RU117182U1 - RAIL STAND FOR DYNAMIC TRACK TESTING OF MATERIALS AND STRUCTURES FOR SHOCK IMPACTS - Google Patents

Abstract

A rail test bench for dynamic track testing of materials and structures for shock impacts, including a rocket carriage with accelerating engines installed on it, characterized in that several test samples are simultaneously placed next to the carriage movement trajectory, and the carriage is equipped with the same number of throwing devices with thrown objects, the flight path of which is directed to the corresponding test samples subjected to impact from projectile objects.

Description

The utility model “Rail stand for dynamic track testing of materials and structures for impact” relates to test equipment and is intended for ground dynamic track tests of aircraft materials and structures for impact from fragments of gas turbine engines, tire fragments, birds, runway elements and other items.

A well-known stand for testing materials, protective devices and structural elements when exposed to high-energy fragments of gas turbine engines, containing a rocket carriage with acceleration engines and a propelling device mounted on it and a test object, motionlessly placed at a given point next to the path of the carriage. The throwing device mounted on the carriage on the rotary support provides the ejection of a gas turbine engine fragments into the test object when the carriage passes at a given speed of the object placement zone (see application for utility model No. 20111131402 dated July 28, 2011 with a positive decision dated September 12, 2011 .).

A disadvantage of the known stand is the impossibility of combining in one experiment the tests of several samples, including those that are different in mass and size parameters, functional purpose and conditions of impact.

The purpose of the proposed utility model is to provide the possibility of combining in one experiment the tests of several samples of materials or structures, including those of different dimensions and weight, functional purpose and impact conditions with a corresponding increase in the productivity of experimental work and a decrease in the cost of track tests.

This goal is achieved by the fact that on a rocket carriage, accelerated by rocket engines along rail guides, several throwing devices are simultaneously placed. Throwing devices can be of various types according to actuators and are equipped with various throwable objects by types and mass-dimensional characteristics.

The test samples are stationary at fixed points near the path of the carriage. At the same time, in one launch, using one unified rocket carriage with several throwing devices, it is possible to combine testing of several samples of materials or structures, including those with different dimensions and functional purpose, as well as modeling different impact conditions in orientation, speed , the impact zone and other parameters of the test samples and objects acting on them.

Figure 1 shows a design diagram of the proposed stand.

The rail stand contains a rocket carriage (1) mounted on rail guides (2), with rocket engines (3), throwing devices (4) on swivel bearings (5) and throwable objects (6), as well as test samples (7), motionlessly placed at predetermined points near the path of the carriage.

The stand works as follows.

Before starting, the test objects (for example, the fuselage compartment, the engine of the aircraft or the protective shield) (7) are placed at predetermined points of the rocket track next to the trajectory of the rocket carriage (1). Throwing devices (4) with propelled objects (fragments of gas turbine engines, tire fragments, birds, runway elements and other items) (6) are mounted on the rocket carriage (1) using rotary supports (5) with specified angles in horizontal and vertical planes for directional impact on the desired area of the corresponding test object. The rocket carriage (1) is accelerated by rocket engines (3) along the rail guides (2) of the rocket track. When the carriage (1) passes at a given speed of the zones of placement of the test samples (7), the throwing object (6) is ejected from the throwing device (4). The missile object (6) moves freely along the calculated ballistic trajectory until it collides with the corresponding test sample (7). The rocket carriage (1) moves along the rail guides (2) until it stops.

Thus, in one experiment, it is possible to combine tests of several samples of materials or structures, including those with different dimensions and functions, functional purpose, conditions and objects of impact, and, as a result, increase the productivity of experimental studies and reduce the cost of track tests.

Claims (1)

Rail stand for dynamic track testing of materials and structures for impact, including a rocket carriage with acceleration engines installed on it, characterized in that several test samples are simultaneously placed next to the carriage path, and the carriage is equipped with the same number of throwing devices with missile objects, the flight path of which is directed to the corresponding test samples subjected to impact from propelling objects.