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British development of 1500 degree

Britain has developed a high temperature resistance (mainly for the main components of aluminum titanium alloy) of the metal coating technology, used to coat the "Elizabeth" aircraft carrier flight deck - known to be able to resist 1500 degrees of high temperature. The reason for this is that the gas of the tail nozzle will form a high temperature corrosion effect on the flight deck when the F-35B fighter plane is landing.

So for this news, we can put forward three questions: first, is the F-35B and the aircraft carrier construction, there is no consideration of the high temperature damage to the gas? Second, why is the use of aluminum and titanium alloy, really can block the temperature of 1500 degrees? Finally, this transformation can provide a long time protection? The answer to the first question is, consider, but the actual situation is much worse than the design. The F-35B and VTOL power system had two choices; simple method, with reference to the design of Jacques 141. In front of the fuselage set 1-2 Taiwan simplified structure (such as canceling afterburner, simplified Compressor Series) turbojet engine, providing vertical lift. The complex method, it is from the main engine with a complex driving mechanism, to drive the fan to blow up enough lift.

Only in the performance of the aircraft itself, Jacques 141 ways is simple, convenient and highest performance, lift the engine working time is very short life requirements is not high, thrust can be tuned very terrible. But this route, in fact, is to use the complexity of the design and manufacture of warships and the flexibility to adapt to the venue for the price, in exchange for the performance of the aircraft itself. Because the lift engine gas temperature is very high, it is necessary to bear Jacques 141 such aircraft taking off and landing, the flight deck itself must be heat-resistant metal but also to the use of cooling water circulation cooling, is actually made a particularly large paved carrier baffle. The F-35B to circumvent this problem, the lower performance, manufacturing more complex and costly lift fan programs; but the test results show that, it did not completely solve the problem of the jet temperature is too high, the deck of the still to enhancement.

The answer to the second question is that titanium aluminum alloy by high aluminum content, can be on the surface to form a continuous stable alumina protective film, which is upon which resist high temperature oxidation (that is, the British scared fire die carrier deck corrosion problem of key) and titanium (again, titanium in high temperature properties are very active and high temperature resistance is the disadvantage of titanium alloy and is not the key to the. As for the anti 1500 degrees or something, that is blown out; titanium alloy high temperature titanium alloy working temperature limit of 550 degrees for the watershed, to 600 degrees are the performance and price are very high grades. Besides the F-35B tail jet where to so high temperature, is Jacques 141 of the lift engine is not.

The answer to the third question, seemingly can be used for a long time, the alleged life can reach 50 years, the aircraft carrier service life without maintenance. Is said to be by about 10000 degrees of plasma heating metal powder and the molten metal formed droplet spreading and rapid curing, 2.5 mm thick coating; laying reached an area of 2000 square meters, 10% of the total area of the flight deck.

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