Oleo-dynamic, pneumatic, electro-mechanical and computerized test benches



     
 In specific sector of apparatuses related to experimental research, are specifically projected and realised test benches, automatic machines and any other kind of accessories for any type of use.  
     
     

Electro-mechanical test bench for the automatic displacement of weights on the models of "MORO di VENEZIA" and "LUNA ROSSA"

The system allows to displace appropriate weights up to 4500 N into a plane installed on the model according to pre-fixed logics so to simulate the variable displacement of the crew.  The system has been specifically projected and realised for I.N.S.E.A.N. (Rome) and used for the tests on the model of  "MORO di VENEZIA" for the Americas Cup and re-utilised for the tests on the model of "LUNA ROSSA".

 
   

Oleo-dynamic test bench for models of submarines in ship model basin

The system has been realised in such a manner so to execute on models of submarines movements of X, Y, Z translations, roll, pitch and yaw. It is composed of a metal structure attached to a dynamometric carriage, which runs along an hydrodynamic towing tank with length close to 500 m. The external structure of the system is connected to the model by means of a vertical pole that allows the immersion of the model to a maximum dept of almost 3 m. At the end of the vertical pole is positioned the underwater system that operate roll and pitch movements of the model. Electrical, pneumatic and oleo-dynamic plants that command and control the system pass through the vertical pole. Hydrodynamic actions on the model are measured by means of a 6 component dynamic cell and transferred to an acquisition system on the dynamometric car.

 
   

Interface for Y, Z translation and roll of ship models for hydrodynamic test in ship model basin

The system allows to realise movements of Y translation, yaw and roll, meanwhile the movement of pitch and Z translation are still free. It is composed of a metal structure attached to a dynamometric carriage, witch runs along an hydrodynamic towing tank with length close to 500 m. The external structure of the system is connected to the model by means of a vertical pole at the end of whom is attached the Interface. Hydrodynamic actions on the model are measured by means of a 6 component dynamic cell and transferred to an acquisition system on the dynamometric carriage.

 
   

System for the measure of Inertial Moments of submarines and ships models with weight up to 50.000 N for tests in ship model basin

The system allows to determine Inertial Moments of elements, in particular ships and submarines models with weight up to 50.000 N , by means of the measures of the typical parameters of the proper oscillation to whom the elements are subjected. In particular, for models of submarines and ships, are measured and determined Inertial Moments of roll, pitch and yaw.

 
   

Apparatus for performance tests on propellers in hydrodynamic towing tank

The apparatus has been realised for  I.N.S.E.A.N. of Roma. It is installed on an hydrodynamic carriage for towing tank and allows to execute hydrodynamic tests on propellers, measuring  values of torque and thrust. The underwater part of the system, realised in stainless steel and aluminium league, contains the dynamometer which measures the values of  torque and thrust. The external part allows the immersion of the propeller up to 900 mm by means of a vertical fin, the yaw positioning of +/- 90 and the pitch positioning of +/- 15. On the apparatus is installed a brush-less motor with maximum torque of 40 Nm up to 3000 rpm.

 
   

Structure for the automatic movement and control of electro-fans for wind generation on ship models in naval basin

The structure has been realised in such a manner to execute the movements of Y translation and yaw of a metallic panel frame which contains axial electro-fans so to simulate the action of the wind on ship models.

 
   

System for the 3-dimensional positioning of laser device for measures in naval basin and circulating water channel

The system allows to realise a 3-dimensional positioning of laser devices or any other instrument utilised for high precision measures. Translations of the elements are realised by means of precision rails and actuated by step motors with closed loop control, coupled with ball bearing screws. The entire structure is realised in stainless steel and aluminium league.

 
   

Auxiliary dynamometric carriage for tests on models in naval towing basin

The structure allows to execute hydrodynamic tests on models in naval towing tank. 

The reticular frame, that constitute the carriage, gives to the system an high structural stiffness which  allows to minimize vertical and horizontal oscillations under variable forces.

Main utilised materials for the construction of the four main elements constituting the structure are squared section tubular in carbon steel. The carriage has been realised so to minimize translation friction so to consent manual thrust movement, and is also provided with two towing rods for the connection to the existing towing dynamometric carriage.  

 
 

Water waves generators for tests on coasts and ports models also related to the project of "Save Venezia"

They have been realised in particular to verify the functioning of the oscillating bulkheads related to the project of " Save Venezia". The system allows to generate regular sinusoidal type and composed with translation sinusoidal type waves with wide range of frequencies and maximum width up to 700 mm. The system is realised by means of a single flap moved using two combined oleo-dynamic cylinders commanded and controlled with proportional valves by  a dedicated control unit.


3EMMEGI S.a.s. - Robotic, Automation, Special Machines

 

Via delle Grotte, 37 - 00067 Morlupo (ROMA)

Tel./Fax 0039 06 9070720

e-mail: info@3emmegi.com