JPH04136545U - engine test equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To facilitate the work when investigating the effect on an engine of non-uniform air pressure when air is taken in. [Structure] The distortion screen 3, which has a net-like screen body and an opening where the screen body is not placed, is rotated by a drive device 11 via a pinion 12 and a ring gear 10, making it easy to operate the distortion screen 3. It can be rotated to Therefore, the angle of the opening and the screen body relative to the circumferential direction can be changed easily and quickly.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention solves the problem of uneven pressure (distribution) of air taken into an aircraft engine. engine used to investigate the effects of The present invention relates to test equipment.

0002

[Conventional technology]

When an aircraft makes a sharp turn or climbs rapidly, the air taken into the engine becomes biased. Because of the flow, the air pressure is not uniform at the engine inlet; Ru. Therefore, the effect of this uneven pressure (distortion) on the engine is It is necessary to conduct an investigation on the ground, and for this investigation conventional distortion A screen was used.

0003 That is, as shown in FIG. 2, a ring-shaped frame 1 and a semicircle arranged on the frame 1 A distortion screen 3 with a shaped screen body 2 is installed at the engine inlet. The air taken in from the outside is distributed between the frame body 1 and the screen body 2. is introduced into the engine through the opening 4 between and the mesh 5 of the screen body 2. . Then, observe the pressure and flow rate passing through the opening 4 and the mesh 5, as well as the condition of the engine. The effect on the engine when the introduced air pressure is non-uniform was investigated. It will be done.

0004

[Problem that the idea aims to solve]

When carrying out the above-mentioned investigation, the opening 4 and the screen for the engine inlet are Distortion screen 3 is used to perform tests by changing the circumferential angle of main body 2. must be rotated in the circumferential direction.

[0005] However, when changing the circumferential angle of the opening 4 and the screen body 2, In the past, the engine had to be stopped and the distortion screen was manually installed. Removing the bolts fixing the horn 3 and changing the angle of the distortion screen 3 , since bolts are installed, the work is complicated and distortion can occur. It is very labor intensive as it is necessary to stop the engine every time the angle of screen 3 is changed. The problem was that it was inefficient.

[0006] In view of this situation, the present invention was designed to improve the openings and screen of the distortion screen. The circumferential angle of the main body can be changed quickly, dramatically improving work efficiency. The purpose is to provide a test device for engines that can perform the following tasks.

[0007]

[Means to solve the problem]

In this invention, a net-like screen body and the screen body are arranged at the engine inlet. Distortion screens with unfilled openings are moved by the drive. It is arranged so that it can be rotated.

[0008]

[Effect]

The distortion screen is rotated by driving the drive device. , the circumferential angles of the opening and the screen body are changed.

[0009]

【Example】

Embodiments of the present invention will be described below based on the drawings.

0010 FIG. 1 shows an embodiment of the present invention.

[0011] In the figure, 6 is the engine, and 7 is the air intake provided at the engine inlet X of engine 6. The casing 7 has the same structure as that shown in FIG. A distortion screen 3 is housed.

0012 The frame 1 of the distortion screen 3 is provided with a cylindrical body 8 having approximately the same diameter as the frame 1. The ends of the cylindrical body 8 are connected, and the outer periphery of the cylindrical body 8 is connected to three or more pairs rotatably disposed within the casing 7. It is rotatably supported by the upper guide roller 9, and the rear end of the cylindrical body 8 has an external tooth type. A ring gear 10 is connected.

[0013] In the figure, 11 is a drive device equipped with a motor and a speed reducer, and the output of the drive device 11 is A pinion 12 that transmits driving force to the ring gear 10 is connected to the shaft.

[0014] The pressure of the air taken in by the distortion screen 3 mentioned above When investigating the effect of non-uniformity on the engine 6, the ring gear 10 is driven. Distortion is generated through the pinion 12, ring gear 10, and cylindrical body 8 by Rotate the screen 3 by the required angle with respect to the casing 7, and open it as shown in Figure 2. Change the angle of the mouth part 4 and the screen body 2 with respect to the casing 7 as necessary. do.

[0015] Therefore, it is necessary to change the angle of the distortion screen 3 in the circumferential direction. In addition, there is no need to stop the operation of the engine 6, which improves work efficiency. go up

[0016] In addition, in the engine test device of the present invention, the mesh of the screen body is shaped like a grid. Although we have explained the case where the hole is shaped like a long hole, it is also possible to use a long hole shape and other points of the present invention. Of course, various changes may be made within the scope of the invention.

[0017]

[Effect of the idea]

As explained above, according to the engine testing device of the present invention, the distortion The angle between the opening of the screen and the screen body in the circumferential direction is controlled by the drive device. This makes the work easier and eliminates the need to stop the engine. Since there is no need for this, it can have the excellent effect of dramatically improving work efficiency.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway side view of an engine testing device according to the present invention.

FIG. 2 is a front view of a distortion screen applied to the apparatus of FIG. 1;

[Explanation of symbols]

2 Screen body 3 Distortion screen 4 Opening 11 Drive device X Engine inlet (inlet)

Claims (1)

[Scope of utility model registration request] 1. An engine characterized in that a distortion screen having a net-like screen body and an opening where the screen body is not arranged is arranged at the engine inlet so as to be rotatable by a drive device. Test equipment.