RU122175U1 - STAND FOR TESTS OF MATERIALS, PROTECTIVE DEVICES AND STRUCTURAL ELEMENTS UNDER THE INFLUENCE OF HIGH-ENERGY FRAGMENTS OF GAS-TURBINE ENGINES - Google Patents

Abstract

A stand for testing materials, protective devices and structural elements when exposed to high-energy debris of gas turbine engines, including a rocket carriage with a throwing device on a rotary support, a thrown fragment of a gas turbine engine and a test object, motionlessly placed next to the trajectory of the carriage, characterized in that the throwing device is made in the form of two guide posts, between which a pyro-pusher is fixed and a projectile fragment is placed with the possibility of its movement along the guide posts; the rod of the pyro pusher from the side opposite to the direction of throwing rests against the debris being thrown, which is fixed in the guide posts by means of a pin, which is destroyed under the action of forces from the pyro pusher.

Description

The utility model “Test bench for testing materials, protective devices and structural elements when exposed to high-energy debris from gas turbine engines” refers to a test technique for ground track dynamic testing of materials, protective devices and structural elements for emergency impacts from high-energy debris from a destroyed gas turbine engine.

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 is mounted on the carriage with the help of a rotary support, made in the form of a barrel with a spring, a piston, a removable debris tray fixed through the piston rod, a spring compression device in the form of a rod with a clamp and provides the release of a gas turbine engine fragment into the test object during passage a carriage at a given speed of the object’s location 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 limitation on the speed of throwing the debris and large overall-mass characteristics of the throwing device associated with the use of a spring mechanism and a barrel for the debris.

The purpose of the proposed utility model is to expand the capabilities of the bench for the speed of throwing a fragment, as well as reducing the overall mass characteristics of the propelling device, and as a result, reducing the aerodynamic drag of the carriage and optimizing the mode of its movement during dynamic track tests.

This goal is achieved by the fact that on a rocket carriage, accelerated along the rail guiding rocket engines, a fragment of a gas turbine engine is installed in the propelling device, and the test object is motionlessly placed at a given point near the path of the carriage. The throwing device, which ensures the release of the debris into the test object when the carriage passes at a predetermined speed of the object placement zone, is mounted on the carriage by means of a rotary support and is made in the form of two guide racks, between which a pyro-pusher is fixed and a throwable chip is placed with the possibility of its movement along the guides. The pusher rod, from the side opposite to the throwing direction, abuts against the missile chip, which is fixed in the guides by means of a pin, which is destroyed by the forces from the pusher. This design of the throwing device allows you to increase the throwing speed of the debris and reduce the overall mass characteristics of the throwing device, which accordingly will ensure a decrease in the aerodynamic drag of the carriage and optimization of its movement mode during dynamic track tests.

Figure 1 shows a design diagram of the proposed stand.

Figure 2 shows a design diagram of a propelling device.

The stand contains a rocket carriage (1) mounted on rail guides (2), with rocket engines (3), a propelling device (4) and a fragment of a gas turbine engine (5), as well as a test object (6) (for example, an aircraft fuselage compartment ), motionlessly placed at a given point next to the path of the carriage. The throwing device is mounted on the carriage with the help of a swivel support (7). The throwing device (4) is made in the form of two guide racks (8), between which a pusher (9) is fixed and a throwing chip (5) is movable along the guides. The rod (10) of the pusher (9) from the side opposite to the throwing direction abuts against the missile chip (5), which is fixed in the guides by means of a pin (11), which is destroyed under the action of forces from the pusher (9).

The device operates as follows.

Before starting, the test object (6) is placed at a given point on the rocket track next to the trajectory of the rocket carriage (1). The throwing device (4) with the debris (5) is mounted on the rocket carriage (1) with the help of the rotary support (7) with the given angles in the horizontal and vertical planes for the directed impact on the required site of the 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 predetermined speed of the zone of placement of the test object (6), the pyro-pusher (9) of the throwing device (4) is activated. The pressure of the gases generated as a result of the operation of the pusher (9) is transmitted by the rod (10) to the chip (5). Under the action of forces from the pyro-pusher (9), the pin (11) that secures the chip (5) is cut off in the throwing device with the further movement of the chip along the guides of the throwing device (4). After moving the rod (10) of the pusher (9) by the stroke, the chip (5) moves freely along the ballistic trajectory until it collides with the test object (6), and the carriage (1) moves along the rail guides (2) until it stops.

Claims (1)

A test bench for testing materials, protective devices and structural elements when exposed to high-energy fragments of gas turbine engines, including a rocket carriage with a propelling device on a rotary support, a missile fragment of a gas turbine engine and a test object motionlessly placed next to the path of the carriage, characterized in that the propelling device is made in the form of two guide racks, between which a pyro-pusher is fixed and a missile chip is placed with the possibility of its movement along apravlyayuschih racks; the pusher rod from the side opposite to the throwing direction abuts against the missile chip, which is fixed in the guide racks by means of a pin, which is destroyed under the action of forces from the pusher.