DE2755417A1 - Capsize resistant rig for dinghy - has mast with sprung base and tipping axis above water-line - Google Patents

Abstract

The rig for the small sailing craft has the mast pivoted at a point above the waterline and linked to the hull by a spring or with a counterweight under that point. Any large wind forces or sudden gusts tilt the sail without disturbing the trim of the hulls. The hulls remain nominally upright and do not take in any water. The screw is able to correct the trim of the sail before the craft becomes unstable.

Description

Construction description for changing the rig to sail

Vehicles The capsizing of the sailing boats is very often the cause of fatal sailing accidents.

It is caused by the shear force of the wind hitting the mast presses with the sail around the longest axis of the boat down to the surface of the water.

Since the pivot point is below the waterline, this works Boat full and, if there is not enough buoyancy, it can sink.

With sailing yachts this is prevented by a deep under the waterline attached keel loaded with appropriate ballast.

so that the transverse force of the wind is balanced and the vehicle be prevented from capsizing.

In order to prevent capsizing safely, the ballast must be very large and the keel must be very deep below the waterline.

This means that these boats are only sailed in deep waters can and by additional weights not required for the construction, can reach low driving speed.

My design makes the vehicle capsize-proof without the aforementioned To have disadvantages.

The attached drawing no. 100 shows a sailing vehicle that is used in Strong winds up to storm force can be sailed safely and sportily.

On the two floats A and B there is a frame in the front half mounted, which connects the two floats with each other and as in cross-section b. shown forms a triangle, in the vertex C of which there is a bearing point for the mast.

The mast is rotatably mounted around the longitudinal axis of the vehicle, and is given a counterweight below this pivot point.

So that the mast is designed as a two-armed lever, on whose low-force the transverse force of the wind attacks at the level of the sail's center of gravity and on its load arm the counterweight, which is additionally reinforced by the weight of the sailor, counteracts the transverse force of the wind.

In very strong winds, the power arm and load arm can move horizontally incline without the two swimmers of the vehicle changing their position relative to the surface of the water change.

In practical terms, this means that the sailing vehicle cannot overturn.

The sailor can also move the center of gravity from the pivot point influence the inclination of the mast, so that the sail is always gets a favorable position to the wind.

The drawing no.1001 also shows a capsize-proof sailing vehicle, which is intended for larger offshore sailing tours.

On the two floats A and B there are 2 frames, namely 1 frame mounted in the front part and a frame in the rear part of the float.

The two racks connect the floats to each other, as well the racks form triangles (see view b) in whose vertices the Pivot bearings are located.

A hollow shaft (tube), which is guided through the bearings, forms the Pivot point for the mast in the power arm area and for the cabins including the Payload in the load arm area.

The rigging including the boom, the stage and the shrouds also rotate around this pivot point.

As with the aforementioned vehicle, the transverse force is also here of the wind in the power arm is passed on to the payload in the load arm via the pivot point.

The position of the floats remains the same with every inclination of the mast always the same to the surface of the water, so that capsizing is also impossible.

The construction of the float can be made regardless of stability of the vehicle aerodynamically unfavorable.

Claims (1)

Claims: Generic term: New type of rig of a sailing vehicle Sailing vehicle with the rig around a pivot point above the waterline around the Longitudinal axis can swing out to starboard or port without damaging the debris change their position in relation to the water level. Below the pivot point but still above the water level a nacelle to accommodate the payload and crew is provided with the mast is rigidly connected and can oscillate in the opposite direction. Characteristic part: indicated by the fact that it is on a support structure the pivot point is established by the bearing and axle - shown in the drawing No. 100 or 101 of October 23, 1977 -. The mast and gondola form this pivot point a two-armed lever in which the greater torque of the gondola lifts the mast in a vertical position Holds position. Due to the transverse force of the wind acting in the center of gravity of the sail, Swing the mast out to the leeward side and thus avoid gusts of wind in strong winds. At the same time the gondola swings out in the opposite direction and loads thereby the floats evenly.