American f-35 fighter in 2 consecutive accidents

The news prompted

Recently, American f-35 fighter in 2 consecutive accidents: on February 14, cabin smoke, February 22 engines found cracks. No wonder the multinational procurement to beat a retreat.

Even the us has its own car-scrapping. Earlier, the pentagon report, the f-35 some areas problem hasn't been solved yet, new problems appear constantly, the f-35 has yet to mature.

This "the most expensive in the history of fighter" why accidents frequently, is not mature in where? Let's follow the military experts, interpreting the aircraft a play-off stopping the growth of road.

The f-35 ailing problem can be roughly divided into two categories.

Category belongs to individual or accidental phenomenon, any new equipment in the process of research and development are likely to encounter, to name but a few reasons: or the consideration on the design and manufacture of owe weeks, reliability, parts or materials do not meet the requirements, or new technology is needed.

F-35 stealth tailplane in high speed coating fall off phenomenon, buried within the tank hatch problem, engine afterburner appeared phenomenon of volatile combustion, oil system, propulsion system problem such as line fall off as such. This kind of problem only need to make a few adjustments on the design and manufacture, improvement can be removed.

Another kind is different, and excessive innovation, applying the idea of new design and new technology maturity level is not high, is directly related to the proportion is too big. This kind of problem is systemic, structural, inescapably, difficult to eliminate. The f-35 is the new design and new technologies, systems, the most complex of a fighter, it let us taste the bitter taste of research and development, pay a heavy price:

- weight to America's struggle. More machine in order to let the f-35 contained in oil, greater combat radius, the americans on the design of the fuselage and wings, the thick skin and weak framework design. Can be the first f-35 a factory was found in 2006, although the internal volume increased, but lead to severely overweight aircraft skin thickening. In order to lose weight, to the comprehensive weight loss on the f-35 is designed. Aircraft weight, though cut down, a carelessly will beyond the deadline, this let the weight of the each related product control are treading on thin ice.

- high degree of integration brings more problems. F-35 software engineering are extremely complex, has been far more than the f-22, leading to each phase test flight test with common package delivery delays. As a combination of numerous information and data of helmet mounted display, imaging resembles instability, symbols, not only unable to properly display the vision data, also a pilot the sales to deal with. The americans want to take with equipment solution, but the helmet is getting heavier and heavier, the pilot's neck is still a problem that can withstand.

Similar problems abound: tank ventilation system safety, poor design, lightning protection measures for avionics system cooling fluid has a fire risk, lift fan clutch temperature is too high, and so on.