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Data from Seawind website, which notes that performance data is from the Seawind 3000 with a Lycoming engine General characteristics Crew: 1 pilot Capacity: 3 adult passengers or 1 adult passenger and 3 children Length: 27 ft 2 in (8.28 m) Wingspan: 35 ft 0 in (10.67 m) Height: 10 ft 2 in (3.10 m) Wing area: 163 sq ft (15.14 m 2) Airfoil: NLF(1)-0215(F) Empty weight: 2,300 lb (1,043 kg) useful ...
True wind (V T) is the same everywhere in the diagram, whereas boat velocity (V B) and apparent wind (V A) vary with point of sail. Forces on sails result from movement of air that interacts with sails and gives them motive power for sailing craft, including sailing ships , sailboats , windsurfers , ice boats , and sail-powered land vehicles .
Another technique is to place the jib to windward (opposite to the main sail)—called "wing on wing" or one of several other terms—for a fore-and-aft vessel going dead downwind. [4] In light winds, certain square-rigged vessels may set studding sails , sails that extend outwards from the yardarms , to create a larger sail area for points of ...
The distribution of forces on a wing in flight are both complex and varying. This image shows the forces for two typical airfoils, a symmetrical design on the left, and an asymmetrical design more typical of low-speed designs on the right. This diagram shows only the lift components; the similar drag considerations are not illustrated.
A polar diagram, or polar plot, is a graph that shows a sailboat's potential speed over a range of wind speeds and relative wind angles. [1] It normally consists of the right side of a line chart with the radius representing the yacht speed and the angle representing the wind direction blowing from top to bottom.
Mean aerodynamic chord (MAC) is defined as: [6] = (), where y is the coordinate along the wing span and c is the chord at the coordinate y.Other terms are as for SMC. The MAC is a two-dimensional representation of the whole wing. The pressure distribution over the entire wing can be reduced to a single lift force
The natural outcome of this requirement is a wing design that is thin and wide, which has a low thickness-to-chord ratio. At lower speeds, undesirable parasitic drag is largely a function of the total surface area, which suggests using a wing with minimum chord, leading to the high aspect ratios seen on light aircraft and regional airliners ...
SeaWind Cruise Line, the operator of the SeaWind Crown and eventual subsidiary of Premier Cruises; Other. Seawind Ocean Technology, an offshore wind energy ...