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SECUAITY CLASSIFICATION OF THIS PAGE (When Date Entered) wah | Ve #i / JS, fis 4 sees 
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REPORT DOCUMENTATION PAGE eee ae READ INSTRUCTIONS : 
[). REPORT NUMBER ~~ 12. GOVT ACCESSION re 3. RECIPIENT'S CATALOG NUMBER 
NOSC Technical Report 579 (TR 579)" AID ~ A O92 =) i$ cL 
; so Ra eI ea Sokal PE GF eee & PERIOGO COVERED 
eG | NONRESONANT ACOUSTIC PROJECTOR, PROJECT. ame } Final FeCq Lb ——— 7| 
+ Mechanical 5- 59 Hz device > provides s stable underwater gcoustic output | 1 May §979.%0 36 Aprita £980) | 
| with frequency and amplitude conbellabie and pind penen of depth. 6. iPERFORMING ORG, REPORT NUMBER 
6. CONTRACT OAR GRANT NUMBER(a) 
| (ae ; OT 
It " HA|Wilcox | [uy ! GA; Gul Ss j 
; a sues tm 
; pe a aaee eae L 
3 PROGRAM ELEME SN EC OrE eT TASK 
AREA & WORK UNIT NUMBER 
62766N, F61512, 
od §12 001 (NOSC 530 ZD51); 
62711N. ZE-11-12 1-0 NI cI 
eee co 
5 DD Junssio8o/ j 
, 9. PERFORMING ORGANIZATION NAME- ANNO ADDR ES 
Naval Ocean Systems Center 
San Diego, CA 92152 
255 
eae Poe 1 ep opie PS 
LE) JCMS Ae Lp 12 Sunesto8 
SHMUMBER OF PAGES 
iadsie 2) a) 50 
if 14. MONE ORING AGENGY-HAME © ADORESS(if different {rom Controlfing Office) 1S. SECURITY CLASS. (of thfa report) 
Unclassified 
BDECL ASSIFICATION/ DOWNGRADING 
SCHEDULE 
16. DISTRIBUTION STATEMENT (of thle Report) 
Approved for public release; distribution unlimited 
17. DISTRIBUTION STATEMENT (of the sbeiract entered In Block 20, If differsat from Regert} 
18. SUPPLEMENTARY NOTES 
19. KEY WORDS (Continue on reverse aide if nececoary end tdantify by block number) 
f Underwater sound generators Mechanical components 
| «= Sources Linkages 
Standards: Nonresonant Acoustic Projector 
20. ABSTRACT (Continue on severae alde tf necessary and identify by Slock number) 
{> The nonresonant acoustic projector was designed, fabricated, and tested without significant difficulties, It 
met all its specifications, and it proved the principle of a mechanical projector whose operating depth, frequency, 
and amplitude of piston throw can be simultaneously or independently vmied without incurring significant inter- 
actions among the variables. The validity of considering the nonresonant acoustic projector as a standard source 
was demonstrated. 
y. 
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DD (FORM 1473 Evitiow OF 1 NOV 6S Is OBSOLETE 
S/N 0102-LF-014-6601 
UNCLASSIFIED 
SECURITY CIASSIFICATION OF THIS PAGE (Whon ee 
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