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Boeing F4B-4

Boeing F4B-4

     
Název:
Name:
Boeing F4B-4
Originální název:
Original Name:
Boeing F4B-4
Kategorie:
Category:
stíhací letoun
Výrobce:
Producer:
DD.07.1932-DD.02.1933 Boeing Aircraft Division, United Aircraft & Transport Corp., Seattle, Washington
Období výroby:
Production Period:
DD.07.1932-DD.02.1933
Vyrobeno kusů:
Number of Produced:
93
První vzlet:
Maiden Flight:
DD.MM.RRRR
Osádka:
Crew:
1
Základní charakteristika:
Basic Characteristics:
 
Vzlet a přistání:
Take-off and Landing:
CTOBAR - standardní vzlet, přistání s pomocí brzdících lan
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:
1049 kg
Vzletová hmotnost:
Take-off Weight:
1400 kg
Maximální vzletová hmotnost:
Maximum Take-off Weight:
? kg
Rozpětí:
Wingspan:
9.14 m
Délka:
Length:
6.22 m
Výška:
Height:
2.97 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-1340D Wasp o výkonu 373 kW
dvoulistá kovová vrtule
Objem palivových nádrží:
Fuel Tank Capacity:
208-416 l
Výkony:
Performance:
 
Maximální rychlost:
Maximum Speed:
296 km/h v 1829 m
Cestovní rychlost:
Cruise Speed:
257 km/h v ? m
Rychlost stoupání:
Climb Rate:
? m/s
Čas výstupu na výšku:
Time to Climb to:
? min do ? m
Operační dostup:
Service Ceiling:
7559 m
Dolet:
Range:
941 km
Maximální dolet:
Maximum Range:
1131 km
Výzbroj:
Armament:
2x pevný synchronizovaný 7,62mm kulomet Browning nebo
1x 7,92mm a 1x 12,7mm kulomet Browning

2x 53kg bomba
Uživatelské státy:
User States:
Poznámka:
Note:
-
Zdroje:
Sources:
Davis, Larry. P-12/F4B in Action, In Action No.141. Squadron/Signal Publications, Carrollton 1994. ISBN 0-89747-309-4.
Bowers, Peter M. The Boeing F4B-4, Profile No.27, Profile Publications, Leatherhead.
Bowers, Peter M. The Boeing P-12E, Profile No.2. Profile Publications, Leatherhead.
Bowers, Peter M. Boeing Aircraft since 1916. Putnam Aeronautical Books, London 1989. ISBN 0-85177-804-6.
Swanborough, F. G., Bowers, P. M. US Navy Aircraft Since 1911, Putnam Aeronautical Books, London 1990. ISBN 0-85177-838-0.
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.
http://www.aerofiles.com/_boe2.html
URL : https://www.valka.cz/Boeing-F4B-4-t81223#41536Version : 0
After the delivery of the 21st unit, the Boeing F4B-3 was replaced in production by the F4B-4 version, which differed by an enlarged rudder and wings with a higher area load, but retained the company's Model 234 designation.


However, the first of these was not delivered until 21 June 1932, as the Navy allowed 14 of the order's machines to be removed and converted to the export Model 256 for Brazil. Machines A8912/8920 and A9009/9053 were completed as F4B-4s, and 14 new replacement machines were built along with a second order for 38 9226/9263s (the A prefix was dropped at that time), the last of which was delivered on 28 February 1933. These last 52 machines (14 spares + 38 second orders]) differed from the previous ones by an improved radio, additional night lighting and the replacement of the hitherto separate exhausts by a header pipe on the trailing edge of the cover ring; the last 45 also had an enlarged dorsal hump, following the example of the "Panama" P-12E, to allow the accommodation of an inflatable dinghy.


70 F4B-4s were turned over to the Navy, the remaining 21 to the Marine Corps, and by July 1932 they were with VMF-10 squadron in San Diego, later with VMF-9 in Quantico. The Marine Corps also built the last one, the 92nd, F4B-4 9719, from spare parts. The Marine Corps machines flew from ground bases, so they usually had their landing hooks removed.


The first Navy squadrons armed with F4B-4s were the VF-3B on the USS Langley and the VF-6B on the USS Saratoga, both of which received their machines in November 1932. In 1934, they also went to VB-5, then on USS Ranger, and briefly to VF-2B, and by the spring of 1935, VF-1B was also in use.


During 1937/38, F4B-3 began to be withdrawn from the front line, where they were replaced by new Grumman F2FF3F for a time, serving as reserves and for advanced training. They were gradually assigned to flight schools or as personal "staff" aircraft, with a brief return to prominence in 1941. After Pearl Harbor, with modern types with units overseas, various obsolete and retired types were temporarily transferred to service with squadrons dedicated to the defense of the parent United States. Very soon, however, their fate was sealed, and by 1942 most of them had already been destroyed after conversion to radio-controlled targets for anti-aircraft batteries. A mixture of Army P-12 (4 P-12C, 2 P-12D, 16 P-12E and one P-12F) also shared this fate - the Navy took them over in 1940 as the F4B-4A (A as Army).


Two machines, 9241 and 9251, survived the war and were turned over to the Bureau of Aeronautical Commerce by the disarmed Marines in 1940. Both machines were soon sold to demonstration pilot Jesse Bristow, who flew them until 1947. 9251 Bristow then extensively rebuilt the Wasp's 447 kW engine bay with an adjustable propeller, new I-shaped struts and new landing gear. He even fitted the hull with mounts for two JATO auxiliary launchers. He sold this F4B-4 and the new owner destroyed it in an accident in 1948. The second machine also changed hands, flew as a powder-coater for a time, and was donated to the National Air Museum in 1960. As the 50th anniversary of US Naval Aviation and Armed Forces Day approached, it was promptly repaired at the former Naval Aircraft Factory in Philadelphia and put on display as a non-flying exhibit. Only the camouflage was mistakenly chosen to be based on the F4B-3 squadron's VF-1B, only later was it given its original livery worn by Marine VMF-9, and it is now on display at the National Air and Space Museum.
Boeing F4B-4 - První sériový F4B-4

První sériový F4B-4
URL : https://www.valka.cz/Boeing-F4B-4-t81223#416620Version : 0
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Source:
http://www.airminded.net/F4b/BoeF4b.html

Boeing F4B-4 -


URL : https://www.valka.cz/Boeing-F4B-4-t81223#297868Version : 0
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