Grumman XF4F-5

     
Název:
Name:
Grumman XF4F-5 Grumman XF4F-5
Originální název:
Original Name:
Grumman XF4F-5
Kategorie:
Category:
experimentální letoun experimental aeroplane
Výrobce:
Producer:
DD.MM.1940-DD.MM.1940 Grumman Aircraft Engineering Corp., Bethpage, New York
Období výroby:
Production Period:
DD.MM.1940-DD.MM.1940
Vyrobeno kusů:
Number of Produced:
2 (1846, 1847)
První vzlet:
Maiden Flight:
DD.06.1940
Osádka:
Crew:
1
Základní charakteristika:
Basic Characteristics:
 
Vzlet a přistání:
Take-off and Landing:
CTOBAR - standardní vzlet, přistání s pomocí brzdících lan CTOBAR - conventional take-off but arested recovery
Uspořádání křídla:
Arrangement of Wing:
jednoplošník monoplane
Uspořádání letounu:
Aircraft Concept:
klasické conventional
Podvozek:
Undercarriage:
zatahovací retractable
Přistávací zařízení:
Landing Gear:
kola wheels
Technické údaje:
Technical Data:
 
Hmotnost prázdného letounu:
Empty Weight:
2242 kg 4942 lb
Vzletová hmotnost:
Take-off Weight:
2782 kg 6134 lb
Maximální vzletová hmotnost:
Maximum Take-off Weight:
3044 kg 6711 lb
Rozpětí:
Wingspan:
11.58 m 38ft
Délka:
Length:
8.79 m 28ft 10in
Výška:
Height:
3.61 m 11ft 10in
Plocha křídla:
Wing Area:
24.15 m2 260 ft2
Plošné zatížení:
Wing Loading:
? kg/m2 ? lb/ft2
Pohon:
Propulsion:
 
Kategorie:
Category:
pístový piston
Počet motorů:
Number of Engines:
1
Typ:
Type:
Wright R-1820-40 o vzletovém výkonu 895 kW,
třílistá vrtule s konstantní rychlostí otáček vrtule Hamilton Standard
Pratt & Whitney R-1830-66, take-off power 1200 hp
three-bladed Hamilton Standard constant-speed propeller
Objem palivových nádrží:
Fuel Tank Capacity:
606 l 160 US gal
Výkony:
Performance:
 
Maximální rychlost:
Maximum Speed:
492.5 km/h v 4542 m 306 mph in 14900 ft
Cestovní rychlost:
Cruise Speed:
238.2 km/h v ? m 148 mph in ? ft
Rychlost stoupání:
Climb Rate:
11.4 m/s 2240 ft/min
Čas výstupu na výšku:
Time to Climb to:
? min do ? m ? min to ? ft
Operační dostup:
Service Ceiling:
10363 m 34000 ft
Dolet:
Range:
1464.5 km 910 mi
Maximální dolet:
Maximum Range:
2011.7 km 1250 mi
Výzbroj:
Armament:
- -
Uživatelské státy:
User States:
Poznámka:
Note:
- -
Zdroje:
Sources:
Jarski, Adam: F4F Wildcat, Monografie Lotnicze 20. Gdaňsk, AJ-Press 1995. ISBN 83-86208-29-5
Linn, Don. F4F Wildcat in action, Aircraft Number 84. Carrollton, Squadron/Signal Publications 1988. ISBN 0-89747-200-4
http://www.americancombatplanes.com/f4f_1.html
www.aero-web.org
http://www.aerofiles.com/_grum.html
URL : https://www.valka.cz/Grumman-XF4F-5-t80911#296330 Version : 0
The beginning of the aircraft's series production F4F-3 was accompanied by problems with the P&W R-1830-76 engine with a two-stage compressor. Therefore, the US Navy tried to prepare a solution in which the machines would be usable with a different engine. In April 1940, it was decided that the 3 and 4 series aircraft F4F-3 (BuNo 1846 and 1847) would not be equipped with the R-1830-76 engine, but with the Wright R-1820-40 engine. The prototypes were flown in June 1940 and given the designation XF4F-5. In July, they were moved to Anacostia Air Force Base, where they were subjected to intensive testing that took place throughout the summer. The aircraft reached a top speed of 492 km/h at an altitude of 4572 m, but further development was halted as Pratt & Whitney corrected a fault with its R-1830-76 engine.


In the winter of 1942-1943, both aircraft were modified by fitting new engines for comparative flight tests. The 1846 was equipped with the Wright R-1820-54 turbocharged engine, the 1847 with the Wright XR-1820-48 two-stage supercharged engine. After the engines were installed, the aircraft reached nearly their maximum takeoff weight (the 1846 reached a weight of 3,213 kg and the 1847 a weight of 3,080 kg).


After modification, the 1846 reached a maximum speed of 547 km/h at 8046 m and the 1847 a speed of 508 km/h at 5882 m (using normal engine mode). Speeds when using "combat mode" were slightly higher.


Source: The Grumman F4F-3 Wildcat, Profile Publication Number 53, London
URL : https://www.valka.cz/Grumman-XF4F-5-t80911#296477 Version : 0
www.angelfire.com
.
Grumman XF4F-5 -


URL : https://www.valka.cz/Grumman-XF4F-5-t80911#488139 Version : 0
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