A single Russian S-400 battery tracks 300 targets using its 600-km 91N6E radar. In just 10 seconds, the 55K6E command post and 92N6E engagement radar can simultaneously fire 72 Mach 14 missiles at 36 different targets to dominate the sky.

One S-400 battery, dozens of targets: How it fights an air battle in seconds

While the S-400's Mach 14 interceptors defeat traditional ballistic missiles, unpredictable hypersonic glide vehicles pose a severe threat. Upgrades like the hit-to-kill 77N6 missile and integration with the S-500 are required for total defence.

Can hypersonic missiles defeat the S-400?

While the S-400's powerful 91N6E radar is sensitive enough to detect the tiny 0.01 square-metre radar cross section of a bird, advanced digital algorithms immediately filter them out. This prevents the system from being blinded by biological clutter.

Can an S-400 detect a bird?

The S-400 air defence system requires a major overhaul every 10,000 hours of operation. While its heavy radar and command vehicles boast a 20-year service life, the interceptor missiles naturally degrade and demand replacement after just 10 years.

How often does an S-400 need maintenance?

The S-400 uses vertical cold launch technology for 360-degree coverage and a rapid 9-second response time. By ejecting the missile before ignition, it prevents extreme heat damage, significantly extending the launcher's operational service life.

Why the S-400 fires its missiles straight up into the air

The S-400 uses expensive radar-absorbing paint to reduce its radar cross-section and thermal signature. This stealth coating features magnetic fillers and antistatic properties to protect electronics.

Why the specialized paint on an S-400 costs thousands of dollars per truck

The S-400 Triumf uses an advanced radar network to track 300 targets up to 600 km away. By integrating the 91N6E Big Bird, 96L6E all-altitude radar, and Nebo-M stealth detection, its 92N6E engagement radar can simultaneously guide 72 missiles.

'Eyes before weapons': How the S-400's radar network works

he S-400 system integrates multiple radar trucks for 360-degree surveillance. It tracks 300 targets and engages 36 threats simultaneously using L-band, S-band, and X-band units.

How the S-400 uses multiple radar trucks to scan the sky at once

The S-400 uses solid rocket fuel for instant readiness and a 9-second response time. Solid propellant gives high thrust to hit 17,000 km/h speeds without complex plumbing.

Why the S-400 uses solid rocket fuel instead of liquid fuel

The S-400 uses the MZKT-7930 8x8 chassis with a 500 hp V12 engine to carry 24-tonne radars. It climbs steep off-road gradients and deploys in five minutes, providing extreme tactical mobility.

Why the S-400 relies on an eight-wheel-drive system

The S-400 uses MZKT-7930 trucks with 1.5-metre tall tyres to carry 24-tonne payloads. These 8x8 wheels ensure off-road traction and 70 km/h speeds.

Why the S-400 tires are nearly as tall as a grown adult

The Russian S-400 uses the 91N6E radar to track 300 targets up to 600 km away. Its 55K6E command post and 92N6E engagement radar allow it to simultaneously fire on 36 targets within 10 seconds, creating an impenetrable 400-km air defence shield.

How the S-400 tracks multiple targets at once

Firing the S-400 Triumf is astronomically expensive because its interceptor missiles cost up to USD 2 million each. Packed with active radar homing and Mach 14 propulsion, shooting down cheap USD 20,000 drones creates a severe financial drain.

'Every launch comes at a price': Why firing an S-400 missile is so expensive

The true cost of operating an S-400 battery far exceeds its USD 1.25 billion price tag. From multi-million-dollar interceptor missiles and constant maintenance to the severe geopolitical cost of US sanctions, sustaining this Russian air defence system is astronomically expensive.

'Maintenance, training and missiles': Inside the true cost of operating an S-400 battery

The Russian S-400 Triumf uses its 91N6E radar to track 300 aerial threats up to 600 kilometres away. Its digital command post allows the system to simultaneously engage 36 targets by concurrently guiding 72 missiles in just 9 to 10 seconds.

'36 targets engaged simultaneously': How many targets can the S-400 engage at once?

With individual missiles costing between $300,000 and $2 million, the Russian S-400 system offers advanced air defence at a fraction of the $3 billion price tag of a US THAAD battery.

How much does a single S-400 missile cost?

India is set to strengthen its air defence network as Russia ships the fourth S-400 Triumf missile defence system under the multi-billion-dollar defence deal between the two nations. The advanced system is expected to significantly enhance India’s border surveillance and aerial interception capabilities amid evolving regional security challenges.


Russia Ships Fourth S-400 System, India Boosts Border Air Defence

India's defence ‌acquisition council approved proposals ​worth ​2.38 trillion rupees ($25 ⁠billion) ​on Friday ​to buy medium transport aircraft, ​Russian ​S-400 surface-to-air missile ‌systems, ⁠and remotely piloted strike ​aircraft, ​the ⁠government said in ​a ​statement.


Indian Air Force Wants to Acquire More S-400 Air Defence Systems 

The Indian Air Force has for the first time showcased its Sudarshan S-400 long-range air defence missile system, claiming the longest-ever recorded kill in military history. The interception was achieved during Operation Sindoor, highlighting India’s advanced air defence capabilities, precision targeting, and strategic preparedness. This demonstration underscores the IAF’s commitment to modernisation and safeguarding national security with cutting-edge technology.

IAF Showcases S-400, Claims Longest Ever Kill 

S-500 reaches 600km range for hypersonic threats. S-400 covers 400km deployed in 100+ countries. S-300VM provides 200km reserve defence. Pantsir handles 40km point protection. Tor offers 30km tactical coverage. Buk reaches 45km altitude. Strela covers 15km portable defence.

From S-400 to S-500! Top 7 Russian air-defence systems compared

Russian President Vladimir Putin is set to hold high-level bilateral talks with Prime Minister Narendra Modi as India considers acquiring additional S-400 air-defence systems. The visit is expected to focus on defence cooperation, trade, energy partnerships, and regional security. Here’s what both sides aim to achieve and how the talks could shape India–Russia strategic ties.

Russian President to Hold Bilateral Talks With Indian PM Modi

India’s S-400 deal with Russia is back in focus after Operation Sindoor showed how strongly the system defended against major attacks. With new threats, coastline gaps and pressure from Western sanctions, India to buy more S-400 units.


India-Russia summit 2025: How the S-400 expansion deal could strengthen air defence systems

Effective air-defence systems provide the essential shield that protects populations, critical infrastructure, military facilities and armed forces from these threats. Without this shield, much of a nation’s strategic vulnerability remains exposed.

The new arms race: Why nations are investing heavily in missile-shield technology

India’s S-400 air defence system is capable of detecting, tracking, and intercepting targets at much greater distances, while Pakistani missile systems are generally believed to have an effective range of around 80 kilometres.

S-400 dominated in Operation Sindoor, leaving Pakistani fighter jets in the dust

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