Fast Sailing Trimaran Hydrofoil Unmanned Control
- a three-point glider uses the tunnel effect created by the front of the hull with two floats (outriggers), while the aft float carries the propulsion system, two jet engines with variable thrust vector in the stern of the side outriggers. The average speed a trimaran can reach is 82 knots (about 152 km/h), accelerating in just a few seconds. Trimarans have a large wetted hull surface.
- very elongated bow for stability and resistance to waves
- double retractable hydrofoils on each side angled longitudinally and transversally
- the underwater wings act as anchors to enhance stability
- 70 feet long and 34 feet wide, several times the length of an average ocean and sea wave
- geometry with a highly tapered bow, allows you to effectively cut the wave along and across its cross section
- the trimaran scheme is considered very promising, especially the scheme with lateral outriggers - small floats that allow increasing the deck area while lengthening the main hull
- all controls are concentrated in the cockpit, the boat has fore and aft ram bulkhead, fully enclosed cockpit, wind deflector and scupper for overboard water removal (flood wave, atmospheric)
Synergy of wind power, jet propulsion, and hydrofoils[edit | edit source]
In a true subtropical wind of 12-20 knots, a trimaran can reach a speed of 8-12 knots (the guiding or pennant wind accelerates to 20-30 knots due to the addition of the true and course wind). There are many examples when the average speed of a trimaran reaches 25-27 knots under sail. After adding about 30 knots of course wind speed using the propulsion engines, the pennant stack wind accelerates to 50-60 knots, providing more thrust by means of sails (25-45 knots). The total speed increases up to 55-75 knots. At the same time, the lifting force of the hydrofoils lifts the hull out of the water, reducing the wetted area and reducing hydraulic resistance. The speed increases up to 65-85 knots. The lighter carbon fiber hull and the sail system with increased sail area (mainsail and 3 jibs), which together form a system that effectively prevents airflow stall, are particularly noteworthy.