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Lockheed XF-90

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XF-90

Icon
Totals
6100000 Price
700 Survivability
10376 kgWeight
1231.9 Damage
Speed
2572.8 Airspeed
1150 km/hTop Speed at Sea Level
1150 km/hTop Speed at Best Altitude
3000 mOptimum Altitude
1200 km/hMaximum Dive Speed
178.2 m/sRate of Climb
300 km/hStall Speed
851 km/hOptimum Airspeed
Mobility
79.2 Controllability
17.3 sAverage Time to Turn 360 deg
90 °/sRate of Roll
829.9 Maneuverability
XF-90
X
Lockheed XF-90
6100000
Designed as an air defense penetration fighter. First flew in June 1949. Never entered service.

Tech Tree

Engine
tree_wowp_ico-engine.pngX
0
EngineJ34-WE-15
Specifications:
Engine Power, hp1860
Typejet
Weight, kg1240
Applicability:Lockheed XF-90
tree_wowp_ico-engine.pngX
2xJ34-WE-15
tree_wowp_ico-engine.pngX
0
Engine
Specifications:
Engine Power, hp1860
Typejet
Weight, kg1240
Applicability:Lockheed XF-90
tree_wowp_ico-engine.pngX
2x
Airframe
tree_wowp_ico-planer.pngX
0
AirframeF-90
Specifications:
Survivability700
Weight, kg8596
Applicability:Lockheed XF-90
tree_wowp_ico-planer.pngX
F-90
tree_wowp_ico-planer.pngX
0
Airframe
Specifications:
Survivability700
Weight, kg8596
Applicability:Lockheed XF-90
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Cowling-mounted weapon
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0
Machine gun20 mm Mk.12 (C)
Specifications:
Caliber20
Muzzle Velocity, m/s2080
Damage180
Rate of Fire, rounds/min600
Weight, kg90
tree_wowp_ico-gun.pngX
6x20 mm Mk.12 (C)
tree_wowp_ico-gun.pngX
0
Machine gun
Specifications:
Caliber20
Muzzle Velocity, m/s2080
Damage180
Rate of Fire, rounds/min600
Weight, kg90
Price:
Purchase price80000
Applicability:Lockheed XF-90
tree_wowp_ico-gun.pngX
6x
Outboard weapon
tree_wowp_ico-empty.png
No weapons
tree_wowp_ico-bomb.pngIX
0
Bombs500 lb AN-M64
Specifications:
Damage Radius, m75
Damage5200
Weight, kg225
Price:
Purchase price1500
tree_wowp_ico-bomb.pngIX
2x500 lb AN-M64
tree_wowp_ico-bomb.pngIX
0
Bombs
Specifications:
Damage Radius, m75
Damage5200
Weight, kg225
Price:
Purchase price1500
Applicability:Lockheed XF-90
tree_wowp_ico-bomb.pngIX
2x
tree_wowp_ico-.png
No weapons
tree_wowp_ico-.png
No weapons
tree_wowp_ico-.png
No weapons


Modules

Engine

Engine

Tier Engine Engine Power, hp / Thrust Type Weight, kg Price,
X J34-WE-15 1860 jet 1240 200000
Airframe

Airframe

Tier Airframe Survivability Weight, kg Price,
X F-90 700 8596 240000
Cowling-mounted weapon

Cowling-mounted weapon

Tier Machine gun Caliber Muzzle Velocity, m/s Damage Rate of Fire, rounds/min Weight, kg Price,
X 20 2080 180 600 90 80000
Outboard weapon

Outboard weapon

Tier Bombs Damage Radius, m Damage Weight, kg Price,
IX 500 lb AN-M64 75 5200 225 1500


Compatible Equipment

Compatible Consumables


Historical Info

Summary :


Design by Lockheed in 1945 in response to the USAF request for a long-range penetration fighter as well as doubling as a Bomber escort, the XF-90 competed with the Mcdonnell XF-88 for the contract. Despite possessing supersonic capabilities (though it can only reach said speed in a dive), being the first USAF jet with an afterburner, utilizing 75ST aluminum instead of the standard 24ST aluminum alloy, and possessing an extremely well-constructed and sturdy airframe the XF-90 lost to the XF-88, which later became the F-101 Voodoo due to being incredibly underpowered. Only two aircraft where produce; the XF-90 (46-0687) and XF-90A(46-0688).


Powerplant Hijinks:

One of the main reasons for its failure to meet the USAF requirements was due to being underpowered when compared to the XF-88. While the XF-90 was a much heavier aircraft than the XF-88, the main cause of its underpowered nature was actually not the aircraft weight, rather it was caused by Lockheed changing the powerplant it was going to possess during its development multiple times. Initially, the powerplant was going to be a single Lockheed L-1000 Turbojet(Lockheed J-37), which produced about 6,700 lbf of thrust at take off, however, Lockheed decided to change the powerplant to a single General Electric J35(Allison J35), which depending on the variant Lockheed picked, could produce about 3,820-7,200 lbf of thrust before finally settling on twin Westinghouse J34-WE-15 turbojets which produce a total thrust of 8,200 lbf giving the aircraft a thrust to weight ratio of 0.30.

Strangely, when Lockheed picked the J34-WE-15 as the powerplant of the XF-90, afterburners were not initially used, but it was quickly discovered that by not including afterburners, the XF-90 lacked the thrust for RATO (rocket-assisted takeoff) as RATO capabilities were required for most of the first flights of any jet-powered military aircraft unless the aircraft carried a very low fuel load, so in response, Lockheed added afterburners, but despite the addition of afterburners it was still not enough to fix the underpowered nature of the aircraft.

Historical Specifications:

General characteristics:

Crew: one

Length: 56 ft 2 in (17.12 m)

Wingspan: 40 ft 0 in (12.20 m)

Height: 15 ft 9 in (4.80 m)

Empty weight: 18,050 lb (8,204 kg)

Loaded weight: 27,200 lb (12,363 kg)

Max. takeoff weight: 31,060 lb (14,118 kg)

Powerplant: 2 × Westinghouse J34-WE-15 turbojets, 4,100 lbf each

Maximum speed: 665 mph (1,064 km/h)

Range: 2,300 mi (3,680 km)

Service ceiling: 39,000 ft (11,890 m)

Rate of climb: 5,555 ft/min (28.2 m/s)

Thrust/weight: 0.30

Armament:

6 × 20 mm (.79 in) cannons, 8 × 5 in (127 mm) HVAR rockets and up to 2,000 lb (907 kg) of bombs

Historical inaccuracies:

  • one of its historical weapons, the 8 × 5 in (127 mm) HVAR rockets are missing
  • the XF-90 was designed to be a Penetration Fighter as well as being a bomber escort, it was never designed to be a Heavy Fighter


Sources and External Links