Transactions Society Naval Architects and Marine Enginecrs, Vol. 24, 1916. Plate 33. 
To illustrate paper on “Aeronautics in Relation to Naval Archntecture,” 
by Naval Constructor H. C. Richardson, U S. N., Member. 
| c ee a 
WHEN TRYING FOR 3 KNOTS, E LPT N@I439-1, Bow WENT UNDER WATER SO FAR] = 
— |THAT IT HAD TO BE HELD TO PREVENT CAPSIZING ENDWAYS MEAN CUB 5 
ee i COULD NOT BE EXTENDED To 1540 LB CONDITION, AS Bone AS ae SLE 10 
THIS CONDITION 
ee STR RN eager — — S 
L _& Srepn ar Reet Expy Ne 1439-1. |e 14 39-Is1-| Bitz a =H 
x SS = = es SE 
-t OO oOo 
BG ae “0 
~ = ° 2 a 
0 aN — a 
a 
Zz aS 40 
3 Se -- ~_- 2 
a a —— — Levee: oF Bow & STERN At REOxEXP'r, NE ; 
i z N =—— 
z [Ss 7) z 
0 a ee a 
M4 Se “10 > 
s 
5 
& ee +10 = 
ew ° 
a Pie oye 
N  Levec of Bow & Sunn at Reet, ExPrNe 437 : z 
0 NoTe-When TRYING FOR 290 Knots, Exes 43771, = 
4 Bow WENT UNDER WATER so FAR THAT iT KAD Io eH 2 
TO BE NED, THUS SHOVING UNSTABLE °o 
r4 CONDITIO#S AT THAT SPEED “0 = 
k 3 
o 0 j 
t 
z as O-|—=e — -STEBN 1436~) 40 
ar Pk 
7 1000__eee == — LE or Bowe Senn + [Reet Expt N# 1436-1 
== 6-\ aS ce ee ae 
= 
% a Se ae ; 
Pa are ___ Bow GenNeRaL NoTes— ALL MODELS WERE TOWED IK THE FREE 
oO : ie CONDITION FROM A POINT ASouT Ilz ABove C.B. AND 15% FORD 14.39 -ler ALTERAS OF BOW SHOWN DOTTED a 
g EXPERIMENTAL MODEL BASIN 2 OF EXTREME POINT OF STERN. SKETCH OF TOWINGGEAR| =: . 5 
D CURVES OF RESISTANCE J CHANGE OF LEVEL ave on ehERrY oF ExPre. [410-1419 \iNc. 4-0 FH bone SS eae SS 
14 oF METHOD OF CONDUCTING EXPERIMENTS EXPLAINED ON oat 
(2 SERIES OF PONTOON MODELS FOR USE SHEET oF ExP're, 1414-627. 2 
i CURTISS NAVAL AEROPLANE STERNS OF THESE MODELS ARE OF ORIGINAL CURTISS 
y z = == TYPE. BowS EXTEND To MIDSHIPS AND INCREASED OR 4'-1 ZB Lone ee ea SO 
< Nature oF Exreriments DECREASED IN LENGTH TO GIVE SAME DISPLACEMENTS J 
¥ Bow PROFILE, CIRCULAR Arc, [FLOATING FREELY, MODEL TRIMMED 9 BY THE STERN AT LOAD DRAUGHT LINE OF II" ON FULL SIZED PONTOONS| ie 
PARABOLA, Bow ;, FLoxtina FReeiy, MODEL RIMMED 3 SY THE STERN. TWO TUBES PLACED IN EACH STERN 2 AFT OF sy 
: = SL | JUNCTION LIE OF BOW ESTERN. THESE TUBES WeRE OPEN 4 -23 Lone " 1437 SS 
= - 4 = + = = —— IM ALL CASE® UNLESS CONTRARY IS NOTED On CURVES. ————>~=g H 
+——___+* “ “ = = SS CHANGES OF LEVEL HAVE BEEN CORRECTED TO READ 
» ALTERED AS SHDWN 5 - = “ < qos 4 AT EXTREME ENDS OF STEM & STERN.IN SOME CASES 
THERE WAS “PUMPING” PRESENT ANP MORE THAN ONE S Lo 1436 
VALUE OF CHANGE OF LEVEL WAS OBTAINED'CoRRES PONDING 
500 SPoTs FoR BOW STERN ARE JOINED BY FINELY DOTTED 0 
LINES. INASMUCH AS THE RESISTANCE RECORDED AT THE! 
SPOTS IS A MEAN RESISTANCE THE BOW & STERN cuRVES 
ARE DRAWN AS MEAN CURVES THErARE HOT To BE 
tr] TAKEN AS RIGOROUSLY REPRESENTING THE CHANGE OF 
@| LEVEL AT THESE POINTS, THE DOUBLE READINGS 
Ear M2 1899-1, B} INDICATING THAT CONDITIONS ARE UNSTABLE. A 
—2— + 1438-1 4 FOR CONVENIENCE DISPLACEMENTS AREGIVEN | 
x ra =I \ IN TERMS OF THE FULL SIZED FONTOONS 14374 o 
i = 438-4 
4 4 (439-l5y,1 5 
ae 4 ereeees esses 
So a a 
ia 
6 7 8 9 ‘ 10 " 12 13 4 is 16 v 
SCALE FOR SPEED IN KNOTS 
ETERS CO., WASHINGTON, D.C 
SCALE FOR RESISTANCE IW Pounds: 
