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SAE AIR1935 - Methods of Controlling Distortion of Inlet Airflow During Static Acoustical Tests of Turbofan Engines and Fan Rigs
December 1, 2020 - SAE

This Aerospace Information Report provides guidelines for hardware design. Guidelines on such items as engine types, test arrangements, and test purposes that would benefit from the use of an inflow control device during static noise testing are outside the scope of this report.

ISUZU ISC-C92-006 - Performance Requirements of Interior Plastic Parts
December 1, 2020 - ISUZU

This standard specifies the quality requirements for the plastic parts used in the interior of automobiles (parts). This standard does not apply if product specifications, drawing instructions and consent agreements specify the vehicle durability, crashworthiness, human-engineering performance,...

SMD 5962-17237 - MICROCIRCUIT, BiCMOS, RADIATION HARDENED, ULTRA LOW NOISE, DUAL LOOP CLOCK JITTER CLEANER, MONOLITHIC SILICON
December 15, 2020 - DOD

Scope. This drawing documents two product assurance class levels consisting of high reliability (device class Q) and space application (device class V). A choice of case outlines and lead finishes are available and are reflected in the Part or Identifying Number (PIN). When available, a choice of...

ASTM 04.06 - Thermal Insulation; Building 04.06and Environmental Acoustics
November 1, 2020 - ASTM

Abstract: Volume 04.06 features specifications that establish the property requirements for various types of insulation, including blanket, block, board, loose fill, and pipe. Standards on environmental acoustics address community noise, acoustical materials and systems, mechanical and...

ISO 717-1 - Acoustics — Rating of sound insulation in buildings and of building elements — Part 1: Airborne sound insulation
December 1, 2020 - ISO

This document a) defines single-number quantities for airborne sound insulation in buildings and of building elements such as walls, floors, doors, and windows, b) takes into consideration the different sound level spectra of various noise sources such as noise sources inside a...

DS/ISO 11691 - Acoustics – Measurement of insertion loss of ducted silencers without flow – Laboratory survey method
November 30, 2020 - DS

This document specifies a laboratory substitution method to determine the insertion loss without flow of ducted, mainly absorbent, circular and rectangular silencers, as well as other duct elements for use in ventilating and air-conditioning systems. NOTE - Laboratory measurement procedures for...

DS/EN ISO 11691 - Acoustics – Measurement of insertion loss of ducted silencers without flow – Laboratory survey method (ISO 11691:2020)
November 30, 2020 - DS

This document specifies a laboratory substitution method to determine the insertion loss without flow of ducted, mainly absorbent, circular and rectangular silencers, as well as other duct elements for use in ventilating and air-conditioning systems. NOTE - Laboratory measurement procedures for...

SAE AIR1081 - House Noise-Reduction Measurements for Use in Studies of Aircraft Flyover Noise
December 1, 2020 - SAE
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