PATENT CLAIM ANALYSIS

Application Number: 16056101
Application Type: Utility
Filing Date: 2018-08
Publication Date: 2018-12
Patent Classification: ["060", "805000"]

Abstract:
Methods and apparatus are provided for an axi-centrifugal compressor in a gas turbine engine for a business aviation or rotorcraft propulsion unit. The compressor includes an axial compressor section operable to affect a first pressure ratio along the flow path between a compressor inlet and a first section exit, and a centrifugal compressor section operable to affect a second pressure ratio along the flow path between a second section inlet and the compressor exit. The pressure rise across the axial and centrifugal compressor section is configured to have a tuning factor is in a range between 2.8 and 4.5 and a loading factor in a range between 0.6 and 0.8.

Claim (Index 1):
A method for operating a compressor along a flow path in a gas turbine propulsion system comprising:\n drawing a fluid along the flow path through a first inlet; compressing the fluid along the flow path in an axial compressor section having a least one axial stage downstream from the first inlet to a first exit in the axial compressor section such that:\n PR ax =PE 1 /PI 1  \n PR/stage ax=(PE 1 /PI 1 ) 1/n  \n where:\n PI 1  is the pressure at the first inlet, \n PE 1  is the pressure at the first exit, and \n n is the number of axial stages; \n communicating the fluid from the first exit into a second inlet along the flow path; compressing the fluid along the flow path in a centrifugal compressor downstream from the second inlet to a second outlet of the centrifugal compressor section such that:\n PR c =PE 2 /PI 2  \n where: PI 2  is the pressure at the second inlet, and PE 2  is the pressure at the second exit; wherein the fluid is compressed according to the following conditions:\n 2.8<PR ax /PR c <4.5 \n 0.6<(PR/stage ax)/(PR c )<0.8.

Metadata:
- Claim Count in Document: 11.0
- Percentile: 96.0
- Lexical Diversity: 2.11111
- Patent Class: 60.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15163990', '12404573', '13716875', '13325034', '15379935']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7101623296125376
- 35 USC 102 Novelty (BERT): 0.4767976692288652
- Combined Prediction Score: 0.6868258635741704
- Mean Citation Score: 181.296454
- Max Citation Score: 194.13034
- Similarity Product: 132.28002046327234

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test