The GAF Jindivik is a remotely controlled target, designed and produced by the Government Aircraft Factory (GAF). The name is from the Aboriginal language, meaning “the hunted one”. Used extensively in Australia, the United Kingdom and in small numbers by Sweden and the United States, the Jindivik served initially as a target, but later was employed as a target tug.

We are developing the model to be used as a slope soarer or small EDF. Currently, we are still working on the design, but hope to have it ready for distribution soon. Email us for information.

GAF Jindivik – Design, Development, Production and Performance

The Government Aircraft Factories (GAF) Jindivik was one of Australia’s greatest aerospace engineering achievements and one of the world’s most successful early unmanned aircraft. Developed from the late 1940s as a pilotless, radio-controlled jet target drone, it was designed to support guided missile development and weapons training. Although originally intended as an expendable target, the Jindivik proved so reliable and recoverable that individual aircraft routinely flew many missions before retirement.

The Jindivik served with the Royal Australian Air Force (RAAF), Royal Australian Navy (RAN), Royal Air Force (RAF), the United States Navy, and the Swedish Air Force. Production extended from 1952 until 1986, with a final batch built in 1997, making it one of Australia’s longest-lived military aircraft programmes. Between 502 and 517 aircraft were produced, depending on whether prototypes and the final production batch are included.

Origins

In 1948, Australia and the United Kingdom agreed to cooperate in the development and testing of guided weapons. Britain would provide missile technology while Australia would provide the extensive test facilities at the Woomera Rocket Range in South Australia.

Britain’s Ministry of Supply issued Specification E.7/48, calling for a pilotless aircraft capable of:

a 15-minute mission
operation to 40,000 ft
high subsonic speed
repeated recoverable flights
radio control from the ground

Responsibility for the aircraft fell to the Government Aircraft Factories (GAF) at Fishermans Bend, Melbourne, under chief designer Ian Fleming (not the novelist), working closely with the Aeronautical Research Laboratory and the Long Range Weapons Establishment.

Development

The Pika

Before producing an unmanned aircraft, GAF built two manned proof-of-concept aircraft known as the Pika (“flier”).

The Pika allowed engineers to evaluate:

aerodynamic characteristics
engine installation
control response
structural behaviour
radio-control concepts

Unlike the production Jindivik, the Pika featured:

a cockpit
retractable landing gear
side-mounted engine air intakes

The first Pika flew in 1950, successfully validating the design.

Jindivik Mk.1

The first unmanned Jindivik flew on 28 August 1952 at Woomera.

Major changes from the Pika included:

removal of the cockpit
dorsal engine intake
landing skid replacing wheels
autonomous autopilot
radio-command guidance

The Mk.1 was powered by an Armstrong Siddeley Adder turbojet, but only 14 aircraft were built before a more powerful engine became available.

Design Philosophy

The aircraft was designed around several requirements:

extremely high reliability
repeated recoverable operation
accurate flight path control
low operating cost
high-speed target simulation
ease of maintenance

Unlike modern UAVs, the Jindivik carried no onboard pilot or autonomous mission computer. Instead, it relied on a sophisticated autopilot that received commands from operators on the ground.

Airframe Design

Wing

The Jindivik employed a cantilever low wing.

Characteristics included:

all-metal stressed-skin construction
swept leading edge
relatively thin aerofoil
short span for high-speed operation

The wing was optimised for:

subsonic flight
stability
high manoeuvrability
operation from sea level to very high altitude

Wingtip shoes protected the structure during skid landings.

Fuselage

The fuselage was an all-metal semi-monocoque structure incorporating:

streamlined nose
equipment bay
autopilot
radio receiver
fuel tanks
turbojet engine

The dorsal engine intake reduced the risk of foreign-object ingestion during launch and skid recovery.

Guidance and Control

One of the Jindivik’s greatest innovations was its radio-command guidance system.

Unlike direct manual remote control, operators transmitted commands to an onboard autopilot, which interpreted and executed manoeuvres.

Capabilities included:

heading changes
altitude changes
speed control
climb and descent
automatic flight stabilisation

The system accepted 18 primary flight commands plus additional commands for onboard equipment such as smoke generators and countermeasure devices.

Launch System

The Jindivik did not use conventional landing gear.

Instead it was launched from a reusable self-steering trolley.

The launch sequence was:

Engine accelerated to full thrust.
Aircraft accelerated along the runway on the trolley.
At approximately 110 kt, the autopilot selected take-off flap and rotated the aircraft.
The drone separated from the trolley and climbed away.

This eliminated the weight and complexity of retractable or fixed landing gear.

Recovery System

Recovery was equally innovative.

The aircraft approached under radio control before touching down on a centreline skid.

Directional control after touchdown relied on:

wingtip skid shoes
aerodynamic control surfaces
careful guidance from two ground controllers monitoring azimuth and elevation

This system proved remarkably successful and enabled repeated reuse of each aircraft.

Powerplant Development

Mk.1

Armstrong Siddeley Adder ASA.1
Disposable turbojet
Approximately 1,050 lbf thrust

Mk.2 onwards

Armstrong Siddeley Viper
Approximately 1,640 lbf thrust

Later versions

Bristol Siddeley/Rolls-Royce Viper 201
2,500 lbf thrust

The Viper dramatically improved:

climb performance
reliability
altitude capability
maximum speed

Although originally designed for only around 10 hours of operation, later versions achieved substantially longer service lives.

Variants

Major production variants included:

Mk.1 – Adder-powered initial production
Mk.2 – Viper-powered production model
Mk.2A – Improved intake and wider wings
Mk.2B – Main production version
Mk.3A – Higher-altitude capability
Mk.3B – Standard late-production model
Mk.102/103 – RAF versions
Mk.203 – Royal Australian Navy versions
Mk.303 – United States Navy export version

Each successive version incorporated improvements in engines, avionics and mission equipment.

Operational Equipment

Depending upon mission, the Jindivik could carry:

smoke generators
infrared decoys
radar reflectors
electronic countermeasure pods
target-towing equipment
flare dispensers
telemetry systems
camera systems

These enabled it to simulate enemy aircraft and missiles during realistic training exercises.

Production

Manufacturer

Government Aircraft Factories (GAF)

Location

Fishermans Bend, Victoria, Australia

Production timeline:

Design commenced: 1948
First flight: 1952
Main production: 1952–1986
Final production batch: 1997

Production totals are commonly quoted as:

502 aircraft built during the original production run
517 aircraft including the final batch produced in 1997

Examples supplied to the United Kingdom were shipped as subassemblies and completed by Fairey Aviation before entering RAF service.

Specifications (Jindivik Mk.3B)

Item	Specification
Crew	None (pilotless)
Length	8.15 m (26 ft 9 in)
Wingspan	6.32 m (20 ft 9 in)
Height	2.08 m (6 ft 10 in)
Wing Area	7.06 m² (76 sq ft)
Empty Weight	1,315 kg (2,900 lb)
Maximum Take-off Weight	1,655 kg (3,650 lb)
Engine	Rolls-Royce/Bristol Siddeley Viper 201 turbojet
Thrust	2,500 lbf (11.1 kN)

Performance

Performance	Value
Maximum Speed	490 kt (908 km/h; Mach 0.85–0.86)
Service Ceiling	57,000 ft (17,375 m)
Range	540–670 NM (1,000–1,240 km), depending on variant
Launch Speed	Approximately 110 kt
Landing Speed	125–150 kt

Operational Service

The Jindivik entered RAAF service in 1953 and was soon adopted by the RAF for missile development and weapons training. It became a mainstay at the Woomera Test Range and later at the Jervis Bay Range Facility, where it was used extensively by the RAN for testing systems such as the Seacat, Tartar, and Sidewinder missiles.

Because of its high reliability, it evolved from being merely a target into a sophisticated threat simulator capable of towing targets, deploying decoys, trailing smoke, and emulating anti-ship missiles. Its versatility and durability allowed it to remain in service until 1998, when it was replaced by the BAE Kalkara target drone.

Legacy

The GAF Jindivik was one of Australia’s most successful aerospace exports and an early pioneer of unmanned aviation. Its robust airframe, advanced radio-command guidance system, recoverable launch-and-skid landing arrangement, and impressive jet performance made it decades ahead of its time. Over a service life spanning almost half a century, it played a critical role in the development of missile systems for Australia, the United Kingdom, the United States, and Sweden. Today, the Jindivik is recognised as a landmark achievement in Australian aerospace engineering and an important precursor to modern unmanned aerial vehicles (UAVs).