WASHINGTON, 6 Dec. 2013. U.S. Naval Research Laboratory (NRL) staff launched an all-electric, fuel cell-powered, unmanned aerial system (UAS) from a submerged submarine under a project funded by SwampWorks at the Office of Naval Research (ONR) and the Department of Defense Rapid Reaction Technology Office (ODD/RRTO).
Submarine sailors fired the NRL-developed eXperimental Fuel Cell (XFC) UAS from the submarine's torpedo tube using a Sea Robin launch vehicle system designed to fit within an empty Tomahawk launch canister (TLC), which are used to launch Tomahawk cruise missiles.
Following deployment from the TLC, the Sea Robin launch vehicle with integrated XFC rose to the ocean surface where it appeared as a spar buoy. Upon command of Providence Commanding Officer, the XFC vertically launched from Sea Robin and flew a several-hour mission demonstrating live video capabilities streamed back to Providence, surface support vessels, and Norfolk before landing at the Naval Sea Systems Command Atlantic Undersea Test and Evaluation Center (AUTEC), Andros, Bahamas.
The demonstration took place with support from the Los Angeles-class submarine USS Providence (SSN 719) and the Naval Undersea Warfare Center-Newport Division (NUWC-NPT). From concept to fleet demonstration, this idea took less than six years to produce results at significant cost savings when compared to traditional programs often taking decades to produce results.
The submerged launch of a remotely deployed UAS offers a pathway to providing mission-critical intelligence, surveillance, and reconnaissance (ISR) capabilities to the U.S. Navy's submarine force, officials say.
“This six-year effort represents the best in collaboration of a Navy laboratory and industry to produce a technology that meets the needs of the special operations community,” explains Dr. Warren Schultz, program developer and manager, NRL. “The creativity and resourcefulness brought to this project by a unique team of scientists and engineers represents an unprecedented paradigm shift in UAV propulsion and launch systems.”
"Developing disruptive technologies and quickly getting them into the hands of our sailors is what our SwampWorks program is all about," says Craig A. Hughes, acting director of innovation at ONR. "This demonstration really underpins ONR's dedication and ability to address emerging fleet priorities."
The NRL Chemistry and Tactical Electronic Warfare Divisions team includes the design-builder of the Sea Robin, Oceaneering International Inc., Hanover, Md.; fuel cell developer Protonex Technology Corp., Southborough, Mass.; and NUWC-NPT’s Autonomous and Defensive Systems Department for Temporary Alteration (TEMPALT) and test demonstration support.
The XFC is a fully autonomous, all-electric, fuel cell-powered folding wing UAS with an endurance of greater than six hours. The non-hybridized power plant supports the propulsion system and payload for a flight endurance that enables relatively low-cost, low-altitude, ISR missions. The XFC UAS uses an electrically assisted take off system which lifts the plane vertically out of its container and therefore, enables a very small footprint launch such as from a pickup truck or small surface vessel.