UNCLASSIFIED 



SECURITY CLASSIFICATION OF THIS PAGE (When Data Entered) 



REPORT DOCUMENTATION PAGE 



READ INSTRUCTIONS 

 BEFORE COMPLETING FORM 



I. REPORT NUMBER 



NSWC/WOL TR 76-15 5 



2. GOVT ACCESSION NO 



3. RECIPIENT'S CATALOG NUMBER 



4. TITLE (and Subtitle) 



Dynamical Model for Explosion Injury to 

 Fish 



5. TYPE OF REPORT & PERIOD COVERED 



Final 



6. PERFORMING ORG. REPORT NUMBER 



7. AUTHORfsJ 



John F. Goertner 



8. CONTRACT OR GRANT NUMBERfl.) 



9. PERFORMING ORGANIZATION NAME AND ADDRESS 



Naval Surface Weapons Center 



White Oak, Silver Spring, Maryland 20910 



10. PROGRAM ELEMENT, PROJECT, TASK 

 AREA & WORK UNIT NUMBERS 



63721N; S0400; S040001; 

 CR14CA501 



It. CONTROLLING OFFICE NAME AND ADDRESS 



12. REPORT DATE 



18 December 1978 



t3. NUMBER OF PAGES 



137 



14. MONITORING AGENCY NAME ft ADDRESSf// different from Controlling Office) 



tS. SECURITY CLASS, (ol thle report) 



UNCLASSIFIED 



15«. DECLASSIFI CATION/ DOWN GRADING 

 SCHEDULE 



16. DISTRIBUTION STATEMENT (of this Report) 



Approved for public release, distribution unlimited, 



17. DISTRIBUTION STATEMENT (of the abstract entered In Block 20, It different from Report) 



18. SUPPLEMENTARY NOTES 



19. KEY WORDS (Continue on reverae aide if neceaamry and Identity by block number) 



Underwater Explosions 

 Swim Bladder Fish 

 Fish-kill 

 Explosion Effects 



Cavitation 

 Sound Ranging 

 Lethal Ranges 



20. ABSTRACT (Continue on reverae aide It neceaamry end Identity by block number) 



A new method is given for calculating kill probability for 

 bladder fish subjected to the rapidly varying pressure field of 

 an underwater explosion. The method consists of an approximate 

 calculation for the extreme values of compression and extension 

 of the fishes' gas-filled swim bladder in response to the 

 explosion pressure wave. The calculations are made for the damped 

 radial oscillations of a spherical air bubble in water. The kill 

 | probability is then calculated as an experimentally (Cent) 



DD | JAN 73 1473 EDITION OF I NOV 65 IS OBSOLETE 



S/N 102-014- 6601 



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SECURITY CLASSIFICATION OF THIS PAGE (When Dmta Entered) 



