You won't find information about Derby ER, you need knowledge.
According to you no information available but somehow you feel like pulling a 200km range out of your butt.
As per the Israelis, the AIM-120D is only half as capable. That's plenty enough.
Third world nations are buying Derby which include India first world nations are buying the Aim-120D. Why don't you post a source to see what the Israelis actually said instead of hearing it come out of you.
Source,The same with Astra, the 160Km range refers to medium altitude, that's not its max range.
Astra Mk3, a Very long-range BVR air-to-air missile (BVRAAM) will start its Developmental trials in 2022 that DRDO has co-developed with Russia. a solid-fueled air-breathing ramjet engine based Astra Mk3 has been tested from a ground-based launcher twice in previous years and demonstrated first its smokeless booster and later its ramjet engine.As for Astra Mk3, it's already under testing. First flew in 2018, so no, it's not like the AIM-260.
DRDO Chief: Astra Mk2 missile to be tested this year, Astra Mk2 scheduled for 2022 - See Latest
Aim-260 test is set for 2021-2022 and goes IOC 2022. It's been in development since 2017.
Collins could not give any new details about the AIM-260 Joint Advanced Tactical Missile (JATM), revealed at the same conference two years ago, when then-program executive officer Maj. Gen. Anthony W. Genatempo, said it would be ready for tests from the F-22 in 2022. Collins said the Air Force is “pushing forward and executing” the program, but he is restricted from further comment due to its sensitivity. The missile is set to replace the AIM-120 Advanced Medium-Range Air-to-Air Missile sometime this decade and is purported to have a range to compete with China’s new long-range air-to-air missiles such as the PL-15.
Genatempo forecast production lots of JATMs in the hundreds of units and said AMRAAM production will start tailing off as the JATM ramps up. The Air Force’s 2022 budget request included a reduction in AMRAAM production from previous years.
As Air Force Ramps Up JASSM, Work Begins on its Replacement - Air Force Magazine
Aim-260 will enter service on fighters before Mk3.
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What they are talking about is testing from a fighter jet. All it needs is a 2-year testing cycle before induction.
Then why did you insinuate differently when you know we were talking about air to air missiles?
And again I'll ask (but i know the answer) why did you bring up the Astra when we were talking about Derby? Why did you change the topic?
