Jet blast deflector

A windbreak (English: blast deflector fence ) is a building on airfields, which serves people, vehicles and objects from the harmful effects of the air jet by jet aircraft ( English: Jet Blast ) or propeller engines (English: Prop Wash) to protect. They also serve to prevent damage to the aircraft, which could be caused by the recirculation of the air jet.

Species

A distinction is made between safety fences made ​​of metal or fiberglass and protective walls made ​​of concrete. Majority of fences are used due to the greater flexibility through its modular structure and due to the lower cost. However, concrete walls can be used at greater speeds of the air jet and require less maintenance.

Execution

Windbreak fences can obscure or - be transparent and perpendicular or obliquely positioned - at least partially. Partially transparent protective fences are often made from slats elements. The blades are aligned so that the air jet of the engines is harmless deflected upwards. Windbreak fences (including those with metal elements ) can be designed so that no interference with radar or other radio signals occur. The length and height of windbreak fences depends on the strength and spread of the air stream of the engines and after the objects to be protected.

Alternatives

Also, natural barriers such as bushes and trees protect them from the negative air beam effects and are also used in practice, especially as distinct from areas outside of flight operations areas. In many cases, natural barriers, however, are no substitute for windbreak fences. You'll have to be maintained landscaped from the requirement of obstacle free entertainment and it is also to be noted that they require a certain amount of time for the volunteers, the windshield may not be given sufficiently in winter due to lack of leaf vegetation.

Others

On aircraft carriers the function of the windbreak fences hinged Gasstrahlabweiser meet (English: Jetblast Deflector ).