Thus the equation becomes:Īs both m and Vi are constants (i.e. In a crash situation the initial velocity (Vi) is whatever speed the pilots head is moving at. Hence by combining these two equations we can write: The force applied to an object can be calculated from the equation :į = m.a where F = force, m = mass, a = accelerationĪs acceleration is the rate of change of velocity we can write:Ī = (Vf – Vi) / t where Vi = initial velocity, Vf = final velocity, and t = time A helmet reduces the peak force applied to the head in a sharp impact. The way to prevent the injury is to bring the head (and the brain) to a more gradual stop. Head injuries aren’t caused by speed, but by the sudden stop when our head hits a hard surface. Use your superior judgement to avoid situations where you will have to use your superior skills and perhaps your superior helmet. Therefore, injury, death and permanent impairment may occur in accidents which exceed the protective capability of any helmet. No helmet can protect the wearer against all foreseeable accidents. Although helmet use has been shown to reduce head injuries significantly, there are limits to a helmet’s protective capability. Exact figures are not available for hang gliding however research shows that ~90 per cent of cyclists’ brain injuries can be prevented by a properly fitted bicycle helmet. Gravel rash and broken bones heal brains often do not. Even a low-speed crash can scramble your brains.

The purpose of this article is to provide a guide on how helmets work and what to look for when choosing one. Helmets on the market today offer varying degrees of protection.

In a recreational activity like hang gliding, there are significant risks of injury or death.

Hang glider helmet