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Gas Turbine Jet Exhaust Noise Prediction
- Aerospace Standard
- ARP876F
- Reaffirmed
Downloadable datasets available
Annotation ability available
Sector:
Issuing Committee:
Language:
English
Scope
ARP876 is intended to provide specific recommended procedures for the prediction of gas turbine jet exhaust system noise sources. Procedures are issued as separate sections, to allow for future updating as additional methods, consistent with state-of-the-art, become available.
Rationale
Revision F corrects an error in Equation 9 for the single stream shock-associated noise prediction method, and corrects an error in Table 14 for the mixed component Z4 term of the subsonic coaxial jet mixing noise prediction method.
Recommended Content
Aerospace Standard | Gas Turbine Coaxial Exhaust Flow Noise Prediction |
Aerospace Standard | Inlet Total-Pressure-Distortion Considerations for Gas-Turbine Engines |
Technical Paper | Design of an Industrial Gas Turbine Intake-A Critical Item |
Topic
Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 | ||
TABLE 1 | VARIABLE DENSITY INDEX ω (REFERENCE ) | |
TABLE 2 | PURE JET MIXING NOISE NORMALIZED POLAR OASPL (DB) VALUES (REFERENCE ) | |
TABLE 3 | ADJUSTMENT FACTOR FOR NORMALIZED FREQUENCY | |
TABLE 4 | GAS TURBINE JET EXHAUST NOISE PREDICTION θ ANGLE TO INTAKE ≤ 90 DEGREES | |
TABLE 5 | GAS TURBINE JET EXHAUST NOISE PREDICTION θ ANGLE TO INTAKE = 100 DEGREES | |
TABLE 6 | GAS TURBINE JET EXHAUST NOISE PREDICTION θ ANGLE TO INTAKE = 110 DEGREES | |
TABLE 7 | GAS TURBINE JET EXHAUST NOISE PREDICTION θ ANGLE TO INTAKE = 120 DEGREES | |
TABLE 8 | GAS TURBINE JET EXHAUST NOISE PREDICTION θ ANGLE TO INTAKE = 130 DEGREES | |
TABLE 9A | GAS TURBINE JET EXHAUST NOISE PREDICTION θ ANGLE TO INTAKE = 140 DEGREES | |
TABLE 9B | GAS TURBINE JET EXHAUST NOISE PREDICTION θ ANGLE TO INTAKE = 140 DEGREES | |
TABLE 10A | GAS TURBINE JET EXHAUST NOISE PREDICTION θ ANGLE TO INTAKE = 150 DEGREES | |
TABLE 10B | GAS TURBINE JET EXHAUST NOISE PREDICTION θ ANGLE TO INTAKE = 150 DEGREES | |
TABLE 11B | GAS TURBINE JET EXHAUST NOISE PREDICTION θ ANGLE TO INTAKE = 160 DEGREES | |
TABLE 12A | RELATIVE VELOCITY EXPONENT M(θ )V | |
TABLE 12B | RELATIVE VELOCITY EXPONENT M(θ ) | |
TABLE 13 | MASTER SPECTRA H (σ) AND C (σ) | |
TABLE 14 | JET NOISE COMPONENT FORMULAS | |
TABLE 15 | NORMAL ADJUSTMENT (DSPL) | |
TABLE 16 | ACOUSTIC EXCITATION ADJUSTMENT (EX) | |
TABLE 17 | SPECTRUM SHAPE FACTOR FOR COMBUSTOR NOISE | |
TABLE 18 | FARFIELD DIRECTIVITY INDEX FOR COMBUSTOR NOISE | |
TABLE A1 | MEASURED AND CALCULATED WIDEBAND SOUND POWER LEVELS FROM SINGLE-STREAM JETS UNDER STATIC CONDITIONS |
Issuing Committee
A-21 Aircraft Noise Measurement Aviation Emission Modeling
To develop and maintain relevancy of recommended practices for aircraft noise measurement and guidance for modeling of both aircraft noise and aviation emissions and to promote a unified technical approach to support the practical assessment of their impact.
Reference
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