L.p. Compressors Parts

(Page 5) End item NSN parts page 5 of 64
Part Number
NSN
NIIN
003224EB O-ring
006413407
003224EE O-ring
006413407
003228 O-ring
001651946
0032944 Shim
005976041
0032944-1 Shim
005976041
00354V003 Pipe To Tube Straight Adapter
009003296
0038.0046.T Terminal Board
005189611
00384549 Pipe To Tube Elbow
006401051
004-003005-024 Lock Washer
009338778
004-003005-026 Lock Washer
009370453
004-003005-053 Lock Washer
005825965
004-003005-054 Lock Washer
004079566
004-003005-056 Lock Washer
002090965
004-003081-032 Flat Washer
001670801
004-003081-048 Flat Washer
005157449
004011EE O-ring
001660975
004012EB O-ring
010463300
004014EB O-ring
005841840
0040398 Headless Straight Pin
000141346
0040896 Gasket
005510433
Page: 5 ...

L.p. Compressors

Picture of L.p. Compressors

Jet engines and other gas turbine engines are often uprated by adding a zero-stage, sometimes written '0' stage,

At a given core size, adding a stage to the front of the compressor not only increases the cycle overall pressure ratio, but increases the core mass flow. A further uprating may be done by adding another stage in front of the previously-added zero stage, in which case the new one may be known as a zero-zero stage.

A comparison with other ways of uprating an existing engine without drastically redesigning the engine shows for a particular case, eg the Rolls-Royce/SNECMA M45H, the thrust could have been increased by 25% with a zero-staged l-p compressor or 10% with either an improved HP turbine or with water injection.

Zero-staging is also combined with other modifications to provide increased thrust or lower turbine temperature. It may be required for an existing aircraft weight increase, or for a new application, as shown by the following examples.

A 15-stage Rolls-Royce Avon powered the Lightning F.1. A zero-stage, together with a new turbine, was added (total 16 stages) for the Caravelle III. A zero-zero stage was added (total 17 stages) for the Caravelle VI.

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