# US 2009/0260449 A1 · Device for test loading

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- Number: US 2009/0260449 A1
- Document ID: US20090260449A1
- Status: Published application
- Kind: A1
- Application number: 12/427,099
- Filed: 2009-04-21
- Published: 2009-10-22
- Earliest claimed: 2008-04-21
- Assignees: Airbus Deutschland GmbH
- Inventors: Rolf Hinrichs; Christian Goepel; Uwe Matschl; Stephan Christiansen
- Web page: https://patentgrep.com/patent/US20090260449A1

## CPC

- G01M 5/0075: {by means of external apparatus, e.g. test benches or portable test systems (G01M5/005 takes precedence)}
- G01M 5/0041: {by determining deflection or stress}
- G01M: TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR

## Abstract

The present invention provides a device for test loading a fuselage barrel, in particular in the aviation and aerospace industry. The device comprises a first and a second pressure bulkhead for sealing the fuselage barrel at the end faces thereof in a pressure-tight manner. The device further comprises a support device which may be coupled to the first pressure bulkhead, on the one hand, and to the second pressure bulkhead, on the other hand, extending through the fuselage barrel. Moreover, the device comprises a loading device which may be coupled to the support device, on the one hand, and to a portion of the fuselage barrel, on the other hand, for introducing loads into the fuselage barrel. The resulting advantage is that gravitational force and/or acceleration forces acting on the masses arranged in the fuselage barrel, for example cargo, in particular during the flight phase may be simulated by means of components which are exclusively arranged within the fuselage barrel, which is pressurised during the test. Thus a provision of through-holes in the fuselage skin for passing through hydraulic cylinders and the sealing of said holes relative to the fuselage skin, as in the device known to the applicant, are avoided.

## Claims

### Claim 1

Device for test loading a fuselage barrel in the aviation and aerospace industry, comprising:
a first and second pressure bulkhead for sealing the fuselage barrel at the end faces thereof in a pressure-tight manner;
a support device which may be coupled to the first pressure bulkhead, on the one hand, and to the second pressure bulkhead, on the other hand, extending through the fuselage barrel; and
a loading device which may be coupled to the support device, on the one hand, and to a portion of the fuselage barrel, on the other hand, for introducing loads into the fuselage barrel.

### Claim 2 (depends on 1)

Device according to claim 1, wherein the support device may be coupled by means of a fixed bearing to the first pressure bulkhead and by means of a loose bearing to the second pressure bulkhead.

### Claim 3 (depends on 1)

Device according to claim 1, wherein the support device comprises a first beam, a second beam and struts coupling said beams.

### Claim 4 (depends on 3)

Device according to claim 3, wherein the first beam, the second beam and the struts form a framework.

### Claim 5 (depends on 3)

Device according to claim 3, wherein the loading device comprises at least one adjusting member for acting on the first beam and a lower deck of the fuselage barrel and at least one adjusting member for acting on the second beam and the upper deck, the first beam being able to be coupled to the pressure bulkheads.

### Claim 6 (depends on 5)

Device according to claim 5, wherein the loading device comprises at least one load distribution means which connects the at least one adjusting member to the upper or lower deck, the load distribution means comprising a ramified structure.

### Claim 7 (depends on 1)

Device according to claim 1, wherein a retaining device is provided which keeps the pressure bulkheads movable relative to one another.

### Claim 8 (depends on 7)

Device according to claim 7, wherein the retaining device comprises a frame, into which one of the pressure bulkheads is fixedly clamped, and at least one adjusting means which is coupled to the frame and the other respective pressure bulkhead.