AIR1419: INLET TOTAL-PRESSURE-DISTORTION CONSIDERATIONS FOR GAS-TURBINE ENGINES

Features

Issuing Committee: S-16 Turbine Engine Inlet Flow Distortion Committee

Scope

Content: No Scope available

Rationale

Content

Equation 2.12 may be expressed for the full AIP or a tip or hub region at the AIP in the form:

(2.32) Δ PRS = Δ PRS C + b Δ PRS R

Introducing circumferential and radial distortion parameters, DPC and DPR, for pure patterns

(2.33) Δ PRS C = K C ( DPC )

(2.34) Δ PRS R = K R ( DPR )

The terms K_C and K_R are empirically established circumferential and radial compressor sensitivities and are independent of the pattern. Then, for a combined distortion pattern

(2.35) Δ PRS = K C ( DPC ) + bK R ( DPR )

which may be written

(2.36) Δ PRS = K C [ ( DPC ) + B ( DPR ) ]

where

B = bK R K C

The term B is a specified function of corrected flow and is independent of the pattern. Equation 2.36 may be used to define a screening parameter:

(2.37) DPS = ( DPC ) + B ( DPR )

For pure circumferential distortion DPR = 0
For pure radial distortion DPC = 0, b = 1.0

Meta Tags

Topics: Engine control systems
Engine components
Wind tunnel tests
Environmental testing
Turbofan engines
Thrust reversers
Hypersonic and supersonic aircraft
Commercial aircraft
Gas turbines
Jet engines

Details

DOI: https://doi.org/10.4271/AIR1419

Pages: 274

Citation: SAE International Information Report, INLET TOTAL-PRESSURE-DISTORTION CONSIDERATIONS FOR GAS-TURBINE ENGINES, SAE Standard AIR1419, Issued May 1983, https://doi.org/10.4271/AIR1419.

Additional Details