How prevalent are anti-explosion bladders in fuel tanks?

2018-03-21 16:38:30

Some aircraft fuel tanks are fitted or retro-fitted with internal bladders, to prevent fuel evaporating inside the tank. I've heard of this being a requirement for at least one type, perhaps because of a poor fuel tank design, but how commonplace is it? How many aircraft have these bladders?

According to this wikipedia article :

Most jet fighters and all US military rotary wing aircraft have some type of self-sealing tanks. Military rotary wing fuel tanks have the

additional feature of being crashworthy. High altitudes require the

tanks to be pressurized, making self-sealing difficult. Newer

technologies have brought advances like inert foam-filled tanks to

prevent detonation. This foam is an open cell foam that effectively

divides the gas space above the remaining fuel into thousands of small

spaces, none of which contain sufficient vapour to support combustion.

This foam also serves to reduce fuel slosh. Major manufacturers of

this technology i

  • According to this wikipedia article :

    Most jet fighters and all US military rotary wing aircraft have some type of self-sealing tanks. Military rotary wing fuel tanks have the

    additional feature of being crashworthy. High altitudes require the

    tanks to be pressurized, making self-sealing difficult. Newer

    technologies have brought advances like inert foam-filled tanks to

    prevent detonation. This foam is an open cell foam that effectively

    divides the gas space above the remaining fuel into thousands of small

    spaces, none of which contain sufficient vapour to support combustion.

    This foam also serves to reduce fuel slosh. Major manufacturers of

    this technology include Hutchinson, Amfuel (Zodiac) (formerly

    Firestone), Meggitt (formerly Goodyear), Robertson Fuel Systems, GKN

    USA and FPT Industries. FPT is now part of GKN. For military use,

    tanks are qualified to MIL-DTL-27422 (includes crashworthiness

    requirements) or MIL-DTL-5578 (non-crashworthy). An aircraft

    2018-03-21 17:20:39
  • VERY i was rear ended 82 mph burnt 51% an 6th degree 44 operations 2.5 million med, bill plz make a change asap b4 anyone dies

    ty ! ce powell

    2018-03-21 17:48:37