A whole shoe structure suitable for flight test platform

Abstract

This invention discloses an integral skid structure suitable for a flight test platform, including a front skid assembly and a rear skid assembly. The front skid assembly is bolted to the front cabin of the test platform, and a locating pin prevents the bolts from being sheared during the platform's taxiing. The rear skid assembly is bolted to the rear cabin of the test platform, and a flanged design limits the platform's position. The front skid assembly includes a front skid, a front pad, a front locating pin, and a front bolt assembly; the rear skid assembly includes a rear skid, a rear pad, a rear locating pin, and a rear bolt assembly. This invention ensures the smooth implementation of flight test platform experiments and provides reliable technical support for flight platform testing.

Description

Technical Field

[0001] This invention belongs to the field of testing technology, specifically relating to an integral skid structure suitable for flight test platforms. Background Technology

[0002] The test flight platform is a flight test platform that uses an engine as its power source and launches along a track. The test process is as follows: the test platform is powered by the engine and slides along the launch arm through a skid structure to reach the predetermined target and complete the test mission.

[0003] Skids are a crucial component and primary load-bearing part of a flight test platform. Their function is to control and limit the vertical displacement and overturning of the test platform along the launch arm, preventing the platform from derailing. Therefore, the design of skids in a flight test platform needs to consider factors such as compatibility, structural strength, the spacing between the front and rear skids, and the impact of the skids on the aerodynamic characteristics of the test platform. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention provides an integral skid structure suitable for flight test platforms, including a front skid assembly and a rear skid assembly. The front skid assembly is bolted to the front cabin of the test platform, and a locating pin prevents the bolts from being sheared during taxiing. The rear skid assembly is bolted to the rear cabin of the test platform, and a flange is designed to limit the movement of the test platform. The front skid assembly includes a front skid, a front pad, a front locating pin, and a front bolt assembly; the rear skid assembly includes a rear skid, a rear pad, a rear locating pin, and a rear bolt assembly. This invention ensures the smooth implementation of flight test platform experiments and provides reliable technical support for flight platform testing.

[0005] The technical solution adopted by this invention to solve its technical problem includes the following steps:

[0006] An integral skid structure suitable for a flight test platform includes a front skid assembly and a front skid component;

[0007] The front skid shoe assembly is bolted to the front section of the test platform, and the bolts are prevented from being sheared during the platform's sliding by a locating pin; the rear skid shoe assembly is bolted to the rear section of the test platform, and the test platform is limited by a designed flange.

[0008] The front skid shoe assembly includes a front skid shoe, a front pad, a front positioning pin, and a front bolt assembly; the inner surface of the front skid shoe and the inner surface of the pad are designed as concentric arc surfaces, and a flange is machined on the lower surface of the front skid shoe to increase the contact area with the track, and two positioning holes are designed to match the pad; positioning holes are set on the pad; the support legs of the front skid shoe are designed with a guide angle to reduce aerodynamic drag;

[0009] The rear skid shoe assembly includes a rear skid shoe, a rear pad, a rear locating pin, and a rear bolt assembly; the rear end face of the rear skid shoe is designed with a flange to limit the heading of the test platform; the windward side of the support leg of the rear skid shoe is designed with a guide angle and a guide arc surface to reduce the aerodynamic drag of the test platform during flight.

[0010] Preferably, the front and rear slippers are designed with through holes for bolt connection.

[0011] Preferably, the lower surfaces of the front and rear skids are parallel to the axis of the test platform.

[0012] The beneficial effects of this invention are as follows:

[0013] 1. The advantages of this invention are that the overall sliding shoe structure is easy to disassemble, the sliding shoe support leg is designed with a guide angle to reduce the aerodynamic drag generated on the windward side of the sliding shoe, and will not affect the aerodynamic layout of the platform. In addition, the positioning pin and pad improve the smoothness of the contact between the lower surface of the front and rear sliding shoes and the guide rail, reduce the vibration level of the test platform during launch, thereby protecting the sliding shoe body and eliminating the occurrence of bolt shearing, ensuring that the test platform can pass smoothly through the track without jamming or damage.

[0014] 2. The advantages of this invention are that it can meet the requirements of different test mechanical environments by adjusting the position and radius of the slipper itself without changing the main body of the slipper, according to different test needs and different test platform sizes. This increases the repeatability of the test platform, reduces the design cycle, saves design costs, and greatly improves test efficiency.

[0015] 3. The advantages of this invention are that by designing the front and rear sliding shoe ground flanges to increase the contact area between the sliding shoe and the track, the stability of the test platform during launch is increased. The rear sliding shoe, by designing the flange, limits the heading during the erection process of the test platform, reduces the shearing effect on the bolts, and ensures the perfect conduct of the test. Attached Figure Description

[0016] Figure 1 This is an overall view of the front skid shoe assembly of the present invention and the front skid shoe assembly installed on the cabin structure.

[0017] Figure 2 This is an overall view of the rear skid shoe assembly of the present invention and the rear skid shoe assembly installed on the cabin structure.

[0018] Figure 3 This is a schematic diagram of the application scheme of the present invention on a flight platform test platform.

[0019] In the diagram: 1-Forward section; 2-Forward skid shoe; 3-Forward pad; 4-Forward locating pin; 5-Forward bolt assembly; 6-Aft section; 7-Rear skid shoe; 8-Rear pad; 9-Rear locating pin; 10-Rear bolt assembly; 11-Head cone compartment; 12-Control compartment; 13-First stage engine section; 14-Interstage section; 15-Second stage engine section. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] This invention addresses the connection problem between current flight test platforms and launch arms by designing a detachable skid structure adapted for flight test platforms. The skid consists of two parts: a front skid and a rear skid. The front skid is bolted to the front compartment of the test platform, and locating pins prevent shear damage to the bolts during platform taxiing. The rear skid is bolted to the rear compartment of the test platform, and a flanged design limits the platform's position after erection. An optimized aerodynamic shape and guide angle reduce the skid's aerodynamic drag. Figure 1 and Figure 2 As shown, the left side is a schematic diagram of the installation of the front and rear skids on the cabin structure, and the small diagram on the right is a structural diagram of the front and rear skids.

[0022] Both the front and rear skids are connected to the test platform by bolts, reducing manufacturing difficulty. The front skid assembly consists of the front skid, front pad, front locating pin, and front bolt assembly. The rear skid assembly consists of the rear skid, rear pad, rear locating pin, and rear bolt assembly.

[0023] The inner surface of the front slipper and the inner surface of the front pad are designed as concentric arc surfaces. An appropriate flange is machined on the lower surface of the front slipper to increase the contact area with the track, and two positioning holes are designed to match the front pad. The front pad is designed with an appropriate thickness to fit the test platform and the upper surface of the slipper, and positioning holes are also designed within it.

[0024] The front skid support leg is designed with an appropriate thickness and a guide angle to reduce aerodynamic drag.

[0025] The upper surfaces of the front and rear skids have appropriate size and thickness, and an appropriate number of through holes are designed on the skids for bolt connections.

[0026] The front and rear sliding shoes are machined to an appropriate height to ensure that the lower surfaces of the front and rear sliding shoes are parallel to the axis of the test platform.

[0027] The rear skid shoe's rear end face is designed with an appropriately high flange to limit the test platform's heading. The rear skid shoe's support legs are designed with appropriate thickness, and guide angles and guide arc surfaces are designed for the windward side of the support legs to reduce aerodynamic drag during the test platform's flight.

[0028] The appropriate length and quantity mentioned above can be specifically designed based on calculations of the mechanical environment of the flight test platform.

[0029] Example:

[0030] The test platform's integral skid is an important component that works in conjunction with the launch arm track during flight testing. Its function is to control and limit the vertical displacement of the test platform along the track side, so that the test platform does not detach from the skid during launch operations.

[0031] like Figure 3 As shown in the embodiment of the integral skid structure for the flight test platform of the present invention, it is a flight test platform divided into a front section and a rear section. A front skid is installed under the front section, and a rear skid is installed under the rear section. Each integral skid is made of high-strength steel. Both the front and rear skids are connected to the test platform by bolts. The lower surface of both the front and rear skids is 500mm from the center of the missile axis. The width of the front skid is 100mm, and the width of the rear skid is 200mm. The application of this invention ensures the smooth implementation of flight test platform tests and provides reliable technical support for flight platform testing.

Claims

1. An integral shoe structure suitable for use in a flight test platform, characterized by, Includes a front skid shoe assembly and a rear skid shoe assembly; The front skid shoe assembly is bolted to the front compartment of the test platform, and the bolts are prevented from being sheared during the platform's sliding by a locating pin; the rear skid shoe assembly is bolted to the rear compartment of the test platform, and the test platform is limited by a designed flange. The front skid shoe assembly includes a front skid shoe, a front pad, a front positioning pin, and a front bolt assembly; the inner surface of the front skid shoe and the inner surface of the front pad are designed as concentric arc surfaces, and a flange is machined on the lower surface of the front skid shoe to increase the contact area with the track, and two positioning holes are designed to match the front pad; positioning holes are set on the front pad; the support legs of the front skid shoe are designed with a guide angle to reduce aerodynamic drag; The rear skid shoe assembly includes a rear skid shoe, a rear pad, a rear locating pin, and a rear bolt assembly; the rear end face of the rear skid shoe is designed with a flange to limit the heading of the test platform; the windward side of the support leg of the rear skid shoe is designed with a guide angle and a guide arc surface to reduce the aerodynamic drag of the test platform during flight.

2. The integral shoe structure for a flight test platform of claim 1, wherein, The front and rear slippers are designed with through holes for bolt connection.

3. The integral shoe structure for a flight test platform of claim 1, wherein, The lower surfaces of the front and rear skids are parallel to the axis of the test platform.

Images