Accession Number:

AD0257070

Title:

TEST OF LORD MANUFACTURING COMPANY 380 HP NOISE ISOLATION COUPLING

Descriptive Note:

Corporate Author:

NAVAL BOILER AND TURBINE LAB PHILADELPHIA PA

Personal Author(s):

Report Date:

1961-05-05

Pagination or Media Count:

1.0

Abstract:

A noise isolation drive coupling built by the Lord Manufacturing Company was tested under static and forced vibration conditions to evaluate stiffness and damping characteristics in torsion. With coupling size and torque capacity greater than tested heretofore, a unique test rig and method for determination of characteristics was devised which permit test up to 7200 cmin with static torque imposed on the coupling of 200,000 lb - inches. This test method appears practicable for larger sized couplings and is advantageous in permitting determination of dynamic stiffness and absolute coefficients of damping in torsion under test conditions encompassing the rotational frequency range normally encountered in naval main propulsion machinery. These data should assist the accurate prediction by mathematical analysis of torsional vibration behaviour and critical frequencies of isolation mounted main propulsion machinery systems. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE