Detector for Gradient of Helicopter Landing Area(HLA) 直升机降落场坡度探测仪
The helicopter has the advantage of being able to vertical take-off and landing, side flying, hovering etc. Because of its flexible flight strategy, the helicopter can also flight free and hover in the air for a long time even in a limited area. 直升机的优势在于能够垂直起降、侧飞、盘旋等。由于其飞行策略的灵活多变,即使在受限制的区域,直升机也可以自由飞行,并能够在空中长时间悬停。