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Aeroacoustics, Vibroacoustics, and Overpressure Page

Tutorials ROCKET AEROACOUSTICS Rocket Vehicle Liftoff Acoustics, Part I: Acoustic Pressure near Nozzle Exit Plane: liftoff.pdf Rocket Vehicle Liftoff Acoustics, Part III: Acoustic Attenuation: lift_att.pdf Prediction of Sound Pressure Levels on Rocket Vehicles During Ascent: flow.pdf NASA SP-8072, Acoustic Loads Generated by the Propulsion System: SP8072.pdf NASA KSC-12061 Computer Program Predicts Rocket Noise: NK12061.pdf NASA Preferred Reliability Practices: Acoustic Noise Requirement: 1259.pdf Allred, Predicting Launch Acoustic Environments: predict_la.pdf See also: Rocket Vehicle Vibration JET AEROACOUSTICS Aircraft Noise (slide presentation): turbine_noise.pdf Antoine, Aircraft Noise Overview(slide presentation): aircraft_noise.pdf Lighthill's Eighth Power Law for Jet Noise: Lighthill.pdf VIBROACOUSTICS, PANELS & PLATES Radiation & Driving Point Impedance of a Thin, Isotropic Plate: dp_impedance.pdf Vibration Response of a Panel to an Acoustic Pressure Field: ac_panel.pdf C. Mei, Prediction of Response of Aircraft Panels Subjected to Acoustic and Thermal Loads: aircraft_panel_response.pdf Calculated and Measured Stresses in Simple Panels Subject to Intense Random Acoustic Loading including the Near Noise Field of a Turbojet, NACA Report 1367: panels_acoustic_loading.pdf Plate Point Mobility: plate_mobility.pdf Matlab script:  plate_mobility.m Hambric, Structural Acoustics Part 1: structural_acoustics_part1.pdf VIBROACOUSTICS, CYLINDRICAL SHELLS Vibration Response of a Cylindrical Skin to Acoustic Pressure via the Franken Method: Franken.pdf Vibroacoustic Response of a Cylinder: cylinder_vibroacoustic.pdf PAYLOAD FAIRING & BLANKETS Payload Acoustic Attenuation via Blankets: blankets.pdf Jaoen, Renault, Deverge, Elastic and Damping Characterizations of Acoustical Porous Materials: Available Experimental Methods and Applications to a Melamine Foam: JRD08_preprint.pdf Jerry Manning, Fairing Noise Reduction for Directive Acoustic Fields, 22-Manning_J.pdf PAYLOAD ACOUSTICS - Testing Joe Hackel, Prediction and Test Comparison of the NEXTSat Spacecraft Random Vibration Responses Due to Acoustic Testing: 07-Hackel_Ball.pdf Gordon Maahs, Acoustic Test and Analysis Heliospheric Imager on STEREO: 07-Maahs_JHUAPL.pdf Michael O’Connell, Direct Field and Reverberant Chamber Acoustic Test Comparisons: 07-O-Connell_JPL.pdf Mike Van Dyke, Toward Development of Standard Practices in Direct Field Acoustic Testing:  07-VanDyke_Aerospace.pdf J.A. Cockburn, Evaluation of Acoustic Testing Techniques for Spacecraft Systems, NASA CR 122450: acoustic_testing_spacecraft.pdf Schiffer and Hyde, Mariner Mars 1964 Acoustically Induced Vibration Environment: Mariner_acoustics.pdf PAYLOAD ACOUSTICS - Fill Factors Y.A. Lee, Acoustic Fill Factors for a 120-inch Diameter Fairing, NASA CR 189284: acoustic_fill_factors.pdf Matlab Scripts, Fill factor for a payload fairing: fill_factor.m octaves.m VIBROACOUSTICS, OTHER TOPICS Vibroacoustic Critical and Coincidence Frequencies of Structures: critical_frequency.pdf Hughes and McNelis, Recent Advances in Vibroacoustics: recent.pdf Vibration, Shock, Acoustics (Large File: 19.5 mb):  VSA.pdf Yantek, Estimated Sound Power Radiated by Surfaces on a Continuous Miner Tail Section Using Vibration Measurements: esprscm.pdf NASA, Combination Methods for Deriving Structural Design Loads Considering Vibro-Acoustic, etc., Responses: combining_VA.pdf See also: Statistical Energy Analysis SONIC BOOMS & OVERPRESSURE Sonic Booms, USAF Fact Sheet 96-03: SBFact.pdf FAA Sonic Boom Noise and Overpressure: sonicnoise.pdf Joseph E. Cates & B. Sturtevant, Seismic detection of sonic booms: seismicboom.pdf Predicting Launch Vehicle and Plume Sonic Boom using PCBoom3, Kenneth J. Plotkin, Wyle Laboratories: PCBoom3.pdf News Item: Navy Jets Cause Sonic Boom over Tampa. Registers as magnitude 2.7 quake: Tampa_sonic.pdf Study Notes on Overpressure & Sonic Booms: overpressure_notes.pdf EFFECT OF A ROCKET LAUNCH ENVIRONMENT ON GROUND EQUIPMENT Sonic and Vibration Environments for Ground Facilities - A Design Manual, Prepared for NASA by Wyle Laboratories: sonic_ground.pdf Atmospheric Sound Propagation from a Monopole Source via Direct, Reflected, and Surface Waves: direct_reflected.pdf Acoustic to Seismic Coupling: acoustic_seismic_coupling.pdf Matlab Scripts Adjustment of SPL for ambient temperature and pressure: SPL_change_ambient.m Atmospheric Absorption: atmosphere_absorption.m Spherical propagation from a point source through the atmosphere with both direct and ground reflected waves: direct_reflected.m faddeeva.m progressbar.m INFRASOUND McLaughlin, et al, Infrasound Detection of Rocket Launches: rocket_infrasound.pdf TESTING NASA-STD-7001 Payload Vibroacoustic Test Criteria: NASA7001.pdf NASA-STD-7002 Payload Test Requirements: NASA7002.pdf NASA-STD-5002 Load Analysis of Spacecraft and Payloads: NASA5002.pdf NASA Vibroacoustic Qualification Testing of Payloads, Subsystems and Components: NASA_VA_testing.pdf NASA TM-86538, Design and Verification Guidelines for Vibroacoustic and Transient Environments: NASA_vibroacoustic_transient.pdf Acoustic and Random Vibration Test Tailoring for Low-Cost Missions John C. Forgrave, Kin F. Man, and James M. Newell: acouvib.pdf Scharton, Vibration and Acoustic Testing of Spacecraft: jpl2.pdf See also: Force Limited Testing

Software	Executable	Source
Liftoff Acoustics of Rocket Vehicle.	liftoff.exe	liftoff.cpp Rocket_Motor_Values.pdf
Liftoff Undeflected, Hybrid Methods 1 & 2	liftoff_h_undeflected.exe	liftoff_h_undeflected.cpp
Liftoff, Hybrid Methods 1 & 2	liftoff_hyrbrid.exe	liftoff_hybrid.cpp
Acoustic Pressure Field surrounding Rocket Vehicle during Ascent.	flow.exe	flow.cpp
	flowtable.exe	flowtable.cpp
Ring frequency for a cylindrical structure.	Windows: ring.exe DOS:  ring_mode.exe	ring_mode.cpp
Franken method for a cylindrical structure subjected to a sound pressure field.	Franken.exe	Franken.cpp
Frequency, Wavelength, Wavenumber, Wave Speed, c=(f )(lambda), Calculator	frequency_wavelength.exe	-