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

AMA Drone Report

Airborne-Monday

Airborne-Tuesday

Airborne-Wednesday

Airborne-Thursday

Airborne-Friday

Airborne-Unmanned w/AUVSI

Airborne On ANN

AMA 06.29.17

Airborne 06.26.17

Airborne 06.27.17

Airborne 06.28.17

Airborne 06.29.17

Airborne 06.23.17

Airborne-Unmanned 06.27.17

Airborne-YouTube

AMA 06.22.17

Airborne 06.26.17

Airborne 06.27.17

Airborne 06.28.17

Airborne 06.29.17

Airborne 06.23.17

Airborne-Unmanned 06.27.17

XPONENTIAL Innovation Preview -- www.allthingsunmanned.com

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

AMA Drone Report 06.22.17: FAA Reauthorization, Rotor Riot Int'l, DRL on ESPN

Also: Drones at Oshkosh!, Drone Regulatory Effort, AMA Drone Report-Help Wanted, Aero-TV: MultiGP Drone Racing The House of Representatives has published initial language to reauth>[...]

Airborne-Unmanned 06.27.17: AUVSI On Senate Bill, Intel Olympics, NIGHTWARDEN

Also: DRL Winner $$, Kespry Enters Insurance Sector, Drone Sim Market, Automated Vehicles Symposium Brian Wynne, president and CEO of AUVSI, issued a statement on the unmanned airc>[...]

Airborne 06.28.17: Teen Solos Jenny, SCOTUS v E Hampton, Balloon Pilot Medicals

Also: UK Drone Regs, Senator James Inhofe, Rocketry Students, Av HoF, GPS III, Solar Eclipse, FlightDeck Pro EFB Something amazing occurred at the Golden Age Aviation Museum in Bet>[...]

Airborne 06.28.17: Teen Solos Jenny, SCOTUS v E Hampton, Balloon Pilot Medicals

Also: UK Drone Regs, Senator James Inhofe, Rocketry Students, Av HoF, GPS III, Solar Eclipse, FlightDeck Pro EFB Something amazing occurred at the Golden Age Aviation Museum in Bet>[...]

Airborne 06.27.17: SpaceX Doubles!, Sean Tucker Retirement, FA Changes

Also: Shoreham Update, Aero-Calendar, AUVSI, Fighter Pilots, André Borschberg, Airport Crimes, Drone Conference SpaceX, in the midst of a greatly accelerated launch pace, pu>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

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