Tech

May 1, 2012

ONR-sponsored Flexrotor program takes off for next phase

by Katherine H. Crawford
Arlington, Va.

The Office of Naval Research-sponsored Flexrotor vertical takeoff and landing unmanned aerial vehicle entered the next development phase in delivering improved maritime surveillance capability April 30.

The contract is awarded for the flight controls component.

During this phase, Aerovel Corp. will advance Flexrotor’s capability with an upgraded propulsion system to transition from vertical to cruising flight, and to land in crosswinds and high winds. The aircraft’s first major milestone was in August 2011, when it successfully transitioned from horizontal to vertical flight and back again.

The small UAV features a unique design. It has an oversized propeller with helicopter-like controls for vertical takeoff and landing, and the wings of a conventional aircraft. The goal is that it will take off vertically, cruise efficiently horizontally and then land vertically.

“With Flexrotor, the two biggest benefits to Sailors and Marines would be the ability to do extended maritime surveillance from a ship, and to do so with a small footprint,” said John Kinzer, ONR program officer for Air Vehicle Technology.

Taking up less than one-half the space needed by other UAVs, Flexrotor would give Sailors compact, ship-launched, eye-in-the-sky capability. Additionally, it could stay airborne for a longer period of time. Thus, Flexrotor could help meet the Navy’s perpetual need for more and better maritime surveillance.

A vertical takeoff/landing craft requires a complex propulsion and flight control system. The propeller needs to be big enough to provide sufficient lift to take off vertically, yet small enough to be efficient while in horizontal flight. The flight controls must provide powerful and precise control in vertical takeoffs and landings, and efficient, low-drag control in forward flight. Perfecting both the rotor and other flight capabilities requires a constant balancing act among power, efficiency and weight, and this is what Tadd McGeer, Flexrotor’s inventor, is working out during phase II.

Since test flights to date have occurred with light winds, Aerovel will begin testing in windy conditions, gradually increasing the aircraft’s operating envelope.

Another aspect of the program, sponsored by the Naval Air Warfare Center Aircraft Division, is to develop an autonomous servicing capability. Aerovel is creating an Automatic Servicing Platform that would serve as launch and landing pad, as well as maintenance bay. This could be useful when deploying the Flexrotor to remote areas, as the aircraft could use this all-in-one hub without needing human assistance.

Kinzer said the platform could be beneficial for a special operations application of remotely siting a UAV.

“[The special ops personnel] like the idea of not exposing where they are when they need to launch and recover one,” Kinzer said. “They could put it on a mountaintop somewhere and just leave it to do surveillance.”

There are also potential applications to Arctic surveillance and weather reporting for the Navy and other organizations, such as National Oceanic and Atmospheric Administration.

ONR provides the science and technology necessary to maintain the Navy and Marine Corps’ technological advantage. Through its affiliates, ONR is a leader in science and technology with engagement in 50 states, 30 countries, 1,035 institutions of higher learning and more than 900 industry partners. ONR employs approximately 1,065 people, comprising uniformed, civilian and contract personnel, with additional employees at the Naval Research Lab in Washington, D.C.

 

 




All of this week's top headlines to your email every Friday.


 
 

 

News Briefs February 27, 2015

Ukraine will start pulling back heavy weapons in the east Ukraine’s military says it will start pulling back its heavy weapons from the front line with Russian-backed separatists as required under a cease-fire agreement. The Defense Ministry said in a statement Feb. 26 that it reserved the right to revise its withdrawal plans in the...
 
 

Northrop Grumman’s AstroMesh reflector successfully deploys for NASA’s SMAP satellite

The NASA Jet Propulsion Laboratory successfully deployed the mesh reflector and boom aboard the Soil Moisture Active Passive spacecraft, a key milestone on its mission to provide global measurements of soil moisture. Launched Jan. 31, SMAP represents the future of Earth Science by helping researchers better understand our planet. SMAP’s unmatched data capabilities are enabled...
 
 
NASA photograph by Brian Tietz

NASA offers space tech grants to early career university faculty

NASA photograph by Brian Tietz Tensegrity research is able to simulate multiple forms of locomotion. In this image, a prototype tensegrity robot reproduces forward crawling motion. NASA’s Space Technology Mission Director...
 

 
navy-china

USS Fort Worth conducts CUES with Chinese Navy

The littoral combat ship USS Fort Worth (LCS 3) practiced the Code for Unplanned Encounters at Sea (CUES) with the People’s Liberation Army-Navy Jiangkai II frigate Hengshui (FFG 572) Feb. 23 enhancing the professional ma...
 
 

AEGIS tracks, simulates engagement of three short-range ballistic missiles

The Missile Defense Agency and sailors aboard the guided-missile destroyers USS Carney (DDG 64), USS Gonzalez (DDG 66), and USS Barry (DDG 52) successfully completed a flight test involving the Aegis Ballistic Missile Defense weapon system. At approximately 2:30 a.m., EST, Feb. 26, three short-range ballistic missile targets were launched near simultaneously from NASA’s Wallops...
 
 

DOD seeks novel ideas to shape its technological future

The Defense Department is seeking novel ideas to shape its future, and officials are looking to industry, small business, academia, start-ups, the public – anyone, really – to boost its ability to prevail against adversaries whose access to technology grows daily. The program, called the Long-Range Research and Development Plan, or LRRDP, began with an...
 




0 Comments


Be the first to comment!


Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>