Accession Number:

AD0649067

Title:

NOISE CHARACTERISTICS OF A FRICTIONAL FOUR-WAY SERVO VALVE.

Descriptive Note:

Research and Development rept.,

Corporate Author:

NAVY MARINE ENGINEERING LAB ANNAPOLIS MD

Personal Author(s):

• Wright,Robert A.

Report Date:

1967-02-01

Pagination or Media Count:

37.0

Abstract:

A four-way, hydraulic, servo valve was evaluated for structureborne noise. It utilized the frictional throttling method developed by MEL. The highest broad-band noise level was 89 acceleration decibels with 37 gallons per minute of 140 Fahrenheit Type 2190-TEP, hydraulic fluid, flowing through the valve at a 1000 pound per square inch pressure drop. Under similar conditions, it was 30 acceleration decibels quieter than a conventional, orificial-type servo valve. Author

Descriptors:

• (*SERVOMECHANISMS
• NOISE)
• HYDRAULIC VALVES
• VIBRATION
• PERFORMANCE(ENGINEERING)

Subject Categories:

• Hydraulic and Pneumatic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE