336:
37:
459:
The HM was built by using a stock 1-23H fuselage and tail assembly. Starr built a new set of 54 foot (16.6 m) span wings with an aspect ratio of 23.5:1. The wings took 1500 hours to construct, but the resulting aircraft has a glide ratio of 33.2:1 which is a 7% improvement over the stock 1-23H. The
306:
The "C" was subsequently sold to by Larry
Gehrlein who modified it to a large degree. It was crashed and rebuilt with a set of 1-23D wings. It was later damaged again in an accident and rebuilt by the factory as a "D" model. In the mid-1980s it was owned by the Rochester Soaring
283:
The "C" model was also built in 1952 and, like the "B", incorporated a longer wing with a 50 foot span. The "C" had heavier wing skins and a heavier spar and, as a result, weighed 90 lbs more than the "B". There was only one "C" model built for the designer
409:
The 1-23G was the production version of the 1-23E and F. It retained the 52.8 foot wing and had the same glide ratio of 31:1 at 46 mph and a minimum sink speed of 1.95 feet per second at 40 mph. The "G" had a redesigned taller fin and top-surface spoilers
142:
The original "standard" 1-23 was introduced in 1948. The aircraft quickly became the most numerous competition and performance sailplane in the USA. A total of 93 of all sub-models were built by the time production was completed in 1967.
257:
The "B" model was introduced in 1952 and incorporated a longer wing of 50 feet in span. The spars were standard 1-23 spars with a spliced section added. There was only one "B" model built. It was a custom order for
235:
Gross weight for serial numbers 1 to 11 was 600 lbs. Later 1-23 standards had a gross weight of 660 lbs. One "standard" was retrofitted at the factory with water ballast for Kim
Scribner. There were 22 "standards"
980:
423:
The 1-23H was designed by adding balanced dive brakes to the "G", designing a square fin and rudder to replace the rounded ones found on earlier models, adding removable wingtips plus other minor changes.
379:, United Kingdom. He flew the "E" to a fourth place finish. The aircraft was originally constructed without a wheel and used a skid for takeoff and landing. After the Worlds a wheel was retrofitted.
349:
The "D" has a wingspan of 50 feet and a glide ratio of 30:1 at 48 mph, with a minimum sink of 2.0 feet per second at 36 mph. The gross weight on the "D" and later models is 750 lbs.
442:
The type received its type certificate on 13 March 1961 and a total of 47 were built, including 39 H-15s. Production of the "H" ended in 1967, completing a 19-year production run.
151:
Schweizer
Aircraft started construction of the 1-23 prototype in May 1948. The aircraft was completed and first flew on 5 July 1948, only nine weeks after construction had begun.
1188:(in English, French, and German) (1st ed.). Zurich: Organisation Scientifique et Technique Internationale du Vol a Voile (OSTIV) and Schweizer Aero-Revue. pp. 234–237.
200:
Paul Bikle flew the sole 1-23E to a world absolute altitude record of 46,267 feet for a record gain of 42,300 feet on 25 February 1961. The records were set in the
892:
161:
The first production 1-23 was ordered by E.J Reeves. The success of this aircraft led to more orders and series production was commenced. The 1-23 was initially sold on a "
230:
The original 1-23 model is also referred to as a "standard". The aircraft had a 43.83 foot wingspan and a glide ratio of 27:1, with a minimum sink of 2.3 feet per second.
193:
1-23Ds were flown by Paul McCready to win the 1953 US Nationals and to set a distance record of 455.5 miles (733 km) by Joe
Lincoln. Lincoln was awarded the
169:
362:
The 1-23E has 52.8 foot wings equipped with balanced dive brakes. It has a glide ratio of 31:1 at 46 mph and a minimum sink speed of 1.95 feet per second at 40 mph.
388:
and he used it to set two world altitude records on 25 February 1961. In the mid-1980s it was owned by the
Rochester Soaring Club. The 1-23E was not certified.
1228:
1004:
1578:
344:
The 1-23D was introduced in 1953 and incorporated the improvements tested in the "B" and "C" models at the 1952 World
Championships and beyond.
190:
A 1-23, flown by
William Ivans, set a world altitude record for gliders on 30 December 1950, reaching a height of 42,089 ft (12,840 m).
1593:
840:
396:
The 1-23F was a 1-23E with the same 52.8 foot wings but was constructed with heavier gauge, butt-constructed wing skins. Only one was built.
428:
The "H-15" reduced the span from 52.8 feet to 49.2 feet (15.0 m) which, combined with the dive-brakes, qualified the type for the then new
1048:
241:
Many pilots like the faster roll and better circling characteristics of the "standard" over the later longer-winged versions of the 1-23.
964:
736:
437:
In its
Standard Class configuration the "H-15" has a 29:1 glide ratio at 50 mph and a minimum sink of 2.2 feet per second at 37 mph.
1221:
1115:
1068:
1044:
976:
888:
1301:
1296:
1286:
1281:
83:
1145:
1583:
1515:
1416:
1214:
372:
289:
263:
1588:
549:
429:
124:
215:. Bikle flew the record flights without cabin pressurization or a pressure suit. His record stood for many years.
1406:
1598:
1170:
933:
484:
471:
1201:
432:. With removable wingtips the aircraft could be easily converted between the standard class and open class.
1505:
1421:
1008:
492:
451:
1119:
1072:
470:
The aircraft is registered as N94298 and is currently owned by
Vincent Grisemer. It is on loan to the
212:
201:
354:
A total of 12 "D" models were produced. The aircraft received its type certificate on 1 June 1953.
1557:
1552:
1547:
1510:
1411:
1401:
1396:
1391:
1386:
1371:
1366:
1361:
1356:
1351:
1346:
1336:
1331:
1326:
1321:
1316:
1311:
1306:
1291:
1237:
844:
415:
A total of eight 1-23Gs were constructed. The type received its type certificate on 12 June 1958.
320:
316:
313:
285:
208:
132:
128:
60:
56:
728:
1381:
1376:
1276:
1271:
1266:
1261:
1256:
1251:
1164:
960:
927:
732:
182:. K & L Soaring now provides all parts and support for the Schweizer line of sailplanes.
1000:
194:
179:
172:
155:
136:
93:
1531:
1489:
691:
165:" basis, which allowed them to be sold at a lower price than through the dealer network.
158:
and the aircraft was available for him to fly it in the second half of the US Nationals.
1484:
1479:
1474:
1442:
1437:
721:
679:
368:
275:
The production version of the "B" model was the "D" model. The 1-23B was not certified.
259:
162:
52:
335:
36:
1572:
1458:
376:
640:
with full air-brakes at max all-up weight 140 mph; 121 kn (225 km/h)
583:
575:
567:
1186:
The World's
Sailplanes:Die Segelflugzeuge der Welt:Les Planeurs du Monde Volume II
507:
The World's Sailplanes:Die Segelflugzeuge der Welt:Les Planeurs du Monde Volume II
658:
123.0 ft/min (0.625 m/s) at 37.3 mph; 32.4 kn (60 km/h)
454:
in the "racing-exhibition" category by Sterling Starr and designated SGS 1-23HM.
1149:
218:
In April 2008 there were still 49 1-23s registered in the USA and 5 in Canada.
385:
17:
326:
to produce an aircraft with a 53.5 foot wing span and a glide ratio of 32:1.
204:
1097:
Said, Bob (November 1983). "1983 Sailplane Directory, Soaring Magazine".
1029:
Said, Bob (November 1983). "1983 Sailplane Directory, Soaring Magazine".
610:
323:
558:
1206:
293:
267:
334:
1210:
178:
The type certificate is currently held by K & L Soaring of
957:
Wings Like Eagles, The Story of Soaring in the United States
723:
Wings Like Eagles, The Story of Soaring in the United States
727:. Washington, D.C.: Smithsonian Institution Press. p.
913:
401:
The 1-23F received its type certificate on 12 June 1958.
799:
Said, Bob (November 1983). "1983 Sailplane Directory".
312:
The "C" wings were also later rebuilt and used in the
1101:. Hobbs, New Mexico: Soaring Society of America: 64.
1033:. Hobbs, New Mexico: Soaring Society of America: 43.
652:
30.8:1 at 50.3 mph; 43.7 kn (81 km/h)
1540:
1524:
1498:
1467:
1451:
1430:
1244:
1092:
1090:
1088:
674:
Aircraft of comparable role, configuration, and era
720:
154:The prototype had been ordered by Bill Frutchy of
959:, page 183. Smithsonian Institution Press, 1988.
319:. The Precursor mounts the 1-23C wings high on a
834:
832:
830:
828:
826:
824:
822:
820:
818:
816:
814:
812:
810:
794:
792:
790:
788:
786:
784:
782:
780:
778:
776:
774:
772:
770:
768:
1120:"FAA Registry N-Number Inquiry Results N94298"
766:
764:
762:
760:
758:
756:
754:
752:
750:
748:
465:The 1-23HM was flown in the 1966 US nationals.
1222:
487:– 1-23D, N91899, and the sole 1-23HM, N94298.
8:
460:HM later had retractable landing gear added.
714:
712:
710:
708:
706:
634:67.7 mph; 58.9 kn (109 km/h)
1229:
1215:
1207:
615:140 mph (225 km/h, 121 kn)
1202:Detailed photos of a SGS 1-23D in the NSM
1110:
1108:
622:140 mph; 121 kn (225 km/h)
367:A single 1-23E model was constructed for
1184:Shenstone, B.S.; K.G. Wilkinson (1963).
628:110 mph; 96 kn (177 km/h)
702:
664:4.5 lb/sq ft (22.2 kg/m)
450:One production 1-23H was rebuilt as an
1162:
1139:
1137:
1135:
925:
883:
881:
646:+6 -4 at 125.3 kn (232 km/h)
545:164.94 sq ft (15.323 m)
533:52 ft 8.0 in (16.052 m)
384:The aircraft was subsequently sold to
26:
879:
877:
875:
873:
871:
869:
867:
865:
863:
861:
527:20 ft 5.4 in (6.232 m)
123:is a United States Open and Standard
7:
803:. Soaring Society of America: 28–30.
539:3 ft 6.7 in (1.085 m)
1005:"Canadian Civil Aircraft Register"
197:in 1960 for that distance flight.
25:
288:specifically to fly in the 1952
262:specifically to fly in the 1952
170:Civil Aeronautics Administration
35:
1116:Federal Aviation Administration
1069:Federal Aviation Administration
1045:Federal Aviation Administration
977:Federal Aviation Administration
889:Federal Aviation Administration
1579:1940s United States sailplanes
1146:"Sailplanes in Our Collection"
893:"GLIDER SPECIFICATION NO. 1G1"
84:Schweizer Aircraft Corporation
1:
1594:Aircraft first flown in 1948
301:The 1-23C was not certified.
373:World Gliding Championships
290:World Gliding Championships
264:World Gliding Championships
249:There were no 1-23As built.
1615:
912:K & L Soaring (n.d.).
719:Schweizer, Paul A (1988).
597:750 lb (340 kg)
591:481 lb (218 kg)
175:1G1 on 22 November 1949.
43:
34:
29:
1558:William (Bill) Schweizer
1245:Sailplanes & Gliders
914:"K & L Soaring, LLC"
127:, single-seat, mid-wing
1499:Reconnaissance Aircraft
839:Activate Media (2006).
512:General characteristics
500:Specifications (1-23-H)
485:National Soaring Museum
472:National Soaring Museum
371:to compete in the 1954
340:
147:Design and development
1431:Agricultural Aircraft
1073:"FAA Registry N94298"
946:Bridgman 1951, p. 6b.
452:experimental aircraft
338:
1169:: CS1 maint: year (
932:: CS1 maint: year (
841:"SGS 1-23 Schweizer"
650:Maximum glide ratio:
620:Rough air speed max:
213:Inyokern, California
44:Schweizer SGS 1-23D
1452:Amphibious Aircraft
1144:Munson, J. (n.d.).
955:Schweizer, Paul A:
632:Winch launch speed:
493:El Mirador airfield
479:Aircraft on display
186:Operational history
1584:Schweizer aircraft
1238:Schweizer Aircraft
891:(September 2007).
638:Terminal velocity:
611:Never exceed speed
420:1-23H and 1-23H-15
341:
317:Gehrlein Precursor
209:Mojave, California
168:The 1-23 received
133:Schweizer Aircraft
121:Schweizer SGS 1-23
1589:Mid-wing aircraft
1566:
1565:
1516:RU-38 Twin Condor
117:
116:
16:(Redirected from
1606:
1553:Paul A Schweizer
1548:Ernest Schweizer
1231:
1224:
1217:
1208:
1190:
1189:
1181:
1175:
1174:
1168:
1160:
1158:
1157:
1148:. Archived from
1141:
1130:
1129:
1127:
1126:
1112:
1103:
1102:
1099:Soaring Magazine
1094:
1083:
1082:
1080:
1079:
1065:
1059:
1058:
1056:
1055:
1041:
1035:
1034:
1031:Soaring Magazine
1026:
1020:
1019:
1017:
1016:
1007:. Archived from
1001:Transport Canada
997:
991:
990:
988:
987:
973:
967:
953:
947:
944:
938:
937:
931:
923:
921:
920:
909:
903:
902:
900:
899:
885:
856:
855:
853:
852:
843:. Archived from
836:
805:
804:
801:Soaring Magazine
796:
743:
742:
726:
716:
605:
514:
495:- 1-23h, ZS-GDN.
286:Paul A Schweizer
195:Barringer Trophy
180:Cayuta, New York
173:type certificate
156:Elmira, New York
137:Elmira, New York
110:
94:Paul A Schweizer
72:
64:Type of aircraft
39:
27:
21:
1614:
1613:
1609:
1608:
1607:
1605:
1604:
1603:
1599:Glider aircraft
1569:
1568:
1567:
1562:
1536:
1532:MQ-8 Fire Scout
1520:
1494:
1463:
1447:
1426:
1240:
1235:
1198:
1193:
1183:
1182:
1178:
1161:
1155:
1153:
1143:
1142:
1133:
1124:
1122:
1114:
1113:
1106:
1096:
1095:
1086:
1077:
1075:
1067:
1066:
1062:
1053:
1051:
1043:
1042:
1038:
1028:
1027:
1023:
1014:
1012:
999:
998:
994:
985:
983:
975:
974:
970:
954:
950:
945:
941:
924:
918:
916:
911:
910:
906:
897:
895:
887:
886:
859:
850:
848:
838:
837:
808:
798:
797:
746:
739:
718:
717:
704:
700:
692:List of gliders
671:
616:
601:
510:
502:
481:
339:Schweizer 1-23D
321:Schweizer 1-26A
224:
188:
149:
113:93 (all marks)
108:
71:National origin
70:
65:
23:
22:
15:
12:
11:
5:
1612:
1610:
1602:
1601:
1596:
1591:
1586:
1581:
1571:
1570:
1564:
1563:
1561:
1560:
1555:
1550:
1544:
1542:
1538:
1537:
1535:
1534:
1528:
1526:
1522:
1521:
1519:
1518:
1513:
1508:
1502:
1500:
1496:
1495:
1493:
1492:
1487:
1482:
1477:
1471:
1469:
1465:
1464:
1462:
1461:
1455:
1453:
1449:
1448:
1446:
1445:
1443:Ag Cat Super B
1440:
1434:
1432:
1428:
1427:
1425:
1424:
1419:
1414:
1409:
1404:
1399:
1394:
1389:
1384:
1379:
1374:
1369:
1364:
1359:
1354:
1349:
1344:
1339:
1334:
1329:
1324:
1319:
1314:
1309:
1304:
1299:
1294:
1289:
1284:
1279:
1274:
1269:
1264:
1259:
1254:
1248:
1246:
1242:
1241:
1236:
1234:
1233:
1226:
1219:
1211:
1205:
1204:
1197:
1196:External links
1194:
1192:
1191:
1176:
1131:
1104:
1084:
1071:(April 2008).
1060:
1049:"FAA Registry"
1036:
1021:
1003:(April 2008).
992:
981:"FAA Registry"
979:(April 2008).
968:
948:
939:
904:
857:
806:
744:
737:
701:
699:
696:
695:
694:
683:
682:
680:Schleicher K 8
670:
667:
666:
665:
659:
653:
647:
641:
635:
629:
626:Aerotow speed:
623:
617:
599:
598:
592:
586:
555:
546:
540:
534:
528:
522:
501:
498:
497:
496:
489:
488:
480:
477:
476:
475:
467:
466:
462:
461:
456:
455:
448:
444:
443:
439:
438:
434:
433:
430:Standard Class
425:
424:
421:
417:
416:
412:
411:
407:
403:
402:
398:
397:
394:
390:
389:
381:
380:
369:Paul MacCready
364:
363:
360:
356:
355:
351:
350:
346:
345:
333:
332:
328:
327:
309:
308:
303:
302:
298:
297:
281:
277:
276:
272:
271:
260:Paul MacCready
255:
251:
250:
247:
243:
242:
238:
237:
232:
231:
228:
223:
220:
187:
184:
163:factory direct
148:
145:
115:
114:
111:
105:
104:
101:
97:
96:
91:
87:
86:
81:
77:
76:
75:United States
73:
67:
66:
63:
57:Standard-class
50:
46:
45:
41:
40:
32:
31:
24:
18:Schweizer 1-23
14:
13:
10:
9:
6:
4:
3:
2:
1611:
1600:
1597:
1595:
1592:
1590:
1587:
1585:
1582:
1580:
1577:
1576:
1574:
1559:
1556:
1554:
1551:
1549:
1546:
1545:
1543:
1539:
1533:
1530:
1529:
1527:
1523:
1517:
1514:
1512:
1509:
1507:
1504:
1503:
1501:
1497:
1491:
1488:
1486:
1483:
1481:
1478:
1476:
1473:
1472:
1470:
1466:
1460:
1457:
1456:
1454:
1450:
1444:
1441:
1439:
1436:
1435:
1433:
1429:
1423:
1420:
1418:
1415:
1413:
1410:
1408:
1405:
1403:
1400:
1398:
1395:
1393:
1390:
1388:
1385:
1383:
1380:
1378:
1375:
1373:
1370:
1368:
1365:
1363:
1360:
1358:
1355:
1353:
1350:
1348:
1345:
1343:
1340:
1338:
1335:
1333:
1330:
1328:
1325:
1323:
1320:
1318:
1315:
1313:
1310:
1308:
1305:
1303:
1300:
1298:
1295:
1293:
1290:
1288:
1285:
1283:
1280:
1278:
1275:
1273:
1270:
1268:
1265:
1263:
1260:
1258:
1255:
1253:
1250:
1249:
1247:
1243:
1239:
1232:
1227:
1225:
1220:
1218:
1213:
1212:
1209:
1203:
1200:
1199:
1195:
1187:
1180:
1177:
1172:
1166:
1152:on 2011-05-16
1151:
1147:
1140:
1138:
1136:
1132:
1121:
1117:
1111:
1109:
1105:
1100:
1093:
1091:
1089:
1085:
1074:
1070:
1064:
1061:
1050:
1046:
1040:
1037:
1032:
1025:
1022:
1011:on 2008-05-03
1010:
1006:
1002:
996:
993:
982:
978:
972:
969:
966:
965:0-87474-828-3
962:
958:
952:
949:
943:
940:
935:
929:
915:
908:
905:
894:
890:
884:
882:
880:
878:
876:
874:
872:
870:
868:
866:
864:
862:
858:
847:on 2007-08-08
846:
842:
835:
833:
831:
829:
827:
825:
823:
821:
819:
817:
815:
813:
811:
807:
802:
795:
793:
791:
789:
787:
785:
783:
781:
779:
777:
775:
773:
771:
769:
767:
765:
763:
761:
759:
757:
755:
753:
751:
749:
745:
740:
738:0-87474-828-3
734:
730:
725:
724:
715:
713:
711:
709:
707:
703:
697:
693:
690:
689:
688:
687:
686:Related lists
681:
678:
677:
676:
675:
668:
663:
662:Wing loading:
660:
657:
656:Rate of sink:
654:
651:
648:
645:
642:
639:
636:
633:
630:
627:
624:
621:
618:
614:
612:
608:
607:
606:
604:
596:
595:Gross weight:
593:
590:
589:Empty weight:
587:
585:
581:
577:
573:
569:
565:
562:
560:
556:
553:
551:
547:
544:
541:
538:
535:
532:
529:
526:
523:
520:
517:
516:
515:
513:
508:
506:
499:
494:
491:
490:
486:
483:
482:
478:
473:
469:
468:
464:
463:
458:
457:
453:
449:
446:
445:
441:
440:
436:
435:
431:
427:
426:
422:
419:
418:
414:
413:
408:
405:
404:
400:
399:
395:
392:
391:
387:
383:
382:
378:
377:Great Hucklow
374:
370:
366:
365:
361:
358:
357:
353:
352:
348:
347:
343:
342:
337:
330:
329:
325:
322:
318:
315:
311:
310:
305:
304:
300:
299:
295:
291:
287:
282:
279:
278:
274:
273:
269:
265:
261:
256:
253:
252:
248:
245:
244:
240:
239:
234:
233:
229:
226:
225:
221:
219:
216:
214:
210:
206:
203:
202:Sierra Nevada
198:
196:
191:
185:
183:
181:
176:
174:
171:
166:
164:
159:
157:
152:
146:
144:
140:
138:
134:
130:
126:
122:
112:
107:
106:
102:
100:First flight
99:
98:
95:
92:
89:
88:
85:
82:
80:Manufacturer
79:
78:
74:
69:
68:
62:
58:
54:
51:
48:
47:
42:
38:
33:
28:
19:
1422:X-26 Frigate
1341:
1185:
1179:
1154:. Retrieved
1150:the original
1123:. Retrieved
1118:(May 2008).
1098:
1076:. Retrieved
1063:
1052:. Retrieved
1047:(May 2008).
1039:
1030:
1024:
1013:. Retrieved
1009:the original
995:
984:. Retrieved
971:
956:
951:
942:
917:. Retrieved
907:
896:. Retrieved
849:. Retrieved
845:the original
800:
722:
685:
684:
673:
672:
661:
655:
649:
643:
637:
631:
625:
619:
609:
602:
600:
594:
588:
579:
576:NACA 43 012A
571:
568:NACA 43 012A
563:
557:
550:Aspect ratio
548:
542:
536:
530:
524:
518:
511:
509:
504:
503:
217:
199:
192:
189:
177:
167:
160:
153:
150:
141:
120:
118:
109:Number built
103:5 July 1948
1468:Helicopters
603:Performance
584:NACA 23 009
59:(1-23H-15)
1573:Categories
1459:TSC-1 Teal
1156:2008-04-15
1125:2008-05-29
1078:2008-04-19
1054:2008-05-31
1015:2008-04-19
986:2008-04-19
919:2008-04-05
898:2008-04-15
851:2008-04-15
698:References
543:Wing area:
386:Paul Bikle
236:completed.
53:Open-class
644:g limits:
531:Wingspan:
505:Data from
314:homebuilt
131:built by
90:Designer
61:sailplane
30:SGS 1-23
1165:cite web
928:cite web
669:See also
375:held in
324:fuselage
296:, Spain.
292:held in
270:, Spain.
266:held in
222:Variants
207:between
205:lee wave
1511:SA 2-37
559:Airfoil
537:Height:
525:Length:
1541:People
1438:Ag Cat
963:
735:
447:1-23HM
294:Madrid
268:Madrid
129:glider
1490:S-434
1287:15-11
519:Crew:
410:only.
406:1-23G
393:1-23F
359:1-23E
331:1-23D
307:Club.
280:1-23C
254:1-23B
246:1-23A
125:Class
49:Role
1525:UAVs
1506:QT-2
1417:2-38
1412:2-37
1407:1-36
1402:1-35
1397:1-34
1392:2-33
1387:2-32
1382:2-31
1377:1-30
1372:1-29
1367:7-28
1362:2-27
1357:1-26
1352:2-25
1347:1-24
1342:1-23
1337:2-22
1332:1-21
1327:1-20
1322:1-19
1317:2-18
1312:1-17
1307:1-16
1302:1-15
1297:6-14
1292:2-12
1282:9-10
1171:link
961:ISBN
934:link
733:ISBN
564:Root
554:16.9
227:1-23
211:and
119:The
55:and
1485:333
1480:330
1475:300
1277:2-8
1272:1-7
1267:1-6
1262:1-3
1257:1-2
1252:1-1
729:111
580:Tip
572:Mid
135:of
1575::
1167:}}
1163:{{
1134:^
1107:^
1087:^
930:}}
926:{{
860:^
809:^
747:^
731:.
705:^
582:–
578:,
574:–
570:,
566:–
139:.
1230:e
1223:t
1216:v
1173:)
1159:.
1128:.
1081:.
1057:.
1018:.
989:.
936:)
922:.
901:.
854:.
741:.
613::
561::
552::
521:1
474:.
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
