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United States Lockheed Martin
F-35B Lightning II
Short take-off and vertical landing (STOVL) variant of the F-35 family, using a shaft-driven lift fan to operate from amphibious assault ships and short runways. Flown by the US Marine Corps, UK, Italy and Japan.
In service since 2015 · 7 operator countries
Compiled from public sources ·primary reference ↗ ·last verified 2026-07-02
1,930
km/h
2,220
km range
15,240
m ceiling
6,800
kg payload
0.94
T/W
💲 ≈ $109,000,000 — Lot 15-17 flyaway cost, F-35B
Procurement snapshot
Availability & export
US ITAR-controlled
Export needs U.S. State Dept (DDTC) approval; end-use & re-transfer restrictions apply.
Channel: Foreign Military Sales (FMS) or Direct Commercial Sale
Fielded & proven
Established · 7 operators
In service since 2015. Status: active · ~550 built.
Lifecycle cost (est.)
$273M – $382M
Acquisition is only ~30% of lifecycle cost — operating & support dominate over ~30 yrs. Rough 2.5–3.5× the unit price.
Interoperability
Derived guidance from public data — export regime by country of origin, lifecycle from the GAO ~30% acquisition rule. Verify eligibility, pricing and offsets with the manufacturer and your acquisition authority.
Full specifications
Performance
Speed, range, altitude and engagement capability.
- Max speed
Maximum level speed. For aircraft this is at optimal altitude; for ground vehicles, top road speed. Higher means faster response and better kinematic performance.
- 1,930 km/h Stronger than 32% of fighters
- Max speed (Mach)
Maximum speed as a multiple of the speed of sound. Mach 2+ is typical for air-superiority fighters.
- 1.6 Mach Stronger than 13% of fighters
- Range
Maximum distance: ferry range for aircraft, operational range for vehicles, maximum engagement distance for missiles. Higher means more standoff or persistence.
- 2,220 km Stronger than 25% of fighters
- Combat radius
Distance an aircraft can fly, complete its mission and return without refueling. Roughly a third of ferry range.
- 900 km Stronger than 49% of fighters
- Service ceiling
Maximum operating altitude. Higher gives energy advantage and sensor horizon.
- 15,240 m Stronger than 32% of fighters
- Thrust-to-weight
Engine thrust divided by loaded weight. Above 1.0 the aircraft can accelerate going straight up.
- 0.94 Stronger than 28% of fighters
Firepower
Armament, payload and guidance.
- Main armament
Primary weapon: main gun, cannon or missile type.
- 25 mm GAU-22/A cannon (external gun pod)
- Hardpoints
External stations for weapons and pods. More means bigger and more flexible loadouts.
- 8 Stronger than 31% of fighters
- Weapons payload
Maximum ordnance weight the platform can carry. Higher means more strike capacity per sortie.
- 6,800 kg Stronger than 44% of fighters
Protection
Armor, countermeasures and survivability.
- Countermeasures
Self-protection: chaff, flares, DIRCM, towed decoys, smoke dischargers, jammers.
- AN/ASQ-239 Barracuda EW suite, chaff, flares
- Signature reduction
Radar cross-section shaping, RAM coatings, IR suppression. Actual RCS values are classified.
- Very low observable airframe shaping with fiber-mat RAM; internal weapons bays
Physical
Dimensions, weight and crew.
- Length
Overall length including gun/probe where applicable.
- 15.67 m
- Wingspan
Wingtip-to-wingtip span.
- 10.7 m
- Height
Overall height. Lower profile is harder to spot and hit for ground vehicles.
- 4.36 m
- Empty weight
Weight without fuel, ammunition or crew.
- 14,650 kg
- Combat weight
Fully loaded weight. Lighter eases transport and bridging limits; heavier often means more armor.
- 22,700 kg
- Crew
Personnel required to operate. Fewer reduces exposure; autoloaders trade a loader for mechanical complexity.
- 1
Propulsion
Engine, power and fuel.
- Engine
Powerplant model and type.
- Pratt & Whitney F135-PW-600 afterburning turbofan with lift fan
- Engines
Number of engines. Twin-engine gives redundancy at higher cost.
- 1
- Thrust
Total engine thrust (with afterburner where applicable).
- 178 kN Top 5% of fighters
- Fuel capacity
Internal fuel volume.
- 6,032 L
- Propulsion type
Turbofan, turboshaft, diesel, gas turbine, solid-fuel rocket, ramjet…
- Turbofan (STOVL, shaft-driven lift fan)
Sensors & avionics
Radar, sensor suite and datalinks.
- Radar
Primary radar. AESA (active electronically scanned array) is the current state of the art.
- AN/APG-81 AESA
- Sensors
IRST, EO/IR turrets, laser designators, sniper pods, thermal sights.
- AN/AAQ-40 EOTS, AN/AAQ-37 DAS 360° IR, helmet-mounted display
- Datalink
Network connectivity: Link 16, MADL, national datalinks. Enables cooperative engagement.
- MADL, Link 16
Program
Cost, production scale and operators.
- Unit cost
Approximate flyaway/unit cost where public. Defense pricing varies hugely by contract, offsets and configuration. Lower is cheaper.
- $109,000,000 Stronger than 17% of fighters
- Units built
Total production run. Higher means proven manufacturing, mature logistics and spares availability.
- 550 Stronger than 74% of fighters
- Operator countries
Number of countries operating the system. More operators means broader support ecosystem.
- 7 Stronger than 82% of fighters
Specifications compiled from public Lockheed Martin and reference sources ↗. Published defense figures are approximations — treat comparisons as directional. Last verified 2026-07-02.
Compare with rivals
See how it stacks up
Dassault Aviation Rafale F4 Frequently asked questions
What is the top speed of the Lockheed Martin F-35B Lightning II? +
The Lockheed Martin F-35B Lightning II has a maximum speed of 1,930 km/h.
What is the range of the Lockheed Martin F-35B Lightning II? +
The Lockheed Martin F-35B Lightning II has a maximum range of 2,220 km.
What is the weapons payload of the Lockheed Martin F-35B Lightning II? +
The Lockheed Martin F-35B Lightning II can carry up to 6,800 kg of weapons payload.
How much does the Lockheed Martin F-35B Lightning II weigh? +
The Lockheed Martin F-35B Lightning II has a combat weight of 22,700 kg.
How many crew does the Lockheed Martin F-35B Lightning II require? +
The Lockheed Martin F-35B Lightning II requires a crew of 1.
What is the main armament of the Lockheed Martin F-35B Lightning II? +
The Lockheed Martin F-35B Lightning II's primary weapon is the 25 mm GAU-22/A cannon (external gun pod).
What engine does the Lockheed Martin F-35B Lightning II use? +
The Lockheed Martin F-35B Lightning II is powered by the Pratt & Whitney F135-PW-600 afterburning turbofan with lift fan.
What is the Lockheed Martin F-35B Lightning II used for? +
The Lockheed Martin F-35B Lightning II is a fighter aircraft typically used for multirole combat, air superiority, close air support, isr.
How many countries operate the Lockheed Martin F-35B Lightning II? +
The Lockheed Martin F-35B Lightning II is operated by 7 countries.
How much does the Lockheed Martin F-35B Lightning II cost? +
The Lockheed Martin F-35B Lightning II has an approximate unit cost of 109,000,000 USD. Defense pricing varies by contract, offsets and configuration — treat this as directional.
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