Abstract:
PURPOSE: A wind tunnel testing apparatus and method are provided to measure the power and the moment which act on a rotator, and the rotation number and speed of the rotator accurately and efficiently. CONSTITUTION: A wind tunnel testing apparatus includes a supporting member(100) which tilts a rotator(11) at a specific angle to the direction of compressed fluid and includes a flow channel for actuating fluid, a locking unit(200) which locks or releases the rotator, a rotating unit(300) which rotates the rotator by the actuating fluid when releasing the locked rotator, and a sensing unit(400) which measures the clamping force which acts on the rotator by the Magnus effect during the rotation of the rotator.
Abstract:
본 발명은 비행체 바디 내에 밸런스와 연결되는 지지봉에 설치되는 변형 방지부를 포함하는 비행체 모형을 제공한다. 상기 변형 방지부는 상기 밸런스의 변형에 의하여 상기 비행체 바디의 내부와 접촉하여 상기 밸런스의 과부하를 방지한다. 따라서 상기 비행체 모형의 크기에 따라 적절한 밸런스가 과부하에 의하여 손상되는 것을 방지한다.
Abstract:
본 발명은 풍동시험모형 내부에 배치되어 상기 풍동시험모형의 내부로 통과하는 유량을 조절하는 초음속영역의 풍동시험모형용 유량조절장치에 관한 발명이다. 서보모터를 이용하여 서로 상대 직선이동하는 제1 및 제2 바디를 포함하고, 모터제어부를 포함하여 상기 풍동시험장치의 풍동제어 시스템과 통신한다. 따라서, 초음속영역을 비행하는 실제 비행체 내부의 유량을 모사할 수 있으며, 통신에 의하여 상기 유량조절장치와 풍동시험모형의 자동화를 구현할 수 있어, 풍동시험자료의 신뢰성을 향상시킬 수 있다.
Abstract:
A positive pressure-type gas sample collector and an operation system thereof using wireless communication are provided to check the collecting state of a collecting bag in real time by mounting the collecting bag outside without keeping an internal vacuum condition. A positive pressure-type gas sample collector comprises a gas intake pipe(21), a flow rate control valve(22), a gas pump(23), a manifold(24), at least one solenoid valve(25), a microprocessor(27), a case, and at least one collecting bag(26). The gas intake pipe is installed to intake a gas sample. The flow rate control valve is mounted to control the quantity of gas passing through the gas intake pipe. The gas pump provides intake pressure to the gas intake pipe at one side and discharge pressure at the other side. The manifold is formed with an inlet receiving the gas sample discharged from the other side of the gas pump, and at least one outlet outputting at least one passage. The solenoid valve is mounted to open and close the outlet. The microprocessor controls the operation of at least one of the flow rate control valve, the gas pump, and the solenoid valve. The case is mounted with at least one of the gas intake pipe, the flow rate control valve, the gas pump, the manifold, the solenoid valve, and the microprocessor inside. The collecting bag is connected to each outlet of the manifold at an outside of the case to keep the gas sample.