science

Special Patrol Insertion/Extraction

Special Patrol Insertion/Extraction is a science 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 Special Patrol Insertion/Extraction rather than just read about it. In short: The Special Patrol Insertion/Extraction (SPIE) system was developed as a means to rapidly insert and/or extract a reconnaissance patrol from an area that does not permit a helicopter to land. SPIE has application for rough terrain as well as water inserts/extracts.

Key takeaways

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

Reference excerpt

The Special Patrol Insertion/Extraction (SPIE) system was developed as a means to rapidly insert and/or extract a reconnaissance patrol from an area that does not permit a helicopter to land. SPIE has application for rough terrain as well as water inserts/extracts. It is an adaptation of the STABO rig. Generally, the SPIE rope is lowered into the pickup area from a hovering helicopter. Patrol personnel, each wearing a harness with an attached carabiner, hook up to a D-ring inserted in the SPIE rope. A second safety line is attached to a second D-ring located above the first. The helicopter lifts vertically from an extract zone until the rope and personnel are clear of obstructions, then proceeds in forward flight to a secure insert zone. The rope and personnel are treated as an external load and airspeeds, altitudes, and oscillations must be monitored.

The United States Coast Guard uses a similar technique to board ships when speed and stealth are required.

History The Special Personnel Insertion/Extraction was first designed by United States Marines of 1st Force Reconnaissance Company, the Marine division's 1st Reconnaissance Battalion, and the 1st Marine Aircraft Wing riggers. In 1969 they created and actively used several versions of the SPIE in combat before it was officially recommended to be tested. In May 1970, the commanding general of 3rd Marine Amphibious Force coordinated input from the 1st Marine Division and his 1st Marine Aircraft Wing. A request was sent to the Commandant of the Marine Corps and to the Development Center for certification of the SPIE rig and to its safety and use. The parachute test jumpers of the Naval Parachute Unit (NPU) and Marine Corps, all qualified parachutist designers and engineers, assembled together at NAS El Centro for the initial testing and evaluation of the SPIE rig. After a few test dummies were tried, Marine Major Bruce F. Meyers, along with four Navy NPU parachutist engineers, successfully attempted the first flight on the current SPIE assembly.

See also Fulton surface-to-air recovery system Helicopter Rope Suspension Technique

References

Illustrations

Worked examples

Example 1 — a first encounter with Special Patrol Insertion/Extraction

Start with the simplest possible case. Write down what Special Patrol Insertion/Extraction claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, 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 Special Patrol Insertion/Extraction 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 Special Patrol Insertion/Extraction 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 Special Patrol Insertion/Extraction

In research: Special Patrol Insertion/Extraction appears in science 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 Special Patrol Insertion/Extraction 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: Special Patrol Insertion/Extraction is common in secondary-school and first-year university syllabi. It links to neighbouring topics Military education and training, Military equipment introduced in the 1960s, so understanding it makes those chapters shorter.
In everyday life: Look for Special Patrol Insertion/Extraction 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 Special Patrol Insertion/Extraction in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Special Patrol Insertion/Extraction 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 Special Patrol Insertion/Extraction out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Special Patrol Insertion/Extraction in simple terms?

Why does Special Patrol Insertion/Extraction matter?

Because it connects several science 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 Special Patrol Insertion/Extraction?

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 Special Patrol Insertion/Extraction.