2007: June Sea Trial
After an extensive regime of at-sea development and testing, Harbor Wing conducted its initial proof of concept and proof of technology sea trial of its wind-powered autonomous AUSV HWT X-1 Prototype in open Pacific Ocean waters off Pearl Harbor on June 9, 2007. The prototype’s wing-sail, software and command-and-control systems gave exemplary performance, providing precise GPS course holding on extended transits along the pre-designated figure-eight patrol track (including GPS go-to points and interim track segments) and pivot-like course changes autonomously. The prototype’s sustained performance parameters were achieved despite strong winds and heavy seas culminating in sea state 4+. The sea trial results establish that the AUSV’s autonomous track- and station-keeping capabilities, including its crisp course changes, will support rigorous mission requirements.
2007: Performance Testing
The HWT X-1 Prototype successfully performs on-the-water tests
Harbor Wing’s unique WingSailTM design was put to the test at sea and performed exceptionally well. The driving power of the wingsail significantly exceeded expectations. Vessel handling and maneuverability characteristics were tuned by tail re-designs. It was determined that the wingsail, as designed, could drive a significantly larger vessel.
Under actual driving conditions, the design and functionality of the HWT X-1’s control mechanics facilitated smooth and exacting control of the vessel – with wing, tails and rudders delivering exceptional response under manual and fly-by-wire control.
HWT X-1’s initial remote guidance systems were tested for accuracy and response. The vessel was put through a battery of tests which demonstrated that it could be precisely and predictably controlled from a remote guidance station. It delivered exacting performance throughout a variety of directional tests including figure eights, departing and re-joining a specified course, multi-point stops and redirects, and a range of tacking exercises.
Vessel patrol pattern
The HWT X-1 was equipped with a hardened, weather protected full-motion and stop action video camera. While performing test maneuvers, HWT X-1 captured and transmitted motion video and photographs of designated “targets” to the remote control guidance station with high degrees of clarity and resolution.
Images captured by vessel-mounted camera and relayed to computer on shore
X-1 bucks waves on course off Pearl Harbor
- Autonomous wing-sail propulsion on GPS point figure-eight designated patrol track
- Precise course holding on extended transits
- Pivot-like course changes with autonomous tack and jibe
- Shipboard systems operated at and above design performance parameters - sea state 4-5