Stabilization mechanism for helicopter pad with four degrees of freedom

• Autorzy: Brewczyński D. , Tora G.

Identyfikatory

DOI

10.5604/12314005.1165947

• Języki publikacji: EN

Abstrakty

EN

Helipad located on ships greatly increases their ability to perform tactical and logistical abilities. They allow performing reconnaissance from the air, transportation of cargos and people to and from the ship. Landing on a moving ship particularly small size during bad weather is not a safe manoeuvre. Article provides an overview of existing solutions that improve safety during the landing manoeuvre of the helicopter to the ship and describes an innovative mechanism with can stabilize helicopter pad in four degrees of freedom. This solution is characterized in that the landing plate is movable and actuated simultaneously by two support plates and two levers. Plates and levers are driven by separate linear motors that move along the guides connected to the base. The main feature of the mechanism is that when the base is not stable, it can reduce the linear movement of the landing platform in the vertical and transverse direction and angular displacement around an axis perpendicular and parallel to the axis of the ship. A preferred feature of the mechanism is that in folded position it occupies relatively little space. In addition, advantageous attribute of the mechanism is its large working area, enabling the reduction of high amplitude vibration. The article contains a calculation of the kinematics for the proposed structure of the mechanism. It also includes speed drives waveforms, which are the result of simulations for the input parameters of the ship movement.

Słowa kluczowe

EN

mechanical engineering; maritime engineering; kinematic analysis; mechanism design; safety

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2015
• Tom: Vol. 22, No. 3
• Strony: 7--12
• Opis fizyczny: Bibliogr. 10 poz., rys.

Twórcy

autor

Brewczyński D.

• Cracow University of Technology Faculty of Mechanical Engineering, Institute of Machine Design Jana Pawła II Avenue 37, 31-864 Krakow, Poland tel.: [phone], fax: [phone]

autor

Tora G.

• Cracow University of Technology Faculty of Mechanical Engineering, Institute of Machine Design Jana Pawła II Avenue 37, 31-864 Krakow, Poland tel.: [phone], fax: [phone]

Bibliografia

• [1] Patent: US 2010/0224118 A1, Helicopter Landing Platform Having Motion Stabilizer for Compensating Ship Roll and/or Pitch, 2010.
• [2] Brewczyński, D., Tora, G., Dynamic positioning system of helicopter pad on the ship, Journal of KONES Powertrain and Transport, Vol. 21, No. 4, pp. 21-27, 2014.
• [3] Dasgupta, B., Choudhury, P., A general strategy based on the Newton-Euler approach for the dynamic formulation of parallel manipulators, Mechanism and Machine Theory, Vol. 34, pp. 801-824, 1999.
• [4] Ider, S. K., Inverse dynamics of parallel manipulators in the presence of drive singularities, Mechanism and Machine Theory, Vol. 40, pp. 33-44, 2005.
• [5] Sanchez-Lopez, J. L., Pestana, J., Saripalli, S., Campoy, P., An approach toward visual autonomous ship board landing of a VTOL UAV, J. Intell. Robot Syst., Vol. 74, pp. 113-127, 2014.
• [6] Tora, G., Modeling a platform mechanism of active cab suspension in heavy duty machines, Publisher PK, 2012.
• [7] Tora, G., Mechanizm stabilizujący ruchome lądowisko helikopterów, patent Application No. P.411005, 2014.
• [8] Tsai, L.-W., Solving the inverse dynamics of a Stewart-Gough manipulator by the principle of virtual work, Journal of Mechanical Design, Vol. 122, pp. 3-9, 2000.
• [9] CILAS HVLAS Helicopter Visual Landing Aid System, http://www.cilas.com/helicopter-visual-landing-aids.htm.
• [10] Prism Defence company that develops support systems for helicopters landing on the ships: www.prismdefence.com/index.html.