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:
PURPOSE: A flow rate controlling device for a supersonic speed wind tunnel test and a wind tunnel testing device with the same are provided to enable the sliding movement of first and second bodies by driving a servo motor and to prevent damage caused by excessively driving the servo motor as the driving of the servo motor is controlled by a stopper. CONSTITUTION: A flow rate controlling device for a supersonic speed wind tunnel test includes first and second housing units, a servo motor (312), and a ball screw (304). The first and second housing units are received inside a wind tunnel testing model. The first and second housing units include spaces receiving fluid and relatively moved in one direction, thereby being joined to make the space enlarged or reduced. The servo motor is mounted on the first housing unit and controls the movement of the second housing unit. The ball screw is fixed inside the second housing unit. The ball screw is connected to the servo motor and makes the second housing reciprocate in one direction. [Reference numerals] (AA) Wind
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:
PURPOSE: A wind tunnel testing apparatus including a rotation number measuring apparatus, a dual mode rotation number measuring method and a dual mode rotation number measuring apparatus is provided to measure the rotation number of a rotator which rotates more slowly than a first cycle speed, measure the distance between the rotator and the rotation number measuring apparatus in real time by a distance measuring sensor, and continuously record the dynamic balancing characteristic of the rotator, thereby improving the rotational stability of the rotator. CONSTITUTION: A rotation number measuring apparatus(500) includes first and second sensors(521,522) which are formed on the inner peripheral surface of a rotator(11), outputting signals by sensing rotation of the rotator and outputting first and second measurement data forming a 90 degree phase difference, a reflection bushing(510) forming a first and second patterns(511, 512) having different reflectivity on the inner peripheral surface, a holder(525) in which the first and second sensors are mounted by being separated from the reflection bushing, a sensing unit including a distance measuring sensor(526) for measuring the distance between the holder and the rotator, a circuit unit converting the first and second measurement data into digital signals and outputting the digital signals, and a processing unit calculating the rotational numbers of the rotator according to the digital signals. [Reference numerals] (AA) Circuit unit; (BB) Processing unit; (CC) Wind tunnel testing data storage system;
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.