| 摘要 |
<p>PURPOSE: An expandable wind for a rotor aircraft is provided to improve the controllability of a lift force and a thrust force for a main rotor, and to sharply reduce the descending velocity of a helicopter, thereby performing a safe emergency landing. CONSTITUTION: An expandable wind for a rotor aircraft includes a wing part and an air feeding part. The wing part comprises a main wing (111), an auxiliary wing (112), and a moving guide part (113). The main wing is formed at the lower side of the fuselage of the rotor aircraft. The hollow main wing expands and contracts left and right according to injecting and discharging air through an air inlet (114). The auxiliary wind is extended in the width direction of the main wind, and expands and contracts left and right according to injecting and discharging the air. The moving guide part inside the main wind guides the expansion of the main wind, and provides a supporting force. The air feeding part is formed with an air feeding unit (121). The air is injected to or discharged from the wing part by the air feeding unit. [Reference numerals] (121) Air feeding unit</p> |
