Drop test device and method for carrying out a drop test

Patent metadata

Field	Value
Publication number	US-9540120-B2
Application number	US-201414465885-A
Country	US
Kind code	B2
Filing date	Aug 22, 2014
Priority date	Aug 26, 2013
Publication date	Jan 10, 2017
Grant date	Jan 10, 2017

Abstract

A drop test device includes a suspension frame, a delay roller which is placed and mounted on the suspension frame, and at least one suspension cable, a first end of which is connected in a stationary manner to an attachment point on the outer surface of the delay roller and a second end of which includes a mounting which can be releasably or fixedly connected to a drop object.

First claim

The invention claimed is:

1. A drop test device, comprising:
a suspension frame;
a delay roller placed and mounted on the suspension frame; and
two or more suspension cables of which a first end in each case is connected in a stationary manner to a corresponding attachment point on the outer surface of the delay roller and a second end in each case comprises a mounting configured to be fixedly or releasably connected to a drop object.

2. The drop test device according to claim 1 , further comprising:
at least one deflection roller attached to the suspension frame,
the two or more suspension cables being deflected via the deflection roller.

3. The drop test device according to claim 1 , wherein the two or more suspension cables are rolled up at least in part on the delay roller and are configured to be unrolled from the delay roller during a drop test.

4. The drop test device according to claim 1 , wherein the mountings comprise a hook, one end of which is connected to the corresponding suspension cable and the other end of which comprises a latch device, which is configured to latch into a protruding element of the drop object and block the drop object in the falling direction.

5. The drop test device according to claim 1 , wherein the delay roller comprises a projection at the attachment point, the two or more suspension cables each comprising a connection eye or protruding element on the first ends, the connection eyes being pulled via the projection.

6. The drop test device according to claim 5 , wherein the projection is attached to the delay roller in such a way that during the drop test the connection eye releases from the projection after the corresponding suspension cable unrolls.

7. A method for carrying out a drop test, comprising:
attaching a first end of two or more suspension cables in each case in a stationary manner to the outer surface of a delay roller placed on a suspension frame and blocked in rotation;
rolling up the two or more suspension cables at least in part on the delay roller;
attaching a second end of the two or more suspension cables, the second ends each comprises a mounting, to a drop object; and
releasing the blocking of the delay roller, in such a way that the two or more suspension cables unroll under the weight of the drop object on the delay roller.

8. The method according to claim 7 , wherein the two or more suspension cables are deflected via at least one deflection roller, attached to the suspension frame, during the fall of the drop object.

9. The method according to claim 7 , wherein the mountings each comprise a hook, one end of which is connected to the corresponding suspension cable and the other end of which comprises a latch device; and
wherein the latch device is latched onto a protruding element of the drop object when the corresponding suspension cable is attached to the drop object, and blocks the drop object in the falling direction.

10. The method according to claim 7 , wherein the delay roller comprises a projection, and wherein the two or more suspension cables each comprise a connection eye or protruding element at the first end, which is pulled via the projection when the first end of the corresponding suspension cable is attached to the delay roller.

11. The method according to claim 10 , wherein the projection is attached to the delay roller in such a way that in a drop test the connection eye is released from the projection after the corresponding suspension cable unrolls.

Assignees

• Airbus Operations Gmbh

Inventors

• Van Der Bos Roelant

Classifications

• G01N2203/04

  Chucks, fixtures, jaws, holders or anvils · CPC title

• G01N2203/0033

  Weight · CPC title

• B64F5/0045 Primary

  Operations & Transport · mapped topic

• G01N3/303 Primary

  generated only by free-falling weight · CPC title

• B64F5/60 Primary

  Testing or inspecting aircraft components or systems · CPC title