Topic
Transom
About: Transom is a research topic. Over the lifetime, 1600 publications have been published within this topic receiving 8919 citations.
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TL;DR: In this article, the steady wave patterns, Kelvin-wake spectra and wave resistance of realistic ship hulls are computed by a Rankine panel method and the importance of enforcing a Kutta-type condition of smooth flow detachment at the transom stern is demonstrated.
Abstract: The steady wave patterns, Kelvin-wake spectra and wave resistance of several realistic ship hulls are computed by a Rankine panel method. Wall-sided as well as transom-stern ships are studied over a broad range of Froude numbers and the importance of enforcing a Kutta-type condition of smooth flow detachment at the transom stern is demonstrated. The lack of numerical damping in the solution scheme permits the reliable prediction of the Kelvin wake far from the ship and allows its use in the evaluation of the free wave spectrum. The wave resistance is evaluated by pressure integration as well as momentum conservation and the merits of the latter method are discussed.
42 citations
TL;DR: In this paper, a T-foil near the bow and transom flaps are used to counteract each incident wave in a fast ship to counteract the negative effects of vertical acceleration.
40 citations
Patent•
01 Aug 1994
TL;DR: In this paper, a high performance boat stabilized through the use of foam stabilizing members is provided, and the boat has a rigid, planing hull including a transom, and a pair of curved sides extending forward from the transom to form a bow.
Abstract: A high performance boat stabilized through the use of foam stabilizing members is provided. The boat has a rigid, planing hull including a transom, and a pair of curved sides extending forward from the transom to form a bow. A bottom is joined to the sides forming a chine. The foam stabilizing members are mounted on the sides of the hull above the chine and extend from the transom along the length of the boat. The sides of the boat also include an upper and lower flange extending outwardly from the sides of the boat adjacent to the upper and lower edges of the stabilizing members at the location where the stabilizing members attach to the sides of the hull. The lower flange helps to ensure that water is not forced in between the sides of the boat and the stabilizing members, thus preventing possible damage to the boat. Additionally, the stabilizing members are attached to the side of the hull without the use of holes extending from the exterior to the interior of the hull, thus preventing water from seeping into the hull.
37 citations
Patent•
18 Mar 2002
TL;DR: In this paper, a railway car is assembled by inserting the ends of the bolster and transom into the window of a side frame, and then inserting the rocker bar through a passageway in the side frame to a position under the Rocker seat and on the bottom tension member of the sideframe.
Abstract: A railway car truck having a pair of side frames and a bolster and a transom extending transversely between the side frames. A respective rocker seat is rigidly and permanently attached to each end of the transom and is pivotally supported on a rocker bar that is supported by the tension member of a sideframe. The pivotal connection between the rocker seat and the rocker bar disposes the transom perpendicular to the side frame and provides pivotal movement of the side frame with respect to the transom. The railway car truck is assembled by inserting the ends of the bolster and transom into the window of a side frame, and then inserting the rocker bar through a passageway in the side frame to a position under the rocker seat and on the bottom tension member of the side frame. Springs are then inserted between the transom and the bolster such that the bolster is resiliently supported on the side frame.
37 citations
Patent•
12 Jul 1989
TL;DR: In this paper, the transom is mounted symmetrically on each side of the longitudinal axis of the hull and each trim tab includes a plate 15 mounted on at least two rocker arms 16 and two or more hydraulic actuators 20 and 21 for pivoting the plate 15 relative to the distal ends of the rocker arm 16.
Abstract: At least two trim tabs 12 are mounted on the transom 11 symmetrically on each side of the longitudinal axis of the hull 10. Each trim tab 12 includes a plate 15 mounted on at least two rocker arms 16 for pivotal movement relative to the transom 11 and two or more hydraulic actuators 20 and 21 for pivoting the plate 15 relative to the distal ends of the rocker arms 16.
36 citations