Jane Edwards
Lockheed Martin’s Sikorsky subsidiary has registered the proposed SB-1 Defiant coaxial helicopter as S-100 with the Federal Aviation Administration, Vertical reported Wednesday.
Sikorsky and Boeing have teamed up to develop and propose SB-1 Defiant for the U.S. Army’s Joint Multi-Role Technology Demonstrator program that would serve as a forerunner for the service’s Future Vertical Lift initiative.
“Our team is following the FAA’s process for how they formally designate experimental aircraft; however, we will continue to use SB>1 Defiant when describing our aircraft asset,†a spokesperson for Lockheed told the magazine.
The FAA registration came five months after the Boeing-Sikorsky team started testing the helicopter in preparation for its maiden flight under the service’s JMR TD program.
