physics

THOR (weapon)

THOR (weapon) is a physics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand THOR (weapon) rather than just read about it. In short: The Tactical High-power Operational Responder (THOR) is a high-power microwave directed energy weapon developed by the United States Air Force Research Laboratory (AFRL). Design THOR is designed to counter unmanned aerial vehicles (UAVs) by sending out a high-power, short pulse of microwaves to disable electronics through overwhelming critical components intended to carry electrical currents.

Key takeaways

THOR (weapon) belongs to physics; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect THOR (weapon) to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of THOR (weapon) from memory before moving on to harder problems.

Reference excerpt

The Tactical High-power Operational Responder (THOR) is a high-power microwave directed energy weapon developed by the United States Air Force Research Laboratory (AFRL).

Design THOR is designed to counter unmanned aerial vehicles (UAVs) by sending out a high-power, short pulse of microwaves to disable electronics through overwhelming critical components intended to carry electrical currents. This is effective at intercepting drone swarms; while a laser needs time to burn through one at a time, a High-Power Microwave (HPM) weapon can fire in an arc to disable multiple UAVs at once and refire in rapid succession. Compared to hard-kill methods for engaging drones, THOR's radio bursts have a wider engagement range, are silent, and are instantaneous. Intended for base defense, the system resembles a 20 ft (6.1 m) shipping container with a satellite dish attached. It can be transported on a C-130 Hercules and assembled by two personnel in under three hours.

History THOR first began testing in spring 2019. The system was developed quickly in 18 months for $18 million. The program represents a collaboration between AFRL, BAE Systems, Leidos, and Verus Research, an engineering firm based in Albuquerque. An Air Force official said in December 2020 that THOR was being tested "in a real-world setting" in Africa, but that statement was then retracted. The AFRL began solicitations for contractors to develop a follow-on prototype to THOR in July 2021 called Mjölnir, named after Thor's hammer. Mjölnir will incorporate improvements in capability, reliability, and manufacturing readiness to produce a deployable system that can be made in large numbers. In February 2022, the AFRL awarded Leidos a $26 million contract to build the system. On 5 April 2023, THOR successfully engaged multiple targets in a simulated swarm attack in a demonstration at the Chestnut Test Site, Kirtland Air Force Base; the number of drones downed and at what range was not disclosed.

See also Counter-electronics High Power Microwave Advanced Missile Project Death ray – Theoretical weapon Epirus Leonidas – American high-power microwave (HPM) weapon FK-4000 – Chinese high-power microwave weapon Hurricane (weapon) – Chinese high-power microwave weapon Radio Frequency Directed Energy Weapon – United Kingdom radio-frequency directed-energy weapon (RF-DEW) demonstratorPages displaying short descriptions of redirect targets Raytheon Phaser – Directed-energy weapon

References

External links "THOR (Tactical High-power Operational Responder) Destroys Swarms of Enemy Drones". youtu.be. March 2023. Retrieved 2023-05-26. "TACTICAL HIGH POWER OPERATIONAL RESPONDER (THOR) – Air Force Research Laboratory". afresearchlab.com. Retrieved 2023-05-27. "Army partners with Air Force's THOR for base defense". Air Force. 2021-02-23. Retrieved 2023-05-27.

Worked examples

Example 1 — a first encounter with THOR (weapon)

Start with the simplest possible case. Write down what THOR (weapon) claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to THOR (weapon) before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about THOR (weapon) ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of THOR (weapon)

In research: THOR (weapon) appears in physics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses THOR (weapon) in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: THOR (weapon) is common in secondary-school and first-year university syllabi. It links to neighbouring topics Directed-energy weapons, Directed-energy weapons of the United States, so understanding it makes those chapters shorter.
In everyday life: Look for THOR (weapon) outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study THOR (weapon) in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what THOR (weapon) means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain THOR (weapon) out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is THOR (weapon) in simple terms?

The Tactical High-power Operational Responder (THOR) is a high-power microwave directed energy weapon developed by the United States Air Force Research Laboratory (AFRL). Design THOR is designed to counter unmanned aerial vehicles (UAVs) by sending out a high-power, short pulse of microwaves to dis…

Why does THOR (weapon) matter?

Because it connects several physics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study THOR (weapon)?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on THOR (weapon).