US 2018/0023576 A1 · TWIN CENTRIFUGAL SINGLE SPOOL ENGINE

Abstract

An auxiliary power unit may comprise a twin centrifugal compressor including a first blade. A turbine may be disposed aft of the twin centrifugal compressor. The turbine may include a second blade. The first blade comprises a first material and the second blade comprises a second material. The first material may the same as the second material. The twin centrifugal compressor may include forward centrifugal compressor and an aft centrifugal compressor disposed aft of the forward centrifugal compressor.

Claims20

Dependent claims

A twin centrifugal compressor for an auxiliary power unit, comprising:

a first airflow path at an input of the twin centrifugal compressor;
and
a second airflow path and a third airflow path defined by the twin centrifugal compressor, wherein the second airflow path and the third airflow path are split from the first airflow path.

Dependencies are inferred from the claim text.

Facts

Application

15/218,915Filed 25 Jul 2016

Published

25 Jan 2018

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

B64D 41/00
Power installations for auxiliary purposes
F04D 17/105
For compressing or evacuating: with double suction
F02C 3/08
Having a turbine driving a compressor: the compressor comprising at least one radial stage
F02C 3/145
Characterised by the arrangement of the combustion chamber in the plant: the combustion chamber being in the reverse flow-type

Twin centrifugal single spool engine

Life of this patent

Twin centrifugal single spool engine

Life of this patent

Abstract

Claims20