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and the propeller was directly driven. By aligning the cylinders the diameter of the engine was less than more conventional radial engines, and it was thought that the use of a
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The H-1640 was the first airworthy 'inline radial' and was sponsored for flight testing in a range of aircraft by the U.S. Government. Among the types selected were the
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in the mid-1920s. In contrast to most multi-row radials, where the cylinders in the rows are staggered to present better airflow for cooling, the
Chieftain used the
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The H-1640 was an air-cooled 12 cylinder two-row radial with the cylinder rows aligned rather than staggered as in most multi-row radials. One piece
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149:. Cooling problems with the rear cylinders caused the project to be canceled with few production engines being built.
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arrangement with the cylinders behind each other to allow pairs of cylinders to share a cast
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114:. The design saw some use in the 1920s but was quickly passed by newer designs.
17:
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Curtis H 1640 Engine - located at the Wings Over The
Rockies museum, Denver, CO
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Abandoned military aircraft engine projects of the United States
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could make the engine more aerodynamically efficient than an
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although this engine had 16 aligned cylinders, forming an
419:. Cambridge, England. Patrick Stephens Limited, 1989.
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fitted with a
Curtiss H-1640 Chieftain during testing
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401:www.enginehistory.org Retrieved: 17 September 2009
27:Unusual American 12-cylinder radial aero engine
240:12-cylinder, two-row, air-cooled radial engine
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8:
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29:
7:
91:was an unusual American 12-cylinder
1320:US military gas turbine aeroengines
417:World Encyclopaedia of Aero Engines
100:Curtiss Aeroplane and Motor Company
72:Curtiss Aeroplane and Motor Company
304:Single Stromberg NA-U8J carburetor
160:. Further similar engines are the
25:
319:Direct drive, right-hand tractor
138:. The engine first ran in 1927.
38:
1:
1356:1920s aircraft piston engines
49:National Air and Space Museum
1325:Piston engine configurations
166:Armstrong Siddeley Deerhound
1382:
98:designed and built by the
1307:
89:Curtiss H-1640 Chieftain
46:
37:
32:
1346:Curtiss aircraft engines
366:List of aircraft engines
205:Thomas-Morse XP-13 Viper
162:Armstrong Siddeley Hyena
152:A similar engine is the
1291:W-configuration inline)
620:H-configuration inline)
608:piston aircraft engine
350:0.68 hp/lb (1.13 kW/kg)
341:0.38 hp/cu in (17 kW/L)
232:General characteristics
211:Specifications (H-1640)
1271:VG (inverted-V inline)
696:L (single-bank inline)
668:IV (inverted-V inline)
606:United States military
220:
185:
118:Design and development
1366:Inline radial engines
1248:V (inverted-V inline)
346:Power-to-weight ratio
218:
179:
47:H-1640 engine at the
1170:V (upright-V inline)
267:1,640 cu in (26.9 L)
164:and the much larger
389:Gunston 1989, p. 46
610:designation system
221:
190:Curtiss XP-22 Hawk
186:
143:Thomas-Morse XP-13
1333:
1332:
572:
571:
399:Curtiss Chieftain
298:Overhead camshaft
227:enginehistory.org
128:overhead camshaft
85:
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16:(Redirected from
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465:aircraft engines
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396:
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273:45 in (1,143 mm)
258:5½ in (139.7 mm)
249:5⅝ in (142.9 mm)
200:Curtiss P-6 Hawk
126:shared a single
42:
30:
21:
18:Curtiss H-1640-1
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332:615 hp (459 kW)
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308:Cooling system:
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282:900 lb (408 kg)
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180:A Thomas-Morse
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124:cylinder heads
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425:1-85260-163-9
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363:
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361:
360:Related lists
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349:
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338:
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331:
330:Power output:
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195:Curtiss YP-20
193:
191:
188:
187:
183:
178:
171:
169:
167:
163:
159:
155:
154:Bristol Hydra
150:
148:
147:Curtiss XO-18
144:
139:
137:
136:inline engine
133:
129:
125:
117:
115:
113:
109:
108:cylinder head
105:
104:inline radial
101:
97:
94:
90:
80:
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76:
73:
70:
68:Manufacturer
67:
66:
63:
60:
57:
54:
53:
50:
45:
41:
36:
31:
19:
1311:
553:
416:
409:Bibliography
394:
385:
359:
358:
344:
335:
329:
313:
307:
302:Fuel system:
301:
292:
276:
270:
263:Displacement
261:
252:
243:
237:
226:
223:
222:
172:Applications
151:
140:
132:Townend ring
121:
88:
86:
749:O (opposed)
324:Performance
182:XP-13 Viper
96:aero engine
62:aero engine
1340:Categories
1261:V-1650 (L)
1223:V-1650 (P)
945:R-370 (LB)
922:R (radial)
496:Challenger
372:References
310:Air-cooled
294:Valvetrain
287:Components
278:Dry weight
78:First run
1312:See also:
975:R-540 (K)
970:R-540 (W)
950:R-370 (K)
892:O-540 (L)
887:O-540 (F)
852:O-360 (L)
847:O-360 (C)
817:O-200 (F)
812:O-200 (C)
271:Diameter:
224:Data from
112:camshafts
355:See also
145:and the
1279:VG-1410
1160:XR-7755
686:IV-2220
681:IV-2040
676:IV-1430
653:XH-3730
648:XH-3130
643:XH-2600
638:XH-2470
633:XH-2240
511:Model K
462:Curtiss
158:octagon
33:H-1640
1315:X-1800
1299:W-2779
1238:V-3420
1233:V-1950
1228:V-1710
1218:V-1570
1213:V-1560
1208:V-1510
1203:V-1460
1198:V-1440
1193:V-1400
1188:V-1237
1183:V-1150
1155:R-4360
1150:R-4090
1145:R-3350
1140:R-2800
1135:R-2600
1130:R-2180
1125:R-2160
1120:R-2060
1115:R-2000
1110:R-1860
1105:R-1830
1100:R-1820
1095:R-1750
1090:R-1690
1085:R-1670
1080:R-1640
1075:R-1535
1070:R-1510
1065:R-1454
1060:R-1340
1055:R-1300
1050:R-1044
1040:DR-980
912:O-1230
658:H-4070
628:H-1640
564:R-1454
554:H-1640
531:V-1570
423:
254:Stroke
93:radial
59:Radial
1256:V-770
1178:V-720
1045:R-985
1035:R-975
1030:R-915
1025:R-830
1020:R-790
1015:R-760
1010:R-755
1005:R-720
1000:R-680
995:R-670
990:R-600
985:R-550
980:R-545
965:R-500
960:R-440
955:R-420
940:R-270
935:R-265
930:R-250
907:O-805
902:O-580
897:O-550
882:O-520
877:O-480
872:O-470
867:O-435
862:O-425
857:O-405
842:O-335
837:O-300
832:O-290
827:O-235
822:O-205
807:O-190
802:O-180
797:O-175
792:O-170
787:O-150
782:O-145
777:O-100
739:L-825
734:L-510
729:L-440
724:L-410
719:L-390
714:L-375
709:L-365
704:L-330
559:R-600
377:Notes
238:Type:
81:1926
55:Type
772:O-90
767:O-45
762:O-40
757:O-15
521:OX-5
506:K-12
501:D-12
421:ISBN
245:Bore
110:and
87:The
536:V-2
526:OXX
491:C-6
486:B-8
481:A-2
1342::
168:.
598:e
591:t
584:v
516:O
454:e
447:t
440:v
348::
339::
317::
296::
280::
265::
256::
247::
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
