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As a maneuverable flexible aircraft, the parafoil has the advantages of superior aerodynamic performance, lightweight and small packing volume. The flexible tethered parafoil on a ship employs strong wind energy as an auxiliary propulsion power during high-altitude hover flights. The dynamic models in the longitudinal plane for the lift-off and the flight-assisting phares were established based on Newton-Euler's law. The simulation calculations for these two processes were carried out using the fourth-order Runge-Kutta method. The findings demonstrate that the tension of the tethered rope is excessive when the rope elongates too slowly during the lift-off phase. Furthermore, it becomes challenging for the parafoil to achieve a smooth take-off when the rope elongates too fast. Therefore, there exists a safe elongation velocity range of 1-2 m/s for the tethered rope during the lift-off phase. When operating within the safe velocity range, the faster the tethered rope elongates, the faster the parafoil lifts off, the smoother the trajectory is, and the smaller the tension and the angle of attack are. In the flight-assisting phase, parafoil-assisted propulsion's effectiveness is found to be positively correlated with the hovering height, the parafoil area, and the angle of attack. Besides, the range of safe operational angles of attack for a propulsion parafoil is considerably broader than that of an airdrop parafoil.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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