 
Carter Aviation Technologies says that these key achievements clear the way for the POC to achieve speeds in excess of 200 knots at 25,000 feet and 350 HP with the current test weight of 3,950 lbs. Additionally, the POC has proven its VTOL capability, achieved speeds in excess of 140 knots on 200 HP and an altitude of 12,000 feet.
 
The company will continue to expand the high speed/slowed rotor envelope at ever-increasing altitudes, and will gather more data on flight efficiencies under those conditions.

(Photo provided by Carter Aviation Technologies)

FMI: www.cartercopters.com/

Advertisement

More News

L-3 Aviation Products Presents OSH2016 Special Event Coverage!!!

Innovative Avionics Powerhouse Showcases Latest Developments It's been a great year for L-3 Aviation Products. In less than six months, they've finetuned some ground-breaking produ>[...]

Aspen Avionics, True Innovators, Present OSH2016 Special Event Coverage!

OSH2016 Sponsor: Always-Innovative Aspen Avionics Based in Albuquerque, New Mexico, Aspen Avionics specializes in bringing the most advanced display and sensor technology from the >[...]

Martin Mars Makes Debut At AirVenture Oshkosh 2016

>[...]

Airborne 07.22.16: ONE Aviation New Jet, Drone Pilot Nabbed, Stemme Twin Voyager

Also: AEA Giveaway, 44 Trips To OSH, Airbus Drones, Future Pilots, NTSB Training, Air BP, Boeing Forecast, ALPA Milestone ONE Aviation has provided ANN with the initial outline for>[...]

It's ALIVE! 2016 AirVenture Innovation Preview Program Debuting RIGHT NOW!

Get The EARLY Inside Details On THE Most Exciting NEW Innovations And Product Announcements From OSHKOSH... The staff of EAA and the Aero-News Network are pleased to announce that >[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2016 Web Development & Design by Pauli Systems, LC