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Rafael Advanced Defense Systems

Derby

An Israeli active-radar-homing, beyond-visual-range air-to-air missile that also doubles as a surface-launched interceptor in the SPYDER air-defense system. It gives Rafael customers a fire-and-forget BVR option independent of US or European suppliers.

In service since 1998

Compiled from public sources ·primary reference ↗ ·last verified 2026-07-02

65

km range

4

Mach

118

kg warhead

Pricing: Unit cost not publicly disclosed

Procurement snapshot

Availability & export

Israeli export-licensed

Israeli MoD (DECA/SIBAT) licensing; active export programme.

Channel: Direct commercial / G2G

Fielded & proven

Operator data not public

In service since 1998. Status: active.

Lifecycle cost (est.)

No public unit price to model from. Why so few systems publish one →

Interoperability

No standardised NATO calibre / datalink detected in public specs.

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.

Performance specifications
Max speed (Mach)

Maximum speed as a multiple of the speed of sound. Mach 2+ is typical for air-superiority fighters.

4 Mach
Stronger than 74% of missiles
Range

Maximum distance: ferry range for aircraft, operational range for vehicles, maximum engagement distance for missiles. Higher means more standoff or persistence.

65 km
Stronger than 40% of missiles

Firepower

Armament, payload and guidance.

Firepower specifications
Warhead

Warhead mass. Heavier generally means larger effect radius, at the cost of range.

118 kg
Stronger than 48% of missiles
Warhead type

Blast-fragmentation, shaped charge (HEAT), penetrator, thermobaric or nuclear-capable.

Blast-fragmentation, proximity fuze
Guidance

How the weapon finds its target: inertial, GPS/GLONASS, active/semi-active radar, infrared, laser, TV, wire.

Active radar homing, Inertial navigation with mid-course update

Physical

Dimensions, weight and crew.

Physical specifications
Length

Overall length including gun/probe where applicable.

3.6 m
Combat weight

Fully loaded weight. Lighter eases transport and bridging limits; heavier often means more armor.

118 kg

Propulsion

Engine, power and fuel.

Propulsion specifications
Propulsion type

Turbofan, turboshaft, diesel, gas turbine, solid-fuel rocket, ramjet…

Solid-fuel rocket

Specifications compiled from public Rafael Advanced Defense Systems and reference sources ↗. Published defense figures are approximations, treat comparisons as directional. Last verified 2026-07-02.

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Frequently asked questions

What is the range of the Rafael Advanced Defense Systems Derby? +

The Rafael Advanced Defense Systems Derby has a maximum range of 65 km.

How much does the Rafael Advanced Defense Systems Derby weigh? +

The Rafael Advanced Defense Systems Derby has a combat weight of 118 kg.

What is the Rafael Advanced Defense Systems Derby used for? +

The Rafael Advanced Defense Systems Derby is a missile typically used for air superiority.

How much does the Rafael Advanced Defense Systems Derby cost? +

Rafael Advanced Defense Systems Derby: Unit cost not publicly disclosed. Defense program costs are rarely fully public and vary by contract and configuration.

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