weapons - Air Marshal's Perspective

February 13, 2022February 14, 2022

S-400 Air Defence System

It was great interacting with Aadi Achint on Def Talks on a very current and valid topic.

(All information is based on open sources and views expressed are personal)

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Bottom Line

The system is much needed and is a game changer.

Question

Will we ever become self reliant on defence equipment, weapons and systems?

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November 10, 2021November 9, 2021

Emerging class of missile technologies include manoeuvrable vehicles that carry warheads through the atmosphere at more than five times the speed of sound. Hypersonic glide vehicles (HGVs), like all weapons delivered by medium and longer range rocket boosters, can travel at speeds of at least Mach 5, or about 1 mile per second. The key difference between missiles armed with HGVs and missiles armed with ballistic re-entry vehicles (i.e., those that travel on a ballistic trajectory throughout their flight) is not their speed, but their ability to manoeuvre and change course after they are released from their rocket boosters. Hypersonic weapons can be classified into two distinct categories:

Hypersonic cruise missiles. These operate much like typical sub-sonic and supersonic cruise missiles (using air-breathing engines to power themselves through the atmosphere) but fly at higher speeds. They cannot match the speeds or ranges achievable by boost-glide vehicles.

Pic Courtesy: PTs IAS Academy

Hypersonic boost-glide Vehicles. They are accelerated to extremely high velocities on rocket boosters similar to those used to launch ballistic missiles. They then proceed to glide, unpowered, through the upper atmosphere until reaching their target.

Pic Courtesy: Union of Concerned scientists

The flight of hypersonic boost-glide vehicle is divided into six stages: boost, ballistic, re-entry, pull-up, glide, and terminal phases. In the boost phase, a rocket booster accelerates the missile carrying the hypersonic vehicle until the booster exhausts its fuel, at which point it detaches from the glide vehicle and falls back to Earth. In the ballistic phase, the vehicle travels above the atmosphere on a ballistic trajectory under only the influence of gravity. Both of these phases are comparable to a ballistic missile launch. Hypersonic trajectories diverge from those of ballistic missiles in the re-entry and pull-up phases. Here, the vehicle pierces the upper atmosphere, then slows its descent to enter a stable glide trajectory. In the glide phase, the vehicle generates aerodynamic lift to sustain near-level flight. Finally, in the terminal phase, the glider dives toward its target.

These weapons outperform existing missiles in terms of delivery time and evasion of early warning systems. Their flight characteristics are distinct from those of typical ballistic missiles, which spend most of flight above the atmosphere and are capable of only limited manoeuvrability, and from those of subsonic or supersonic cruise missiles, which travel through the atmosphere but fly more slowly.

Continue reading “Hypersonic Long Range Weapons”

September 4, 2021September 27, 2021

Taliban’s Runover: Some Factors

Setting and Population Density Pattern.

Afghanistan’s overall population density is only about 148 people per square mile / 57 people per square kilometer (Indian population density is 1202 per square mile / 464 per square kilometer).

Even in the populated areas of Afghanistan, people are quite spread out, with only 26 percent of the population living in urban centres. This dispersed population pattern, is a challenge for the state army to defend while, it favours the Taliban’s quick-moving offensive.

Taliban Strategy.

Following the withdrawal of Western forces, the Taliban swiftly and easily occupied vast swaths of sparsely populated territory. They then used that territory to launch coordinated and fast-moving offensives.

Instead of traditional tools of warfare (like artillery and armour), the Taliban moved quickly in weaponised pickup trucks to defeat dug-in defensive They forced The Afghan forces to retreat from outposts and checkpoints to (safety of) urban areas, thereby ceding control of supply lines and major highways. This allowed Taliban forces to surround and isolate urban centers.

Local officials were quick to accept Taliban control because they had little allegiance to the central government and knew that Afghan forces were unwilling (and unable) to defend their areas from Taliban

Taliban Advantages.

Taliban enjoyed a presence throughout the country, allowing them to pressure the Afghan National Defense and Security Forces in multiple locations.

The Taliban were able to conduct lightning offensives across many fronts, which fatally stressed the limited cohesion of the Afghan National Defense and Security.

Afghan Security Force: Challenges

Low force-to-space ratios meant that defenders had significant ground to cover and had to move swiftly and in a coordinated fashion to stand any chance of successfully countering Taliban threats from many The Afghan security forces were not geared up to these tasks.

The Afghan military lacked the capacity and cohesion required to stand firm and defend against fast-moving offensives across many fronts.

Afghan forces had always been heavily dependent on S. air support for troop movement, re-supply, and combat operations. In absence of the air support, the Afghan military was unable to regroup or move units around quickly.

Afghan forces were hampered by lack of cohesion, leadership, motivation, and limited training & mobility.

Outcome.

The weaknesses of the Afghan security forces, combined with the low force-to-space ratios generated by Afghanistan’s terrain and its population distribution, made a quick Taliban victory a reality.

Taliban rarely had to use force because they could leverage their geographic reach to intimidate local leaders and convince defenders to flee or surrender.

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