Attachment_13-_Propeller,_Fairwater_&_Guards_75F-WLR_245_3_1_-_2.pdf

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PROPEll£.R CH ARAC TE.RI STICS

£._AC H BLADE

H UB

EACH BLADE

1--1 U B

TOTA"L

\/OLU ME

I 74 .7 5 c. u. 11-J.

s.ao CU. IN.

Wf.16HT( 13A5t:.D

49. 5G LBS.

194.49 Lf35.

4q/.BS LBS.

POLAR MOMfi-.J/ Ot=' lt-.!E._RTIA I 70, 20 CU. IN-Sq.FT.

t,,S. 5 3 CU. 11-J - SO FT.

01-J .490 LE, PER CL!. FT:)

48-2.7 LB-SQ.FT.

18. 58 LB- SQ.l='T.

~oa. 20 LB - SQ. !=T.

TOTAL BLADE AREA 9. ~4 SQ. FT. ( E )( PANoi;;:o A REA RATIO • 835)

S E C T t 0 N C. ~l A. p, A CT ER I ST I C. S P.. 'O:, R E Qu IRE D I ~ A 13 S P. U LE AT .'2 5 p., i& A 5 =- 14.04 SQ JN. 5 !!:::,I 0 ~ '2..3~9 C.U IN-lN ~ 6 W :: I I , 65 IN T :: I. t,, ~ ! /....I

Uf :: o.755 1N.

4,& C5"' .714- CN =.095

PROP

t-JO. 0 F BLADE 5 P rrc H A I 0. 2 5 R

AT O,"'(P,

1 ~ E .( P VJ I 0T1-l AT 0. 2 5 R £ x P A F?- EA R A Tl o

R,AKE

46" 5 0 3----

5l

11. 65 0.835

1. I 3

THICKNESS AT 0.25R REG?t.JllZ.E.D 1,342

~§."'-IERAL ~O_IE_5

I MATt.RIAL: A.S.TM.A 743 CORROSION - RE.SIS TAN; /~ON - Cl-IROMIUM-N ICl-'.EL STEEL, GRAD!;. C -3

2. I WDIVIDUAL PITCH DI: VIA.TIO~ AT l:.ACH DES- I C. 1-.J RAD I U $ 5 HALL e, E. PL U 5 0 R M 11..J US I P~RCEt-JT OF THE DE:S1G.1..J PITC.!-l Al TH AT R AD I US ..I t=:. ;< C ~ PT TH A I I H h 01 Ft='I: RE~CI: IN pi:_RC.ENTAC.-,G. PITCl-l

OEVIATIO"-J F"POM DE.S\61-J FOR TWO

ADJAC.£1'..IT DE..SIGl-...J RADII SHALL )...JOT t:=XCE.E.O 1/'l.. PE!<'.C.E-\...IT. ARITf-iMETIC AVGR-

AGE OF TH£: PERCEN'TA6E DEVIA..T101'JS

Sl--lALL NOT EXCEED PLUS OR MI NUS 3/4

PERCENT FOR ANY BLADE

3 BLAD£.. WIDll-l Al--10 T!-llC.Kt-JESS 51-/ALL BE A(CUfl.f\TE WITl-1/N A PLUS TOLE;.RA\JCE OF 'le" OR TINO PERC.Et...IT or:: THE RE.SPE.C.Ttvr;_ v I

TO.LEPANC~ FOR THAI Dll""E"-'SION.lJIH'-IVS:

TOLJ;.~ANC.E SHALL BE Y'l. THE. FLUS TOLERl\NCli'

4. THE DtAMEl"E.R SHA.LL BE ACCUR/>..TE Wl°l"\-11\...l A r-'LU5 TOLERAt-JCE. 01= ZERO A/...JO A 1-vllNUS TOL£f~ANC.E OF 0.5"

5. THE. C'£'"-JT£R5 OF PROPE..LLE:I< BLADES Sl{ALL BE G 0 DEG REES l".P.£\f;:T PL U5 0 R M INU5 15 f\1\11-JUTES OF CIRCULAR ARC.

h, THE BLADE C E.NTEP. AXIS OF A LL Bl.ADES SHALL TRAC.K AT 'THE BLADE'. llP WITHIN PLUS OP, MINUS !f41NCH.

7 .. Tf-JE. El<TE R,NAL SUl{FACES OF Tl-IE. PR_0P£U£R

(3LADE;S ANO HUBS 5HALL E:.£ (;,ROUND FAIR.

f. POLISH.E.0 i:o. A i;'-OU(;;oHN~SS OF MOT MOf<E THAN G.3 M!CR0-1"'-ICHES.

13·. Tl-4~ FA1RWATb.P, SHA..Ll SI;.. CAST FROM THG SAME:: MATE.RIAL AS SELE:CTEO FOfZ THE

PR OPE LL ER.

9. THE PROPELLER UNl3ALANC1': 51-lALL "-JOT E"XCEED Tl..fE VALUE DE::TER~INED13YTHE FOLLOWINC,, FORMULA: U ~ 4 Ooo VJ/ N.,_ w 1-1E RE : u~MAx ALLOwABLE Rt.s1ouAL

--------------------- W=- WEfGHT OP- ROTATrµc::; P,,,,R,_-~ IN pOUNDS.

N =-MAXIMUM OPERATfNG. R.P.M.

10. SEAL GLAND MATL. S\-if\LL \:,E AST t'\ 304 L

SIN. STE.€L.

I\. HUB TAPER FIT SHA\..l.. t3E C\-\ECKEt> 13Y BLUEING- ON A.CTUl'-.L M.A..T1NG SHA.FT

OR TA.PER MALE: G-AUG-E WHICH G-OES

WIT\-\ Tl-\E. VE.SSE:L.

lfE.v:i S~'T rF"sc-M DWG N.O .

. 1a\62. . . 245-003 I . l. !

REVISIONS

REV DATE APP VO DESCRIPTION BY

01!>,'.t

I '¥11/<10 ' · f)(PA~17£'t7 vJ1t711-1 1>.T o.zs~ WAS 1'2,'lo.

~."J'. 2., As. WA,5 14,40 SQ. JN.

3, W WAS IZ,20 llJ

4. Cs WAS • 71 (

5. Io WAS Z.4-~ Cu 1N-1t--1

2 10/q /~o R£Yl~Et> PER Gav '1. A.S 6-UILT J.S.

COM ME NI S.

REF ND !mAWING NO TITLE

REFERENCES

A Avondale A.s .o. Jos NO

BOAT DIVISION K - 8 I & K - 82

-4132 PETERS ·RO

HARVEY LA 70059

FSCM 1316:?

U.S. COAST GUARD

HEADOUARIERS WASHINGTON D.C. 20590

NAVAL ENGINEERING

CONTRACT NUMBER 75 I CUTTER CLASS II F,,

DACW66-88-C-0037

DRW:.A N DATE PROPELLER' FAIRWATER.

cf3J,;m.~ 8 ·5 88

~ 6UARDS (_(o BLADE)

~KEO

,'11-1 f-f-gt i--~-F-S-CM~-.-H-U-Ll~N-0~~~~~~~~ --------- .___---------1 (1) ~~v~~~MEN-T -~~~ -No 0 I 00- ~. 0 I O ~iv

APVD-GOVERNM~NT 75-WLR-F · 24 -003 ,,_,

rJ!. ~ 3/4-Jlfl SCALE 1/ 2.. SH NO I OF 4.

. -· \ 7'S'rwi:.rt.\.i.11s o3 o 1: DL.JC':;o

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