RU2593921C1 - Apparatus for thermal testing of aircraft structural elements - Google Patents

Abstract

FIELD: test equipment.

SUBSTANCE: invention relates to apparatus for thermal testing of aircraft structures. Apparatus includes fans, electric air heaters, a heat chamber, collectors of gaseous heat carrier, temperature sensors, an automatic control system, a system for evacuation of waste heat carrier. It is equipped with two independent circuits of supplying heat carrier, located on side of upper and lower surface of tested structure, each having valves necessary for controlling supply of heat carrier. Casing is made in form of a volumetric panel, on one side of which there is a collector for gaseous heat carrier, other opposite side is made in form of a perforated plate, which enables to obtain a uniform temperature field on structure, wherein gate valves are installed over openings on panel, required to control flow rate of supplied gaseous heat carrier, which include gates, rods, guides with retainers, rod catchers.

EFFECT: broader functional capabilities.

1 cl, 3 dwg

Description

The invention relates to the field of testing equipment, in particular to installations for thermal testing of aircraft structures.

Known chambers for climate tests and installations for heating structures, containing fans, electric air heaters, heat chambers, temperature sensors, an automatic control system, devices for evacuating waste heat carrier (patents RU 1056143, RU 2183883).

The disadvantage of such climate chambers and installations is that they have limited functional capabilities for modeling various temperature fields when testing aircraft.

The closest in technical essence to the present invention and taken as a prototype is a device for thermal testing of aircraft, containing a manifold for supplying a gaseous coolant to a heat exchange surface, a casing made in the form of a round cylinder, a fan with movable blades, rotary nozzles (copyright certificate SU 1805311 A1 )

The disadvantage of this device is the complex design.

When creating the invention, the task was to expand the functionality of the installation.

The solution to this problem is achieved by the fact that the installation for heating the structure is equipped with two independent supply circuits of the gaseous coolant located on the upper and lower surfaces of the tested structure, each of which contains valves necessary for regulating the air supply, volumetric panels, on the one hand, are supplied to them a gaseous coolant collector, the other opposite side is made in the form of a perforated plate, which allows to obtain a uniform temperature field on the design, the bulk on the panel over the openings installed valves required for regulating the feed flow of gaseous coolant, they include vanes, rods, rails with clamps, restrictors rod displacement.

The invention is illustrated by drawings which depict:

in FIG. 1 - installation diagram for heating structural elements;

in FIG. 2 - plates with gate valves;

in FIG. 3 is a view A in FIG. 2.

The installation for heating the structure contains fans 1, electric heaters 2, valves 3, a gaseous coolant supply manifold 4, volumetric panels 5 with perforated plates 6, valves 7, which include a gate 8, a stem 9, guides 10 with a latch 11, and travel stops gate 12, temperature sensors 13, automatic control system 14, tested design 15, heat chamber 16, device for evacuating waste coolant 17.

Installation for heating the structure works as follows. From the fans 1, the coolant is supplied through electric heaters 2, adjustable valves 3 and the supply manifold 4 to the volumetric panels 5. Passing through the hole in the plates 6, the coolant heats the structure 15. The area of the holes in the plates 6 is controlled by valves 7 (Fig. 2). The gate 8 partially or completely opens the holes in the plates, this allows you to adjust the flow rate of the coolant entering the structure 15 (Fig. 3). On the rod 9 of the valve 7 there are travel stops 12. On the guides 10 a latch 11 is installed, which allows you to fix the required position of the gate 8. Using the adjustable valves 3 and valves 7, you can reproduce various temperature fields on the tested design. Temperature sensors 13 are necessary for recording temperature fields. They also provide feedback on a given test program. The heating process is controlled by an automatic control system 4. Evacuation of waste heat carrier is carried out by the system.

Claims (1)

Installation for thermal testing of structural elements of aircraft, containing fans, electric heaters, a heat chamber, gaseous coolant collectors, temperature sensors, an automatic control system, an evacuated waste fluid evacuation system, characterized in that it is equipped with two separate gaseous coolant supply circuits located on the upper side and the lower surfaces of the tested structure, each of which contains the valves necessary for adjustments heat supply, volumetric panels, on one side a gaseous coolant collector is supplied to them, the other, opposite side is made in the form of a perforated plate, which allows to obtain a uniform temperature field on the structure, while valves are installed on the volumetric panel above the openings necessary for controlling the flow of the supplied gaseous coolant, they include gates, rods, guides with clamps, limiters for the movement of the rod.

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