Ernst Otto Schlick

Ernst Otto Schlick ( born June 16, 1840 in Grimsby, † April 10, 1913 in Hamburg ) was a German naval architect.

Schlick wanted, following its early technical talent, a naval architect and are studied from 1858 at the Technical University Dresden. In 1869 he founded a shipyard in Dresden, which specialized in the construction of river ships. In 1875 he became a director for the North German shipyard in Kiel, in 1892 as director of the Bureau Veritas to Hamburg. After twelve years of activity in 1896 as Director of Germanischer Lloyd in Hamburg Schlick 1908 went into retirement.

Schlick became known through research on the disposal of ship vibrations. He developed a mass balance for ship machinery, which was used on almost all mail steamers and warships with piston engines. Another development was the ship's gyro to reduce rolling motions. This ship gyro was used in the steamers Fur Seal, Silvana and Lochiel for testing. In a letter to Arnold Sommerfeld Schlick 1909 described the basic fitness so that rolling movements to dampen, but kept the invention for not further maturing, as the apparatus for larger vessels would be too expensive. He published a "Handbook for the iron shipbuilding " and reported often before professional associations and journals on his research in the field of ship vibration.

The standing at the University of Applied Sciences of Hamburg Department of Mechanical Engineering and Production in the model for the simulation of ship vibrations is the original model that Otto Schlick anfertigte for the investigation of ship vibrations end of the 19th century. The hull is modeled by an elastic plank. The springs, in which the plank is suspended set the buoyancy of the water represents the springs are fixed to a framework. The mass of the hull are used here weights that can be easily moved. These weights are not original, but were replaced with identical replacement weights. To carry out studies used a model machine. Here is a three-cylinder machine to see its shaft can be adjusted at any crank angle by means of a clamping device. In addition, the connecting rod and piston rods can be removed at the outer cranks, so that the model represents a one-or two-cylinder engine. Schlick mentioned in an article in the "Journal of the Association of German Engineers " from 1894 also a vierkurbelige machine in which also let the crank angle arbitrarily set. The machine model is now being driven by a motor, originally this was done by a crank.

At the origination of the oscillations Schlick wrote in this article: "At the turn of a stationary ship free machine forces that take the hull in regular, alternately up and down acting in claim arise now. They are the mass effects of the up and down moving machine parts. Once one of the pistons with the associated piston and rod and the crosshead is thrown upward, creating a pressure up [ ... ]. This occurring at a steam engine, melt pressures are dependent on the weight of the moving masses and the size of the acceleration, or in other words: for a given machine of the number of revolutions. These forces are now regularly at every revolution of the engine once on [ ... ]. " End of the 19th century large fast steamers were increasingly built that had a reduction in the natural frequency of the hull result by its length and the lower mass. The ship's engines were not technically exceed the speed of 100 revolutions per minute. The frequency of the occurring forces of inertia of the machine that have turned the ship body vibrations were thus very close to each other or were possibly even the same size. This often led to structural damage and impaired the comfort of the passengers or crew.

• Shipbuilder
• German
• Person ( Grimsby )
• Born in 1840
• Died in 1913
• Man