According to one embodiment of the present invention, a fiber reinforced plastic propeller for an unmanned aerial vehicle using a foam material includes: a foam core positioned in the fiber reinforced plastic propeller; a first prepreg layer stacked on a surface of the foam core; and a second prepreg layer stacked on a surface of the first prepreg layer, wherein compression strength of the foam core is 0.5 to 1.5 MPa in case of compression by 20 to 80% compared to a thickness of the foam core, thereby implementing high specific strength and specific rigidity, having no external defect such as a curve in a pinhole and a fiber pattern through control of the compression strength of the foam core, and improving aerodynamic performance and efficiency of the propeller.
본 발명의 일 실시예에 따른 폼재를 이용한 무인항공기용 섬유강화플라스틱 프로펠러는 내부에 위치한 폼코어, 폼코어의 표면에 적층된 제1 프리프레그층 및 제1 프리프레그층의 표면에 적층된 제2 프리프레그층을 포함하며 폼코어의 압축강도는 폼코어의 두께 대비 20 내지 80% 압축 시 0.5 내지 1.5MPa인 구조를 통해 높은 비강도, 비강성을 구현할 수 있고, 폼코어의 압축강도 제어를 통하여 핀홀 및 섬유패턴 굴절과 같은 외관 결점이 없으며 프로펠러의 공기역학적 성능 및 효율이 향상된 프로펠러를 제공할 수 있다.
FIBER REINFORCED PLASTIC PROPELLERS FOR UNMANNED AERIAL VEHICLE USING FORM AND MENUFACTURING METHOD THEREOF
폼재를 이용한 무인항공기용 섬유강화플라스틱 프로펠러 및 그의 제조방법
2021-02-05
Patent
Electronic Resource
Korean
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