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US 2017/0370381 A1Published application
Inlet tube design
AssigneeHamilton Sundstrand Corporation
InventorsMilan Lucic, John M. Beck, Paul E. Hamel, Robert Telakowski
Life of this patent
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Abstract
A ram air fan assembly includes an outer housing. An inner housing is located within the outer housing. A motor is attached to the inner housing. An inlet tube extends between the outer housing and the motor. The inlet tube includes a straight first portion and a curved second portion. At least one of the two portions includes a perforated portion.
Claims13
A method of filtration for use in a ram air fan assembly, the method comprising:
- perforating a portion of an inlet tube with a plurality of perforations;
- fluidly connecting a fan case with a motor with the inlet tube;
- drawing an air flow through the inlet tube;
- and
- spreading a suction force of the air flow across the perforated portion and a first end of the inlet tube.
2 more elements
A method of cooling, the method comprising:
- drawing an air flow through a portion of an inlet tube of a ram air fan assembly, wherein the ram air fan assembly comprises:
- an outer housing;
- an inner housing located within the outer housing;
- and
- a motor attached to the inner housing, wherein the inlet tube defines a portion of a flowpath leading to a downstream end of the inner housing and such that the inlet tube is fluidly connected to a downstream end of the motor, wherein the inlet tube comprises:
- an inlet;
- at least a straight first portion;
- and
- a curved second portion, wherein the straight first portion and the curved second portion comprise a perforated portion with uniformly spaced perforations, wherein the perforated portion is fluidly connected to air within the outer housing;
- spreading a suction force of the air flow across the perforated portion and a first end of the inlet tube.
7 more elements
Dependencies are inferred from the claim text.