An account is given of RAE's comprehensive approach to enhancing the capabilities of fast-jets specifically in the air combat
role by utilising helmet-mounted equipment. Ground rigs, simulators and aircraft were employed in the development of the
devices and their integration with the weapons system. The paper concludes that although ground and simulator trials are a
necessary prelude, airborne assessment is essential. By adopting this comprehensive approach to the problem, RAE have
established a solid founthtion of experience, covering the design, flight clearance and use of these devices.