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

Airborne 08.22.16

Airborne 08.23.16

Airborne 08.24.16

Airborne 08.25.16

Airborne 08.26.16

Airborne Hi-Def On YouTube

Airborne 08.22.16

Airborne 08.23.16

Airborne 08.24.16

Airborne 08.25.16

Airborne 08.26.16

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

Airborne 08.26.16: Citation Longitude Update, Falcon 9 Display, N Shore Heli Rte

Also: Aerosim Scholarship, Santa Monica Nonsense, Marine One, UAV Developer Kit, FAA Penalty, F-35 Weapons Test, Coastal Helicopters The Cessna Citation Longitude moves closer to i>[...]

Airborne 08.25.16: Airlander 10 Accident, M500 EASA Cert, Flying Car Frenzy

Also: Veterans Against Airshows, Redbird Migration 2016, Rocket Debris, Charles Taylor Award, Wayward Satellite, Norfolk International, Hawaiian Airlines It was only last week that>[...]

Airborne 08.26.16: Citation Longitude Update, Falcon 9 Display, N Shore Heli Rte

Also: Aerosim Scholarship, Santa Monica Nonsense, Marine One, UAV Developer Kit, FAA Penalty, F-35 Weapons Test, Coastal Helicopters The Cessna Citation Longitude moves closer to i>[...]

Prince Harry Helps Thwart Elephant Poachers In Africa

Flies Helicopters Over Liwonde National Park As A Spotter Prince Harry has traded his military uniform for a civilian flight suit, and most recently is assisting in an effort to th>[...]

ANN's Daily Aero-Linx (08.27.16)

Experimental Soaring Association Formerly known as the Sailplane Homebuilders Association, the ESA is a national source for information regarding the design, building and flying of>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

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