Dan wrote:
David E. Powell wrote:
On Dec 9, 11:22 pm, Mike wrote:
StrategyPage.com
December 2, 2009

The Melting Deck Plates Muddle

by James Dunnigan

Earlier this year, the U.S. Navy discovered that the heat from the
MV-22's gas turbine engines, which blow their exhaust right on to the
deck of the LHD while waiting to take off, caused high enough
temperatures to the steel under the deck plates, to possibly warp the
understructure. This was already a known potential problem with the
new F-35B vertical takeoff jet fighter.
So now the Navy has two hot new aircraft that require an innovative
solution to the melting deck problem. The Navy also discovered that
the exhaust heat problem varied in intensity between different classes
of helicopter carriers (each with a different deck design.)

The Navy is looking for a solution that will not require extensive
modification of current carrier decks. This includes a lot of decks,
both the eleven large carriers, and the ten smaller LHAs and LHDs.
This is shaping up as another multi-billion dollar "oops" moment, as
the melting deck problem was never brought up during the long
development of either aircraft.

Previously, the Harrier was the only aircraft to put serious amounts
of heat on the carrier deck, but not enough to do damage. But when you
compare the Harrier engine with those on the V-22 and F-35B, you can
easily see that there is a lot more heat coming out of the two more
recent aircraft. Someone should have done the math before it became a
real problem.

Make a designated VTOL area and add shuttle style tiles there.

It wouldn't stand up to mechanical abuse. While the tiles will
withstand heat they would crumble under the weight of taxiing aircraft
and deck vehicles.

Dan, U.S. Air Force, retired

Indeed. The shuttle tiles have astonishing insulation properties, but
are composed of 10% silica fibres, 90% air with a borosilicate glass
coating and have no load-bearing capacity to speak of. They would be
crushed by the first person to walk on them, never mind an aircraft tyre.

Continuous seawater irrigation seems like the best option to me.