Fan case liner for a gas turbine engine with improved foreign bo

Details Fan case liner for a gas turbine engine with improved foreign bo Fan case liner for a gas turbine engine with improved foreign bo

1991-02-25

1992-11-03

Look, Edward K.

Rotary kinetic fluid motors or pumps

Including destructible, fusible, or deformable non-reusable...

415119, 29458, 298892, 156276, 156292, 428117, F01D 2100

Patent

active

051602482

ABSTRACT:
A fan case liner for a gas turbine engine includes a foreign body impact resistant area and a sound suppression area. The foreign body impact resistant area includes a face sheet of a high impact resistant material which substantially resists denting when struck by a foreign body. A first honeycombed layer of aluminum or an aluminum alloy is disposed over and attached to the face sheet. The first layer has a selected compressive strength to distribute loading forces caused by the impact of a foreign body and to resist plastic deformation. The hexagonally shaped voids in the honeycombed structure of the first layer are filled with a microballoon/resin filler material to further improve resistance to damage or denting. At least one second honeycombed layer of a aluminum or an aluminum alloy is disposed over and attached to the first honeycombed layer. The at least one second layer has a compressive strength greater than the first layer to further distribute forces caused by the impact of a foreign body and to further resist denting or plastic deformation of the fan case liner. A backsheet may be disposed over and attached to the second honeycombed layer.

REFERENCES:
patent: 3948346 (1976-04-01), Schindler
patent: 4534698 (1985-08-01), Tomich
Rolls-Royce, RB 211-535 E4 Fan Case Lining, Jun. 11, 1986, p. 5, Figure 2.6.

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