shinee world japan member blog update ♡ 170408

jonghyun: everyone from osaka: thank you for the past two days.

today is a very special day for me, isn’t it?! i was very happy that i was able to celebrate my birthday with you last year and this year, for two consecutive years. i was able to make new concert memories. ^^ 

when i was blowing out the candles i wish for everyone - including myself, of course, as well as the members, all of you fans, and the staff - to become healthy and happy from now on. ☆ (source: mredwardsanders)

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Arena (Арена) active protection system, the successor to the revolutionary but fundamentally flawed Drozd APS.

The system uses a multi-function Doppler radar, which can be turned on and off by the tank commander. In conjunction with radar input, a digital computer scans an arc around the tank for threats, and evaluates which of the tank’s 26 quick-action projectiles it will release to intercept the incoming threat. In selecting the projectile to use for defeating the threat, the ballistic computer employs the information processed by the radar, including information such as flight parameters and velocity. The computer has a reaction time of 0.05 seconds and protects the tank over a 300-degree arc, everywhere but the rear side of the turret. The system engages targets within 50 metres (55 yd) of the vehicle it is defending, and the ammunition detonates at around 1.5 metres (1.6 yd) from the threat. It will engage any threat approaching the tank between the velocities of 70 metres per second (230 ft/s) and 700 metres per second (2,300 ft/s), and can detect false targets, such as outgoing projectiles, birds and small caliber bullets.

1. Protective siloes
2. Radar
3. Protective ammo
4. Incoming anti-tank guided missile
5. Tracking phase

The relatively confined space of defense in which the warheads operate ensures any collateral damage is limited, but nevertheless the system still poses a threat to nearby infantry, albeit not in the level Drozd used to.