Damped structure with internal lattice and vibration damper(s)

1 . An apparatus, comprising:

a structure including a first skin, a second skin and a cellular core connected to the first skin and the second skin;

the cellular core including a cantilevered damper and an internal cavity between the first skin and the second skin; and

the cantilevered damper projecting into the internal cavity, and the cantilevered damper including a plurality of damper masses and a plurality of damper arms interconnecting the plurality of damper masses together, the plurality of damper masses including a first damper mass and a second damper mass, the plurality of damper arms including a first damper arm and a second damper arm, the first damper mass connecting the first damper arm to the second damper arm, and the second damper arm connecting the first damper mass to the second damper mass;

wherein the first damper arm, the first damper mass, the second damper arm and the second damper mass are arranged sequentially along a first axis.

2 . The apparatus of claim 1 , wherein the cantilevered damper projects into the internal cavity along the first axis to an unsupported distal end of the cantilevered damper.

3 . The apparatus of claim 1 , wherein

the plurality of damper masses further include a third damper mass;

the plurality of damper arms further include a third damper arm; and

the third damper arm is between the second damper mass and the third damper mass along the first axis.

4 . The apparatus of claim 1 , wherein

the cellular core is between the first skin and the second skin along a second axis that is angularly offset from the first axis;

the plurality of damper masses further include a third damper mass;

the plurality of damper arms further include a third damper arm; and

the third damper arm is between the second damper mass and the third damper mass along the second axis.

5 . The apparatus of claim 1 , wherein

the cellular core is between the first skin and the second skin along a second axis that is angularly offset from the first axis;

the plurality of damper masses further include a third damper mass;

the plurality of damper arms further include a third damper arm; and

the third damper arm is between the second damper mass and the third damper mass along a third axis that is angularly offset from the first axis and the second axis.

6 . An apparatus, comprising:

a structure including a first skin, a second skin and a cellular core connected to the first skin and the second skin;

the cellular core including a cantilevered damper and an internal cavity between the first skin and the second skin; and

the cantilevered damper projecting into the internal cavity, and the cantilevered damper including a plurality of damper masses and a plurality of damper arms interconnecting the plurality of damper masses together, the plurality of damper masses including a first damper mass and a second damper mass, the plurality of damper arms including a first damper arm and a second damper arm, the first damper mass connecting the first damper arm to the second damper arm, and the second damper arm connecting the first damper mass to the second damper mass;

wherein the first damper mass is between the first damper arm and the second damper arm along a first axis; and

wherein the second damper arm is between the first damper mass and the second damper mass along a second axis that is angularly offset from the first axis.

7 . The apparatus of claim 6 , wherein the cellular core is between the first skin and the second skin along the second axis.

8 . The apparatus of claim 6 , wherein the cellular core is between the first skin and the second skin along a third axis is angularly offset from the first axis and the second axis.

9 . The apparatus of claim 1 , wherein the first damper mass has an internal volume that is fluidly coupled with a perforation in the first skin.

10 . The apparatus of claim 9 , wherein the first damper arm has an internal bore that is between and fluidly couples the internal volume to the perforation in the first skin.

11 . The apparatus of claim 1 , wherein the internal cavity is fluidly coupled with one or more perforations in the first skin.

12 . The apparatus of claim 1 , wherein

the cellular core further includes a lattice structure that at least partially forms the internal cavity between the first skin and the second skin; and

the cantilevered damper is connected to and projects out from a base of the lattice structure into the internal cavity.

13 . The apparatus of claim 12 , wherein the lattice structure includes a plurality of base masses and a plurality of base arms interconnecting the plurality of base masses together.

14 . The apparatus of claim 13 , wherein a first of the plurality of base masses has an internal volume that is fluidly coupled with a perforation through the first skin.

15 . The apparatus of claim 6 , wherein the first damper mass has an internal volume that is fluidly coupled with a perforation in the first skin.

16 . The apparatus of claim 15 , wherein the first damper arm has an internal bore that is between and fluidly couples the internal volume to the perforation in the first skin.

17 . The apparatus of claim 6 , wherein the internal cavity is fluidly coupled with one or more perforations in the first skin.

18 . The apparatus of claim 6 , wherein

the cellular core further includes a lattice structure that at least partially forms the internal cavity between the first skin and the second skin; and

the cantilevered damper is connected to and projects out from a base of the lattice structure into the internal cavity.

19 . The apparatus of claim 18 , wherein the lattice structure includes a plurality of base masses and a plurality of base arms interconnecting the plurality of base masses together.

20 . The apparatus of claim 19 , wherein a first of the plurality of base masses has an internal volume that is fluidly coupled with a perforation through the first skin.