Copyright
Cecil H. (Cecil Hobart) Peabody.

Propellers online

. (page 10 of 14)
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569


5 6 4


559


554


55


547


544


541


539


537


536


535


534




e


606


635


654


666


674


679


682


683


681


676


669


66 1


652


642


632


1.40


R


*55


164


J 74


183


192


202


212


221


231


242


2 53


264


276


290


35




D


568


560


553


548


543


538


534


530


527


524


521


5*9


5*7


516


5*5




e


603


636


658


671


678


684


683


682


679


675


670


664


656


647


636


1.50


R


145


T 54


163


172


181


190


199


209


219


229


239


250


262


275


289




D


554


547


540


533


528


523


5*9


5 J 5


512


59


506


54


502


5 01


500




e


594


630


654


670


679


683


683


681


678


673


667


660


652


643


633


1. 60


R


136


144


J 53


162


171


1 80


189


198


207


216


226


237


249


261


274




D


542


534


527


521


5*5


5 10


506


502


498


495


492


490


488


487


486




e


58o


617


643


659


669


675


677


676


673


669


663


656


648


639


630


1. 80


R


122


130


138


146


154


162


170


179


188


197


207


218


229


240


252




D


524


5 J 5


57


500


493


487


483


480


476


473


47


468


466


465


464




e


560


602


626


642


652


657


6 59


659


657


654


649


642


634


626


617


2.OO


R


no


118


126


134


142


149


J 57


165


173


182


191


2OI


212


223


234




D


57


498


489


481


474


468


463


459


456


453


45


448


447


446


445




e


548


59


615


630


638


642


644


643


641


637


632


626


618


610


601



120



TABLES



THREE-B LADED PROPELLERS.

PROJECTED AREA RATIO = 0.5 4. THICKNESS RATIO = 0.03.

Point off one place for D, two for R, three for e.



ll

&H


REAL SLIP.




0.06


0.08


O.IO


0.12


0.14


0.16


0.18


0.2O


0.22


0.24


0.26


0.28


0.30


0.32


0.34


0.60


R


342


354


368


382


397


413


429


446


465


484


504


525










D


796


790


784


779


775


772


769


766


764


763


762


762










e


482


487


491


495


499


502


54


5 06


57


5<>7


54


498








0.65


R


317


329


342


355


369


385


401


419


437


457


477


497


5*7


538






D


773


766


759


753


749


745


742


740


739


738


737


736


735


735






e


492


497


502


506


59


5 12


5*4


5^


5 J 7


5*7


5i5


512


506


.498




0.70


R


298


309


321


333


346


360


375


39 1


409


427


447


468


489


5 11


534




D


754


746


739


733


727


723


719


716


7*4


712


711


711


711


712


712




e


505


5"


5i6


520


523


525


527


528


528


527


525


522


5*7


5 10


500


-75


R


280


290


302


3*4


326


339


353


368


384


402


422


442


463


485


57




D


735


727


720


7*3


708


73


699


696


6 93


691


690


689


688


688


689




e


515


5 2 3


529


534


538


54i


542


543


542


540


537


533


528


520


5io


0.80


R


262


272


284


296


308


321


335


349


363


379


398


4i7


438


460


482




D


717


709


702


696


690


685


681


677


674


671


669


667


666


666


667




e


521


534


544


55i


555


557


558


559


558


556


553


548


54i


533


525


0.90


R


234


244


2 55


266


278


290


302


3i5


328


343


360


378


398


419


440




D


684


677


671


665


659


654


649


64;


641


638


635


633


632


631


630




e


525


55 1


569


58o


586


589


59


-59


589


587


583


578


57i


562


552


I.OO


R


209


219


230


241


252


263


274


286


298


312


328


345


363


383


403




D


653


646


639


633


628


623


619


616


613


610


607


604


602


600


600




e


5i5


548


578


598


610


616


619


620


620


618


613


606


597


586


574


I. 10


R


192


2OI


211


221


232


243


254


265


276


288


302


3i8


335


353


37i




D


628


621


614


608


602


597


593


59


53/


584


58i


579


577


575


573




e


512


547


580


6O2


617


627


634


638


639


638


635


628


618


607


596


1. 20


R


177


186


I 9 6


206


216


226


237


248


259


270


282


296


3 11


328


345




D


606


598


590


584


578


574


57


567


5 6 4


562


560


558


556


554


552




e


5*3


55 1


585


608


624


635


642


646


648


647


644


638


629


617


604


1.30


R


167


176


I8 5


194


204


214


224


234


244


254


266


278


292


37


323




D


587


579


57 1


54


558


553


549


54<3


543


54i


539


537


535


533


532




e


5i8


559


590


614


63^


642


648


650


651


649


645


640


632


622


611


1.40


R


157


166


X 75


184


193


203


213


223


233


243


253


264


276


290


305




D


57o


56i


553


546


540


535


53 1


527


524


522


520


518


5*7


5i6


5i5




e


5*3


557


589


6i3


630


641


647


650


649


647


643


638


631


622


611


1.50


R


*5


158


166


J 75


184


193


203


213


223


233


243


253


264


276


290




D


555


546


538


53 1


525


520


5*5


5 11


508


506


54


53


502


501


500




e


503


548


58o


604


622


634


641


644


644


641


637


632


626


618


608


1. 60


R


143


151


159


168


177


186


195


204


214


224


234


244


254


2 6 S


277




D


542


533


5 2 5


5i8


5*2


506


SOI


497


494


491


489


488


487


486


485




e


49


S3 2


563


592


612


624


631


635


636


635


631


627


620


613


602


1. 80


R


J 33


141


149


J 57


165


*74


183


192


2OI


2IO


220


230


240


250


260




D


5i8


59


5 01


494


488


482


477


473


470


468


466


464


463


462


462




g


458


5 01


S3 2


560


578


594


603


607


609


610


608


604


598


59


582


2.00


R


123


131


J 39


147


J 55


164


X 73


182


191


200


2IO


220


230


240


250




D


494


485


477


47


464


459


454


45i


448


446


445


444


444


444


444




e


413


455


486


5 10


530


546


558


566


57 1


574


575


573


5 6 9


563


555



TABLES



121



TWO-BLADED PROPELLERS.

PROJECTED AREA RATIO = O.l8. THICKNESS RATIO = O.o6.

Point off one place for D, two for R, three for e.



d

P


REAL SLIP.




0.06


0.08


O.IO


0.12


0.14


0.16


0.18


0.2O


O.22 0.24


0.26


0.28


o. 30 1 0.32


0-34


0.60


R


399


413


428


443


457


472


486


501


5 l6


532














D




73i


732


734


736


739


741


743


746


749














e


554


555


554


552


548


543


537




524


517












0-65


R


3 6 9


381


394


407


421


43 6


451


465


480


496


512












D


714


7*5


7i5


715


7 8i


717


719


721


723


726


729












e


574


581


583


583




580


576


572


577




556










0.70


R


342


353


365


377


39


404


418


434


45


466


484


502


521








D


697


697


697


698


698


699


700


702


704


706


708


712


716








e


596


600


603


605


604


602


599


596


592


588


583


578


572






o-75


R


3 ! 9


329


340


352


363


376


399


404


420


43 6


453


470


488


508






D


682


682


681


681


681


682


683


684


685


687


690


693


696


699






e


612


619


622


624


624


622


619


616


611


607


602


597


591


584




0.80


R


298


309


320


33


342


354


366


379


392


406


421


437


456


476


497




D


668


668


668


667


667


667


668


668


668


669


671


674


676


679


682




e


628


634


638


640


640


6 39


637


634


631


627 621


615


608


600


591


0.90


R


263


2 73


283


293


34


3*4


325


337


349


362 376


390


406


423


440




D


6 5 4


654


653


653


652


652


652


652


652


652 653


654


656


658


660




e


651


658


66 1


663


664


663


662


660


657


653 648


642


635


627


619


I.OO


R


236


245


254


263


273


284


295


306


317


328


34i


354


367


382


397




D


624


621


620


619


618


618


617


617


617


617 617


618


619


620


621




e


682


686


689


691


692


691


689


686


682


677


671


663


655


646


637


I. 10


R


216


222


230


239


248


258


268


279


290


301


313


325


338


352


366




D


605


604


603


602


601


600


598


597


597 5971 597


597


598




599




e


697


703


708


712


7 Z 3


712


709


704


699


6 93


686


679


671


662


651


1. 20


R


196


203


210


217


226


236


246


256


266


277


288


300


313


326


339




D


588


5 86


584


582


581


580


580


579


579


578 578


578


579








e


708


7 l6


722


726


728


726


7 2 5


721


716


709


700


691


682


672


66 1


1.30


R


182


188


I 9 4


2OI


209


217


226


236


246


256


267


279


291


3<>3


317




D


572


570


5 68


5 66


565


5 6 4


563


562


561


560


560


560


560


5 61


562




e


720


727


731


734


736


736


735


732


727


719


711


701


691


680


669


1.40


R


170


175


180


187


195


203


212


221


230


240


250


261


273


285


297




D


559


557


555


552


55


548


546


545


544


543


542


542


543


544


545




e


73 I


736


740


743


745


745


743


740


735


728


719


708


698


688


677


1-50


R


J 53


160


167


173


179


186


193


201


209


218


227


237


248


259


271




D


547


544




539


537


535


533


531


5 2 9


528


528


527


527


528






e


737


744


749


752


753


752


750


74 6


740


732


722


7*3


703


692


681


1. 60


R


146


!- 2


158


163


168


X 75


182


189


197


205


214


224


235


247


258




D


536


532


529


526


524


522


520


518




5*5


514


5*3


5*3


513






e


738


746


752


756


757


757


756


752


746


737


728


718


707


6 9 4


682


1. 80


R


130


135


141


147


153


159


166


173


181


189


198


207


216


226


236




D


5*5


5 11


57


54


5 01


498


496


494


492


49


489


488


487


487


488




e


728


738


746


752


756


757


756


752


745


736


725


714


73


692


681


2.OO


R


"5


120


126


132


138


*45


I 5 I


158


166


X 73


181


189


198


207


216




D


494


490


486


483


479


476


474


472


470


468


466


465


464


463


463




e


7P2


7 I8


729


737


742


745


744


742


738


73i


723


714


704


692


680



122



TABLES



AUXILIARY
R, revolutions; D, displacement,



















R


R$


Rl


S.H.P.


S.H.P. *


S.H.P.i


D


3


5


13-58


7.07


IO


1.468


1.779


700


78.84


55


14.46


7-42


15


-57


1.969


725


80.70


60


15-32


7-75


20


.648


2.118


750


82.55


65


16.16


8.06


25


.710


2.240


775


84-38


70


16.99


8.36


30


-763


2-341


800


86.18


75


17.79


8.66


35


.809


2.438


825


87-96


80


18.56


8-94


40


.850


2.520


850


89-73


85


!9-33


9.22


45


.887


2.590


875


91.48


90


20.08


9-49


50


.920


2.660


000


93-22


95


20.82


9-75


55


-951


2.725


925


94-93


IOO


21.54


IO.OO


60


.980


2.781


95


96.64


no


22.96


10.48


65


2.007


2.840


975


98.33


1 20


2 4-33


10 -95


70


2.030


2-895


1,000


IOO.OO


130


25.66


11.40


75


2.054


2-945


1,250


116.04


140


26.96


11.83


80


2.076


2.992


1,500


131-03


150


28.23


12.25


85


2.097


3-039


I J 75


145.22


160


29.47


12.65


90


2.117


3.080


2,000


158.74


170


30.69


i3-4


95


0.136


3.121


2,250


171.71


180


31.88


13-42


IOO


2-154


3-i6


2,500


184.20


IOO


33-05


13-78


I2 5


2-235


3-35


2,75


196.28


200


34-21


14.14


150


2-305


3-5


3,000


208.01


2IO


35-33


14.49


J 75


2.361


3-64


3> 2 5o


219.40


2 2O


3 6 -44


14.83


200


2.418


3-76


3,500


230.52


230


37-54


iS-V


225


2.466


3-88


3,750


241.40


24O


38-62


J 5-49


250


2.510


3-98


4,000


251.98


250


39-68


15.81


275


2-550


4-07


4,250


262.32


260


40.74


16.12


300


2-59


4.16


4,5o


272.56


270


41-78


16.43


325


2.62


4.24


4,75


282.53


280


42.80


16.73


350


2.66


4-33


5,000


292.40


290


43.81


I 7-3


375


2.68


4.40


5,250


302.06


300


44-8i


17.32


400


2.72


4-47


5,5oo


311-58


310


,45-8o


17.61


425


2-74


4-54


5,75


320.95


320


46.78


17.89


450


2.77


4.60


6,000


330-!9


33


47-75


18.17


475


2.79


4.66


6,250


339-3


34


48.71


18.44


500


2.82


4-74


6,500


348.29


35


49-66


18.71


525


2.84


4-80


6,75


357- 16


360


50.61


18.97


550


2.86


4-84


7,000


365-93


370


51-54


19.23


575


2.88


4.90


7,25


374.58


380


52.46


19.49


600


2.90


4-95


7,5oo


383-15


39


53-38


19-75


625


2.92


5-oo


7,75


391.62


400


54-29


20.00


650


2-94


5-05


8,000


400.00


410


55-J9


20.25


675


2.96


5- 10


8,250


408.28


420


56.08


20.49


700


2.98


5- J 5


8,500


416.49


43


56.97


20.73


725


3-oo


5- J 9


8,750


424.62


440


57-85


20.97


75


3-oi


5-24


9,000


432-67


45


58-72


21.21


775


3-03


5.28


9,250


440.64


460


59-59


21-45


800


3-05


5-32


9,5oo


448.54


470


60.45


21.68


825


3.06


5-36


9,750


456.39


480


61.30


21.91


850


3-o8


5-40


10,000


464.16


490


62.15


22.14


875


3-09


5-44


10,500


479-49



TABLES



123



PROPELLER TABLE.
S.H.P., shaft horse-power.



R


Rt


&


S.H.P.






D


Pi


S.H.P.i


S.H.P.i


500


62.99


22.36


900


3- 11


5-47


11,000


494.61


5io
520


63-83
64.66


22.58
22.80


9 2 5
95


3.12
3-!3


5-5 2

5-55


11,500

12,000


509.48
524-15


53


65-49


23.02


975


3-i4


5-59


12,500


538.6o


540


66.31


23.24


1,000


3-i6


5.62


13,000


552-88


55


67-13


23-45


i,5o


3-38


6.22


^,500


566.96


560


67-94


23.66


2,000


3-55


6.70


14,000


580.88


57


68.74


23-87


2,500


3-68


7.09


14,5


594-6i


580


69-54


24.08


3,000


3-8o


7.40


15,000


608.22


59


7 -34


24.29


3,50


3-9


7-69


15,5


621.66


600


7 I - I 3


24-49


4,000


3-98


7-95


l6,OOO


634-97


610


71.92


24.70


4,5


4-05


8.19


16,500


648.12


620


72.71


24.90


5,000


4-i3


8.40


17,000


661.15


630


73-49


25 .10


5,5oo


4.20


8.60


17,500


674-05


640


74.26


25-3


6,000


4-27


8.80


18,000


686.83


650


75 -3


25-5


6,500


4-32


8.98


18,500


699-49


660


75-8o


25.70


7,000


4-37


9-i5


I9,OOO


712.04


670


76.57


25-88


7,5oo


4.42


9-30


19,500


724-48


680


77-33


26.08


8,000


4-47


9-45


2O,OOO


736.81


690


78.08


26.27


8,500


4-5 1


9.60


2O,5OO


749.04


700


78.84


26.46


9,000


4-56


9-74


2I,OOO


761.17








9>5o


4.60


9-87


2I,5OO


773-20








10,000


4-64


10.00


22,OOO


785.14








10,500


4-67


10.13


22,500


796.99








11,000


4-72


10.23


23,OOO


808.76








11,500


4-75


io-35


23,500


820.44








12,000


4-77


10.46


24,OOO


832.04








12,500


4.82


10.58


24,500


843-55








13,000


4-85


10.68


25,OOO


854.98








13,5


4-8 7


10.78


25,500


866.35








14,000


4.91


10.88


26,000


877-64








14,500


4-94


10.98


26,500


888.86








15,000


4-97


11.08


27,OOO


900.00








^S 00


4-99


n. 18


27,500


911.08








16,000


5-02


11.25


28,OOO


922.06








16,500


5-S


11.32


28,5OO


933-04








17,000


5-7


11.40


29,OOO


943 -9 1








i7,5


5- 10


11.50


29,500


954-73








18,000


5-12


JI -59


30,000


965.49








18,500


5-i4


11.65


30,500


976.18








19,000


5-i6


n-73


31,000


986.83








19,500


S-^


11.81


3 I ,5


997.40








20,000


5-20


11.89


32,000


1007.9








20,500


5-22


11.97


32,500


1018.5








21,000


5-25


12.03


33,ooo


1028.8








2I,5OO


5-27


12.10


33,5oo


I0 39-3








22,OOO


5- 2 9


12.19


34,000


1049.7








22,5OO


5-31


12.24


34,500


1059.8








23,000


5-33


12.30


35>


1070.3








23,500


5-35


12-37







124



TABLES



POWERS OF



MODEL.



V


yi


Ft


V 1 ' 8 *


F 2-94


V 3


F 5


I.O


I.OO


I.OO


I.O


I.O


I.O


I.O


1.2


1.031


1.256


1.424


1.709


1.728


2.49


1.4


1.058


1.522


1.920


2.689


2-744


5-37


1.6


1.081


i. 800


2.488


3.982


4.096


10.48


1.8


1.103


2.088


3- I2 7


5.629


5-832


18.89


2.O


1. 122


2.380


3-837


7.674


8.000


32.00


2.2


I.I4O


2.660


4.616


10.15


10.65


5 I -53


2.4


I - I 57


2.990


5-465


13.11


13.82


79-64


2.6


I-I73


3-300


6-383


16.59


17-58


118.81


2.8


1.187


3.620


7-37


20.63


2i-95


172.10


3-0


I.2OI


3-945


8.425


25.27


27.00


243.00


3-2


I.2I4


4.27


9-549


30-55


32-77


335-54


3-4


1.226


4.61


10.74


36-52


39-3


454-35


3-6


1.238


4.96


12. OO


43.20


46.66


604.66


3-8


1.249


5-30


13-32


50.64


54.87


792-30


4-0


I.26O


5.65


14.72


58.89


64.00


1,024.0


4-2


I.27O


6.00


16.18


67.97


74-09


1,306.9


4-4


1.280


6.38


17.71


77-93


85.18


1,649.2


4-6


I.29O


6.65


19.30


88.81


97-34


2,059.6


4-8


1.298


7.10


20.97


100.6


no. 6


2,548.0


5-


1.308


7-49


22.69


U3-4


125.0


3> I2 5-


5- 2


I.3I6


7.86


24.49


127-3


140.6


3,802.0


5-4


J -3 2 5


8.25


26.3^


142-3


J 57-5


4,591.6


5-6


i-33 2


8.50


28.28


158-3


!75- 6


5,507.3


5-8


i-340


9.00


30.27


*75-5


I 95- 1


6,563.6


6.0


i-348


9.40


3 2 -33


193-9


216.0


7,776.0


6.2


1-356


9.80


34-45


213.6


238-3


9,161.3


6.4


1.362


10.19


36.64


234-5


262.1


10,738


6.6


1-37


10. 60


38.89


256 - 7


287-5


I2 ,523


6.8


J -37 6


10.49


41.21


280.2


3U-4


14,539


7-


1-384


11.40


43.60


35 - 2


343-o


16,807


7-2


1.390


11.78


46.05


331-5


373-2


*9,349


7-4


1.396


12.21


48.56


359-3


405.2


22,190


7.6


1-403


12.62


5 I - I 4


388.6


439-o


25,355


7-8


1.409


13-05


53-78


419-5


474-5


28,872


8.0


1-415


13-46


56-49


45*-9


512.0


32,768


8.2


1.420


13.90


59.26


485.9


55 J -4


37,074


8-4


1.426


14-3


62.10


521.6


59 2 -7


41.821


8.6


I-43 2


U-75


65.00


559-o


636.1


47,043


8.8


1-437


15-15


67.96


598.1


681.5


52,773


9-


1-443


i5-6


70.99


638-9


729.0


59,049


9-2


1.448


16.0


74-o8


681.6


778-7


65,908


9-4


!-453


16.5


77.24


726.1


830.6


73,39


9-6


1.458


16.9


80.46


772.4


884.7


8i,537


9-8


1.463


!7-3


83-74


820.7


941.2


90,392


IO.O


1.468


17.7


87.09


870-9


IOOO


100,000


10.5


1.480


18.9


95-74


1005


1158


127,630


II. O


1.492


20.0


104.7


1152


J33 1


161,050


ZI -5


I -53


21.2


114.2


1313


1521


201,140


12.


1-513


22.3


124.0


1488


1728


248,830



TABLES



125



SPEEDS.



SHIP.



V


V*


F?


pLUI


F 2.8:5


V s


V s ~


I


.0


x.o


I


I


i


I


2


.122


2.380


3-54


7.09


8


32


3


.201


3-945


7-42


22.2


27


243


4


.260


5- 6 5


12.55


50-2


64


1,024


5


.308


7-49


18.86


94-3


I2 5


3> I2 5


6


-348


9.40


26.31


157-8


216


7,776


7


.384


ii .40


34-85


244.0


343


16,807


8


-415


13.46


44-47


355-8


5"


32,763


9


443


15 .60


55-14


496.2


729


59,049


10


.468


17.70


66.83


668.3


1,000


100,000


ii


.492


20.00


79-53


874.8


1.33*


161,0^0


12


-513


22.38


93-2i


1,118


1,728


248,830


J 3


-533


24.68


107.8


1,402


2,197


371,290


14


-553


27.07


I2 3-5


1,729


2,744


537,820


15


-57


29-5 1


140.0


2,IOI


3,375


759,370


16


-587


32-00


157-5


2,521


4,096


1,048,600


17


.605


34-5i


176.0


2,992


4,9 J 3


1,419,900


18


.620


37-oS


195-3


3,5*6


5,832


1,889,600


iQ


-634


39-67


215 .6


4,097


6,859


2,476,100


20


.648


42.30


236.8


4,735


8,000


3,200,000


21


.661


44.96


258.8


5,435


9,261


4,084,100


22


-675


47.64


281.7


6,199


10,648


5,153,600


2 3


.686


5-37


305-6


7,028


12,167


6,436,300


24


.698


53-^2


330-2


7,926


13,824


7,962,600


5


.710
.721


55-9
58-71


355-8
382.2


8,895
9,938


J 5,625
17,576


9,765,600
11,881,000


27


-732


6l -55


409.4


11,056


19,683


14,349,000


28


-742


64.40


437-5


12,252


21,952


17,210,000


29


-753


67.30


466.5


I35*9


24,389


20,511,000


30


.762


70.21


496-3


14,889


27,000


24,300,000


3i


.771


73-15


526.9


16,334


29,791


28,629,000


3 2


.780


76.11


558-3


17,867


32,768


33,554,000


33


.790


79.09


590-5


19,490


35>937


39,135,000


34


.800


82.10


623.6


21,204


39,304


45,435,000


35


.810


85-13


657-5


23,014


42,875


52,522,000


36


.819


88.18


692.2


24,920


46,656


60,466,000


37


.826


91-25


727-7


26,925


50,653


69,344,ooo


38


834


94-34


764.0


29,033


54,872


79,235,000


39


.841


97-46


801.1


23,243


59,3 T 9


90,224,000


40


1.849


100.65


839.0


33,56o


64,000


102,400,000



126



TABLES
LOGARITHMS.

























Proportional Parts.


Nat
























Nos





1


2


3


4


5


1 2 3 4 5 6 7 8 10 12 13 14

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