The invention discloses a lifting hook, and relates to a facility in the aerospace craft industry, in particular to a multi-purpose flight device which can be used in the manufacturing industry, fire rescue, disaster relief, business travel and the like, and a helicopter in the world has the common relative characteristics of large vibration, large noise, low safety coefficient, small load, high reliability and the like. The distance between the blade root width and the circumferential outer circle blade is in a narrower and slender shape, the total area of the propeller blade is smaller than one fourth of the area of a circle formed by rotation of the blade, the total area of the propeller blade of the helicopter is equal to or larger than the area of the circle formed by rotation of the blade, and at least one circumferential rib is arranged.
本发明为一种吊钩,涉及航空航天飞行器行业设施,具体的说是一种多种用途飞行装置,可用于制造行业、消防救援、救灾、商务出行等,世界上直升机有一个共同相对特点震动大、噪音大、安全系数低、载荷小,叶片根部宽距离圆周外圆桨叶叶片是越来越窄细长形状,螺旋桨桨叶面积总和不足桨叶旋转形成的圆面积的四分之一,本发明直升机螺旋桨桨叶面积总和等于大于桨叶旋转形成的圆面积,至少有一道环向筋。
Lifting hook
一种吊钩
2023-05-30
Patent
Electronic Resource
Chinese
IPC: | B64U |