另外,JNAAM与Meteor的区别在这里
Regarding Meteor, internal carriage requires clipped wings, especially to carry multiple rounds. These will be adopted: studies done by MBDA have long confirmed that no problems are to be expected.After trying to secure italian participation in the Meteor integration process, the UK seems now to put much hope in Japan: a bi-national programme, known as Joint New Air to Air Missile (JNAAM) is taking shape, entering its second phase this year.
The programme is about mating the Meteor with an advanced AESA radar seeker made in Japan. There can be little if any doubt that the clipped wings will also be part of this "new" design.
Timeframes for the JNAAM have not been detailed, but the Meteor that goes into the F-35 might actually well be the JNAAM itself. Japan is purchasing the F-35A, so their interest is easily explained.
In practice, it looks like JNAAM will be the actual AMRAAM C-5 replacement for the RAF: the C-5 can now be expected to stay in service well into the 2020s, arming the retained Typhoon Tranche 1 (which cannot receive Meteor without expensive upgrades and retrofits) and, initially, the F-35B.
The AMRAAM C-5 support contract has been recently extended out to 2020, and a further 5 years or more of extension are extremely likely.
