The Effect on Blade Erosion of Injecting Air Ahead of a Cavitating Propeller.

reportActive / Technical Report | Accession Number: ADA089318 | Open PDF

Abstract:

Experiments are described in which air was injected ahead of a propeller operating at a cavitating condition in a nonuniform wake to determine the effect of air on blade cavitation erosion. Experiments were conducted with no air injected and with air injected at different locations ahead of the propeller for two air flow rates. The experimental technique and data collection method are described. The results show that the injection of air ahead of a cavitating propeller significantly reduces the amount of blade erosion. The amount of erosion was found to be dependent on the location and the amount of air injection. Author

Author(s):
Dahmer, Douglas ; Miller, Marlin
Author Organization(s):
DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA MD SHIP PERFORMANCE DEPT
Descriptive Note:
Final rept.,
Pagination:
0042

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
DTNSRDC/SPD-0915-01
Task Number(s):
ZR0230101
Project Number(s):
ZR00001
 Subject Terms
Joint Capability Areas:
JCA_3.2_Engagement; JCA_3_Force Application; JCA_3.2.1_Kinetic Means; JCA_1.2.7_Experimentation; JCA_4_Logistics; JCA_1.3_Human Capital Management; JCA_1_Force Support
Modernization Areas:
Microelectronics
Communities of Interest:
Ground and Sea Platforms
Descriptor(s):
*AIR FLOW, *EROSION, *MARINE PROPELLERS, *PROPELLER BLADES, *CAVITATION, INJECTION, AIR
Field(s)/Group(s):
Marine Engineering, Fluid Mechanics
Keyword(s):
PE61152N, WU1544323
Report Date:
1980 Mar 01