Why Israel’s Billion-Dollar Defense System Missed Houthi Missiles

How Did the Houthi Missile Strike Israel?

Overview of the Houthi Missile Capabilities

• The Houthi forces managed to strike Israel from over a thousand miles away using Iranian-engineered ballistic and semi-hypersonic missiles with a skip trajectory flight path.

• These newer weapons can zigzag mid-flight, confusing interceptor radars due to their unpredictable trajectories at extreme speeds.

The Palestine 2 Missile

• The Houthi launched the Palestine 2 missile, capable of reaching speeds up to Mach 16, allowing it to travel from Yemen to Israel in mere minutes.

• This missile features a sophisticated skip gliding mechanism that complicates interception by traditional defense systems.

Characteristics and Threat Level

• Experts suggest the missile has semi-hypersonic characteristics, enabling sharp maneuvers during flight that older models cannot achieve.

• The Palestine 2 has a range of approximately 1,500 km and utilizes hypersonic glide technology for enhanced maneuverability.

Vulnerabilities in Defense Systems

• The combination of speed, course changes, and potential stealth capabilities exposes vulnerabilities even in heavily defended airspaces like Israel's.

• Non-state actors like the Houthi now have access to advanced weaponry previously thought exclusive to major powers.

Understanding Iran's Missile Technology

Overview of Iranian Ballistic Missiles

• To comprehend the Houthi missile's operation, one must examine Iran's missile technology and its strategy involving multiple ballistic missiles targeting Israel.

• Iran utilized variants of the Shahab 3 ballistic missile in recent attacks on Israel; this model serves as the foundation for many medium-range missiles.

Mechanism of Operation

• The operational steps include positioning at a 90° angle before launch, ascending near Earth's atmosphere edge, warhead separation upon re-entry, and potential for single or multiple warheads depending on variant.

Israeli Defense Systems Explained

Structure of Israeli Defense Layers

• The Israeli defense system comprises three tiers:

• Long-range Aeromissile Defense System designed against Iranian threats.

• David Sling system aimed at intercepting missiles and drones.

• Iron Dome which primarily defends against short-range rocket attacks.

Limitations of Current Systems

• Despite these layers, there are limitations; for instance, Iron Dome has an effective range around 40 miles while David’s Sling can intercept up to 180 miles.

Missile Defense Systems and Their Challenges

Overview of Missile Threats

• The top-tier aero anti-ballistic missile systems can target threats up to 1,500 meters away. Reports indicate that 180 ballistic missiles, potentially hypersonic as claimed by the Iranian Revolutionary Guard, were launched.

• Despite the Aerrow missile defense system intercepting many missiles before reaching Israel, a significant number still penetrated defenses.

Challenges in Interception

• A key issue in interception failure occurred after the glide vehicle detached from its launcher; it could change trajectory multiple times, complicating interception efforts.

• This maneuver bypassed both David's Sling and Iron Dome systems, which are not designed to counter hypersonic missiles like the FAT 2 model.

Cost Analysis of Missile Attacks

• Iran reportedly spent over $200 million launching ballistic missiles and drones in a single day, while the IDF incurred costs of approximately $1 billion for defense.

• The cost breakdown includes:

• Ara missile: ~$2.5 million each

• David Sling: ~$1 million each

• Iron Dome: $20,000 to $100,000 per missile depending on inflation.

Components of the Aerrow Missile Defense System

• The Aerrow system consists of three main components:

• Missile Launcher Unit: Contains six ready-to-fire missiles housed in erector launcher tubes on a two-axle trailer weighing 35 tons when fully loaded.

• Green Pine Radar: Functions as warning and fire control radar for target detection and guidance within the A3 anti-ballistic air defense system.

Engineering Insights into Missile Technology

• The Arrow operates as a two-stage missile with solid propellant booster and sustainer rocket motors.

• Key features include an ignition chamber that triggers combustion of a specially crafted blend of fuel and oxidizer encased in a protective shell.

Kill Vehicle Mechanics

• The kill vehicle comprises three parts:

• Propulsion System: Features thrust vectoring nozzle for maneuverability.

• Warhead: A directed high explosive fragmentation weighing around 150 kg (330 lbs).

• Seeker: Capable of pivoting to track targets effectively.

Comparison with Other Systems

• Notably, THAAD (Terminal High Altitude Area Defense) uses divert attitude control thrusters compared to A3's thrust vectoring nozzle which offers advantages such as compensating for radar inaccuracies during targeting.