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Boeing P-12E

Boeing P-12E

     
Název:
Name:
Boeing P-12E
Originální název:
Original Name:
Boeing P-12E
Kategorie:
Category:
stíhací letoun
Výrobce:
Producer:
DD.MM.1931-DD.10.1931 Boeing Aircraft Division, United Aircraft & Transport Corp., Seattle, Washington
Období výroby:
Production Period:
DD.MM.1931-DD.10.1931
Vyrobeno kusů:
Number of Produced:
110 P-12E
2 Model 100E
První vzlet:
Maiden Flight:
29.09.1930 Model 218
15.10.1931 P-12E
Osádka:
Crew:
1
Základní charakteristika:
Basic Characteristics:
 
Vzlet a přistání:
Take-off and Landing:
CTOL - konvenční vzlet a přistání
Uspořádání křídla:
Arrangement of Wing:
dvouplošník
Uspořádání letounu:
Aircraft Concept:
klasické
Podvozek:
Undercarriage:
pevný
Přistávací zařízení:
Landing Gear:
kola
Technické údaje:
Technical Data:
 
Hmotnost prázdného letounu:
Empty Weight:
914 kg
Vzletová hmotnost:
Take-off Weight:
1225 kg
Maximální vzletová hmotnost:
Maximum Take-off Weight:
? kg
Rozpětí:
Wingspan:
9.14 m
Délka:
Length:
6.17 m
Výška:
Height:
2.74 m
Plocha křídla:
Wing Area:
21.14 m2
Plošné zatížení:
Wing Loading:
? kg/m2
Pohon:
Propulsion:
 
Kategorie:
Category:
pístový
Počet motorů:
Number of Engines:
1
Typ:
Type:
Pratt & Whitney R-1340-17 Wasp o výkonu 391 kW
dvoulistá kovová vrtule
Objem palivových nádrží:
Fuel Tank Capacity:
208-416 l
Výkony:
Performance:
 
Maximální rychlost:
Maximum Speed:
304.2 km/h v 2134 m
Cestovní rychlost:
Cruise Speed:
257.5 km/h v ? m
Rychlost stoupání:
Climb Rate:
9.8 m/s
Čas výstupu na výšku:
Time to Climb to:
5.8 min do 3048 m
Operační dostup:
Service Ceiling:
9571 m
Dolet:
Range:
941.5 km
Maximální dolet:
Maximum Range:
? km
Výzbroj:
Armament:
2x pevný synchronizovaný 7,62mm kulomet Browning nebo
1x 7,62mm a 1x 12,7mm kulomet Browning

5x 11kg bomba
Uživatelské státy:
User States:


(100E)
Poznámka:
Note:
-
Zdroje:
Sources:

Bowers, Peter M. The Boeing P-12E, Profile No.2. Profile Publications, Leatherhead.
Davis, Larry. P-12/F4B in Action, In Action No.141. Squadron/Signal Publications, Carrollton 1994. ISBN 0-89747-309-4.
Bowers, Peter M. Boeing Aircraft since 1916. London, Putnam 1989. ISBN 0-85177-804-6.
Pelletier, Alain. Boeing - The Complete Story. Haynes Publishing, Yeovil 2010. ISBN 978-1-84425-703-4.
Jones, LLoyd S. U.S. Fighters. Aero Publishers, Inc. Fallbrook 1975.
United States Army and Air Force Fighters 1916-1961, Harleyford Publications, Letchworth 1961.
Fahey, James C. U.S. Army Aircraft 1908-1946. Ships and Aircraft, Falls Church, 1964.
http://joebaugher.com/usaf_fighters/p12.html
http://crimso.msk.ru/Site/Crafts/Craft21450.htm
www.nationalmuseum.af.mil
http://www.aerofiles.com/_boe2.html
http://joebaugher.com/usaf_fighters/p12.html
http://www.airminded.net/F4b/BoeF4b.html

Boeing P-12E -


URL : https://www.valka.cz/Boeing-P-12E-t81282#297863Version : 0
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The roots of the main versions P-12, P-12E, were in a Boeing Model 218, the private machine, on which the company has tested the new design elements. It was basically about P-12B with a metal poloskořepinovým hull, which the company first tested on XP-15, and back across the headrest. Rudder was originally identical with the P-12B, later it was replaced by a higher and rounder. The machine first flew on 29. September, 1930, was tested at McCook Field, where he test designation XP-925, later, after the temporary replacement engine R-1340D for R-1340E, the designation XP-925A. Tests, 218 conducted by the army and navy, shortly even with kapotovaným chassis, with a civilian designation of X66W, and after their end was 218 in 1931 sent to China. There that year Julius Barr showed off a different Boeingův demonstrator, Model 100D, matching P-12D but destroyed in the attempt on the speed record. The Model 218 was in December 1931 sent instead of him. Due to problems with the permit but remained in the warehouse in Shanghai until February of the following year, when it was made operational and 18. February purchased for Nankinské air force during the Shanghai incident, short of war on the town between China and Japan. An american instructor Robert Short was asked to deliver a machine to Nanking, 22. February, but got into a fight with three japanese fighters. The two allegedly with Boeing shot down, but then died himself.


Meanwhile, the army air force ordered the serial form of the Model 218 as P-12E (Boeing Model 234), the order for the 135 machines was signed 3. march, 1931. Between 19. September and 15. October 1931 was the army handed over 110 machines, the remaining 25 were completed as P-12F. P-12E used the same poloskořepinový fuselage and new tail surfaces as Model 218, but otherwise match the standard P-12D. When in the course of the services were tail spurs of the replaced wheel. Originally got P-12E air pockets in the upper wing, allowing to keep on the surface in the event of an emergency landing, used on the previous versions, in the course of the services were usually removed and in most of the machines replaced with "panama support", substantially enlarged dorsal hump containing a rubber life raft, developed for deployment in the panama canal zone.


P-12E 31-553 was 1. October 1931 right after the transmission of the converted on the XP-12E and allocated for tests. Similarly originated the P-12j is, which was the P-12E 32-042 equipped with Pratt & Whitney SR-1340H (R-1340-23) on the performance of 429 kW and suicide sight. In this embodiment, the increased height, but the new engine really benefits not brought. The XP-12E, P-12j is and five standard P-12E (32-033, -036, -040, -046, and -049) was later modified to the next experimental version, the YP-12K, with the engines of the SR-1340E and fuel injection Q-2, one of them also flew with the landing gear equipped with skis located next to the rounds. In June 1938, it was all seven of the machines were converted back to standard P-12E. Meanwhile, in February 1937 YP-12K 31-553 the third time renamed, this time to the XP-12L after having been equipped with a turbocharged Type F-7, about a month later, he was but again the YP-12K.


P-12E flew, for example, at the 24., 27., 77., 79. and 95. squadron, remain together with the P-12F in first line service until 1935, when they were replaced by jednoplošnými Boeing the P-26, and then were transferred mainly to the training, in 1941, were the last pieces grounded as dragons for the training of mechanics.


The army in 1940 worked on the adjustment of the discarded P-12E on the radio controlled flying target, denoted by And-5, and one machine was equipped with radio control and tested, the army however next to this task, a decommissioned aircraft stop the use and the project ended. After the entry of the USA into the war, however, was 23 machines of the P-12(P-12C 31-151,- 154,-209,-210, P-12D 31-245 and -258 P-12E 31-561,-564,-576,32-010,- 013,-025,-033,-040,-041,-044,-046,-048, -057, -066,-069,-074 and P-12F 32-85) handed over to the navy, which has implemented its own conversion to a flying target, and without distinction of the original version were all of these machines are renamed to the F4B-4A. Got also new serialy in the range of 2489-2511. Most of it was during the exercise shot down.


One of the P-12E, 32-017, was between machines transmitted as a flightless teaching aid civil aviation schools and from the California polytechnic institute was later do I get a california Ontario Air Museum. In 1961 he was with the civil registration N3360G recognized letuschopným, first flew in the coloration of the navy F4B-3. Today should still be in the possession of the museum in Chino. P-12E 31-559 was similarly acquired by a private owner, who later donated Museum of the US air force on the Wright-Patterson AFB, where it is exposed to the coloring 6. fighter squadrons.


Version E is the only version outside of export, which came to foreign users - in 1935 there were two machines passed to the newly formed philippine air force, where, hopefully, withstand up to cast the Philippines to the Japanese in 1941..
Boeing P-12E - Boeing Model 218, prototyp P-12E, ve své závěrečné podobě. V Číně létal pravděpodobně ve stejném zbarvení, je zmiňováno černé písmeno X na horním křídle.

Boeing Model 218, prototyp P-12E, ve své závěrečné podobě. V Číně létal pravděpodobně ve stejném zbarvení, je zmiňováno černé písmeno X na horním křídle.
URL : https://www.valka.cz/Boeing-P-12E-t81282#412216Version : 0
MOD
The two machines at the beginning of the 30. years ordered the siamese air force for comparison with Bulldogem Mk.II and Heinkelem He 43 D. It was a machine basically identical to the american army P-12E, due to the then government's ban on the export of the aircraft at that time supplied the american forces were "masked" the company designation of Model 100E. In Siam have been sent 10. November 1931, without being assembled and tested at the factory. Siamese air force they allocated the designation Ch7(ข๗, English transcription Kh7), or tank no. 7, and at least one machine survived in service until 1949. Other machines from Boeing Thai people didn't buy, in 1933, were instead purchased a competing Hawks II and later Hawks III. Today the survivors 100E located in the Museum of the Thai royal air force at the airport Don Muang u Bangkok.

Source:
Bowers, Peter M. Boeing Aircraft since 1916. London, Putnam 1989. ISBN 0-85177-804-6.
www.thai-aviation.net
peterlewisdesign.tripod.com
zh.wikipedia.org
.
Boeing P-12E -


URL : https://www.valka.cz/Boeing-P-12E-t81282#420131Version : 0
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P-12E.
Boeing P-12E -


URL : https://www.valka.cz/Boeing-P-12E-t81282#41541Version : 0

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Boeing P-12E - Velitelský stroj 95. Attack Squadron. Původní zbarvení Olive Green na všech plochách bylo na přelomu 20. a 30. let doplněno výraznými žlutými doplňky.

Velitelský stroj 95. Attack Squadron. Původní zbarvení Olive Green na všech plochách bylo na přelomu 20. a 30. let doplněno výraznými žlutými doplňky.
Published with authors permit

Boeing P-12E -


Published with authors permit

URL : https://www.valka.cz/Boeing-P-12E-t81282#396610Version : 0
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