A range of helmets from Helmet Integrated Systems Design are used for the military applications. It can be divided as civilian helicopter aircrew, military helicopter aircrew, military fastjet aircrew and the military fire fighting. Alpha series of helmet systems are widely used for these applications.
The alpha 200 series is recognised for its innovative modular design and the use in non-ejection seat aircraft, helicopters and fixed wing. The alpha 400 series provide fast and accurate fitting to different head sizes and is used by the passengers and occasional users.
The alpha eagle series is preferred for its lightweight specification and has a wide usage in forestry, crop spraying, emergency services and police air support. Alpha rescuer series is widely useful in air and sea rescue operations.
The noise pollution that occurs while communicating in the aircraft can be avoided by the use of alpha ANR headsets and helmet systems.
Alpha 700 series is a lightweight helmet which has a wide usage in fast-jet ejection seat aircraft. Alpha HGU 86/P is incorporated with MBU-22/P oxygen mask.
Cromwell ECHO is widely used by the military firefighting people. This helmet is incorporated with a cordless radio that allows multi way communications.