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.


 
 

 

Headlines August 28, 2014

News: After F-15 jet crash in Virginia, rescue helicopters search for pilot - Helicopters are searching for an Air National Guard pilot after his F-15 jet crashed in the mountains of Virginia this morning, military officials said.   Business: U.S. Air Force 3DELRR contract expected soon - The U.S. Air Force could award the contract for its...
 
 

News Briefs August 28, 2014

Russian directing new offensive in Ukraine The Obama administration believes Russia is leading a new military counteroffensive in Ukraine. U.S. State Department spokeswoman Jen Psaki says Russia has sent additional columns of tanks and armored vehicles into its neighbor’s territory. She says the incursions suggest a ìRussian-directed counteroffensive is likely underway in the contested e...
 
 
LM-C5

Double Deuce

A U.S. Air Force crew ferried the 22nd C-5M Super Galaxy from the Lockheed Martin facilities in Marietta, Ga., Aug. 25. Aircraft 86-0011 was ferried by a crew led by Maj. Gen. Dwyer L. Dennis, Director, Global Reach Programs, O...
 

 
Northrop Grumman photograph

First ever RQ-4 Global Hawk hits 100th flight on NASA mission

Northrop Grumman photograph A historical look at the first Global Hawk (AV1) during its maiden flight over Edwards Air Force Base, Calif., on Feb. 28, 1998. AV1 has made history again with its 100th flight in support of NASA en...
 
 

Northrop Grumman’s CIRCM system completes U.S. Army flight testing

Northrop Grumman’s Common Infrared Countermeasures system recently completed another round of U.S. Army testing by demonstrating its capabilities on a UH-60M Black Hawk helicopter. The flight test was conducted at Redstone Arsenal in Huntsville, Ala., by the Redstone Test Center. The Northrop Grumman CIRCM system was subjected to rigorous conditions over a six-week period, after...
 
 
NASA photograph by David Olive

NASA completes successful battery of tests on composite cryotank

https://www.youtube.com/embed/qkGI6JeNY0E?enablejsapi=1&rel=0 NASA photograph by David Olive One of the largest composite cryotanks ever built recently completed a battery of tests at NASA’s Marshall Space Flight Cen...
 




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>