RU94010945A - Device for towing tests of models in model testing basin - Google Patents

Device for towing tests of models in model testing basin

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Publication number
RU94010945A
RU94010945A RU94010945/11A RU94010945A RU94010945A RU 94010945 A RU94010945 A RU 94010945A RU 94010945/11 A RU94010945/11 A RU 94010945/11A RU 94010945 A RU94010945 A RU 94010945A RU 94010945 A RU94010945 A RU 94010945A
Authority
RU
Russia
Prior art keywords
channel
rod
dynamometer
longitudinal
transverse
Prior art date
Application number
RU94010945/11A
Other languages
Russian (ru)
Other versions
RU2072681C1 (en
Inventor
О.Н. Беззубик
В.А. Беляшов
Ю.Н. Алексеев
Original Assignee
Центральный научно-исследовательский институт им. акад.А.Н.Крылова
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Центральный научно-исследовательский институт им. акад.А.Н.Крылова filed Critical Центральный научно-исследовательский институт им. акад.А.Н.Крылова
Priority to RU94010945/11A priority Critical patent/RU2072681C1/en
Publication of RU94010945A publication Critical patent/RU94010945A/en
Application granted granted Critical
Publication of RU2072681C1 publication Critical patent/RU2072681C1/en

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  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)

Abstract

FIELD: experimental hydromechanics of ships. SUBSTANCE: device is provided with dynamometer arranged between model being towed and rod rigidly secured on frame. Lateral stiffness of rod is varying in height. Rod is made in form of pipe provided with longitudinal ribs and two flanges at ends. Ribs have form of rectangular trapezium and form of rectangle in cross section. Ribs are provided in at least two radial orthogonal planes and are rigidly connected with pipe and with flanges by welding, for example. Larger side of rib base is connected with upper flange rigidly secured on frame and oriented along channel of basin by its longitudinal axis; lower flange of rod is provided with guide slot and is rigidly connected with dynamometer which has guide projection received by slot of flange for orientation of dynamometer along channel of basin. Dynamometer has two five-rod springs with one central rod and four peripheral rods which are provided with resistance strain gauge forming measuring sensors of axial, lateral and lifting forces and trim and drift force moment sensors. Peripheral and central rods of one spring have form of rectangles in cross section. Axes of these rectangles coincide with direction of longitudinal and transverse axes of channel of model testing basin and are oriented in direction of transverse axis of channel by their minimum lateral stiffness; peripheral rods of second spring which have form of rectangles in cross section and its central rod which is square in section are mounted in such position that their axes coincide with direction of longitudinal and transverse axes of channel of model testing basin; they are oriented in direction of longitudinal axis of channel by minimum lateral stiffness. EFFECT: extended range of simulated processes and external force frequencies reproduced by dynamometer; enhanced accuracy of measurements in dynamic mode of breaking ice cover.

Claims (1)

Изобретение относится к экспериментальной гидромеханике корабля и плавучих инженерных сооружений и касается оборудования для проведения гидродинамических исследований моделей в опытовом бассейне. Оно направлено на решение задачи расширения диапазона моделируемых процессов, частот внешних сил, воспроизводимых динамометром, повышения точности измерений в динамическом режиме разрушения ледового покрова. Для этого в устройстве динамометр установлен между буксируемой моделью и штангой, жестко закрепленной на раме, причем штанга выполнена с переменной по высоте поперечной жесткостью в виде трубы с продольными ребрами, ограниченной двумя фланцами, при этом ребра, имеющие форму прямоугольной трапеции, а в поперечном сечении - форму прямоугольника, установлены как минимум в двух радиальных ортогональных друг к другу плоскостях и жестко закреплены, например, сваркой с трубой и с фланцами, при этом большая сторона основания ребра соединена с верхним фланцем, жестко закрепленным на раме и ориентированным своей продольной осью вдоль канала бассейна, а нижний фланец штанги имеет направляющий паз и жестко соединен с динамометром, имеющим направляющий выступ, входящий в паз фланца для ориентации динамометра вдоль канала бассейна, при этом динамометр содержит две, изготовленные из единого куска металла, пятистержневые пружины с центральным и четырьмя периферийными стержнями, которые оснащены тензорезисторами и образуют измерительные датчики осевой, боковой и подъемной сил, а также датчики моментов сил дифферента и дрейфа, причем периферийные и центральный стержни одной пружины имеют в поперечном сечении форму прямоугольников, оси которых совпадают с направлениями продольной и поперечной осей канала опытового бассейна и ориентированы наименьшей поперечной жесткостью в направлении поперечной оси канала, а периферийные стержни второй пружины, имеющие в поперечном сечении форму прямоугольников, и ее центральный стержень квадратного сечения установлены таким образом, что их оси совпадают с направлениями продольной и поперечной осей канала опытового бассейна и ориентированы наименьшей поперечной жесткостью периферийных стержней в направлении продольной оси канала.The invention relates to experimental hydromechanics of a ship and floating engineering structures and relates to equipment for conducting hydrodynamic studies of models in a test pool. It is aimed at solving the problem of expanding the range of simulated processes, the frequencies of external forces reproduced by a dynamometer, and increasing the accuracy of measurements in the dynamic mode of ice cover destruction. To do this, in the device, a dynamometer is installed between the towed model and the rod rigidly mounted on the frame, and the rod is made with a transverse stiffness variable in height in the form of a pipe with longitudinal ribs, bounded by two flanges, while the ribs have the shape of a rectangular trapezoid, and in cross section - the shape of the rectangle, installed in at least two radial planes orthogonal to each other and rigidly fixed, for example, by welding with a pipe and with flanges, while the larger side of the base of the rib is connected to hnim flange rigidly mounted on the frame and oriented with its longitudinal axis along the channel of the pool, and the lower flange of the rod has a guide groove and is rigidly connected to a dynamometer having a guide protrusion included in the groove of the flange to orient the dynamometer along the channel of the pool, while the dynamometer contains two made of a single piece of metal, five-rod springs with a central and four peripheral rods, which are equipped with strain gauges and form measuring sensors of axial, lateral and lifting forces, as well as sensors of the moments of power of the trim and drift, the peripheral and central rods of one spring having the cross section in the form of rectangles whose axes coincide with the directions of the longitudinal and transverse axes of the channel of the experimental pool and are oriented by the smallest lateral rigidity in the direction of the transverse axis of the channel, and the peripheral rods of the second spring having a cross-sectional shape of rectangles, and its central square rod is set so that their axes coincide with the longitudinal directions th channel and transverse axes towing tank and oriented transverse rigidity lower peripheral rods in the direction of the longitudinal axis of the channel.
RU94010945/11A 1994-03-29 1994-03-29 DEVICE FOR TOWING TESTS OF A SHIP MODEL IN AN EXPERIMENTAL POOL RU2072681C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU94010945/11A RU2072681C1 (en) 1994-03-29 1994-03-29 DEVICE FOR TOWING TESTS OF A SHIP MODEL IN AN EXPERIMENTAL POOL

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU94010945/11A RU2072681C1 (en) 1994-03-29 1994-03-29 DEVICE FOR TOWING TESTS OF A SHIP MODEL IN AN EXPERIMENTAL POOL

Publications (2)

Publication Number Publication Date
RU94010945A true RU94010945A (en) 1996-08-27
RU2072681C1 RU2072681C1 (en) 1997-01-27

Family

ID=48434362

Family Applications (1)

Application Number Title Priority Date Filing Date
RU94010945/11A RU2072681C1 (en) 1994-03-29 1994-03-29 DEVICE FOR TOWING TESTS OF A SHIP MODEL IN AN EXPERIMENTAL POOL

Country Status (1)

Country Link
RU (1) RU2072681C1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU180204U1 (en) * 2017-03-28 2018-06-06 Виталий Алексеевич Пелешенко Installation for conducting hydrodynamic tests in the experimental pool
CN116990135A (en) * 2023-09-26 2023-11-03 衡水威格橡塑金属制品有限公司 Transverse rigidity testing device for metal hose

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU180204U1 (en) * 2017-03-28 2018-06-06 Виталий Алексеевич Пелешенко Installation for conducting hydrodynamic tests in the experimental pool
CN116990135A (en) * 2023-09-26 2023-11-03 衡水威格橡塑金属制品有限公司 Transverse rigidity testing device for metal hose
CN116990135B (en) * 2023-09-26 2023-12-12 衡水威格橡塑金属制品有限公司 Transverse rigidity testing device for metal hose

Also Published As

Publication number Publication date
RU2072681C1 (en) 1997-01-27

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