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A DYNAMIC MODEL OF TWO-BODY MECHANICAL SYSTEM “AN AIRSHIP TOWED BY A VESSEL” WITH AUTOMATIC TENSION CONTROL

Cuong Duc Nguyen, Duyen Duy Tran, Phuong Duy Mai

Abstract


The air transportation system using lighter-than-air vehicles (airship) towed by a vessel that allows a significant increase in the rate of payload on the airship. The airship is equipped with four or more control rotors (quadrotor/multirotor) to improve the stability of the airship when affected by the wind, at the same time the rotors ensures vertical take-off and landing. This transportation system promises to create a highly efficient, safe and environmentally friendly flight vehicle, especially when it is used to carry high-altitude sightseeing tourists [1]. The paper [2] presents a model of two-body dynamics with consideration of wind from different directions and has indicated that an automatic tension control is required to avoid "jerk" phenomena leading to structural damage. This article develops the above-mentioned dynamical model when an automatic tension control system is installed, which allows to determinate the main requirements for the control system: The inertia of the actuator should not to be too large and the system must have warning when the towing rope length approaches the max and min limits Investigations on the above model also show that although there is an automatic tension-maintaining device, there is still a need of an elastic device to reduce the requirements for fast reaction of the actuator.

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References


Mô tả sáng chế, “Hệ thống vận chuyển trên không tốc độ chậm có điều khiển,” Công báo Sở hữu công nghiệp số tháng 4/2018, Cục Sở hữu trí tuệ Việt Nam.

Nguyễn Đức Cương, Trần Duy Duyên. Xây dựng mô hình động lực học cơ hệ ca nô kéo khí cầu bay có điều khiển. Kỷ yếu Hội thảo quốc gia “Ứng dụng công nghệ cao vào thực tiễn”, Viện KHCNQS-Đại học Thái Nguyên, Hà Nội, 8-2018

Nguyễn Đức Cương, “Mô hình hóa chuyển động của khí cụ bay tự động,” NXB Quân đội nhân dân (2002).

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