Velocity Made Good AS WITH SAILING, the fastest way to the mark is seldom a direct line; thus the tactics of changing directions (tacking & jibing) while maintaining the course will maximize your boat speed. The calculations of these required adjustments, called “Velocity Made Good”, are ...
12.for skimming over water towed by a speedboat.由高速游艇牵引在水上滑过。 13.The sailing boat fell foul of a motor speed-boat in midriver.帆船在河中央与一艘快速汽艇相撞。 14.The fast cruiser soon overhauled the old cargo boat.快速巡逻艇迅即赶上那艘旧货船. 15.a motorboat designed so th...
If the tracking trajectory falls within this dead zone, the expected heading must first be adjusted to ensure that the unmanned sailboat avoids entering the sailing dead zone. The expected velocity must be designed to reduce the longitudinal error to zero, although the lateral error cannot be ...
Primitive sailing vessels, as well as primitive windmills, have been primarily aimed at utilizing the drag force. It is possible, however, with suitably constructed airfoils, to make the lift force one or two orders of magnitude larger than the drag force and thereby effectively approach the ...
It should be noted that when 𝑉𝑅(𝒗)=1VR(v)=1, UUV sailing at 𝒗v must collide with an obstacle. So 𝒗v is not desirable, and 𝐽𝑑(𝒗)Jd(v) is given the maximum value as a punishment. From what has discussed above, the collision process based on the improved speed...
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It should be noted that when 𝑉𝑅(𝒗)=1VR(v)=1, UUV sailing at 𝒗v must collide with an obstacle. So 𝒗v is not desirable, and 𝐽𝑑(𝒗)Jd(v) is given the maximum value as a punishment. From what has discussed above, the collision process based on the improved speed...