Magnetic proximity fuze

A magnetic proximity fuze was patented by P.J. Eliomarkakis, (United States Patent US2434551 of January 13, 1948) [1] although similar devices had been in service for nearly a decade. It is a type of proximity fuze that initiates a detonator in a piece of ordnance such as a land mine, naval mine, depth charge, or shell when the fuse's magnetic equilibrium is upset by a magnetic object such as a tank or a submarine.

Magnetic field sensors and movement sensors inside the ordnance detect changes to the terrestrial magnetic field of the ordnance caused by another ferromagnetic object. A signal processor inside the ordnance receives the signals from the magnetic field sensors and movement sensors and activates the detonator which will then detonate the explosives within the ordnance.[2]

Examples

Examples of pieces of ordnance that employ a magnetic fuze include:

  • the Chinese Chen-2 bottom mine
  • the Egyptian T-93 mine
gollark: ```python#!/usr/bin/env python3import argparseimport subprocessparser = argparse.ArgumentParser(description='Compile a WHY program')parser.add_argument("input", help="File containing WHY source code")parser.add_argument("-o", "--output", help="Filename of the output executable to make", default="./a.why")parser.add_argument("-O", "--optimize", help="Optimization level", type=int, default="0")args = parser.parse_args()def build_C(args): template = """#define QUITELONG long long intconst QUITELONG max = @max@;int main() { QUITELONG i = 0; while (i < max) { i++; } @code@} """ for k, v in args.items(): template = template.replace(f"@{k}@", str(v)) return templateinput = args.inputoutput = args.outputtemp = "ignore-this-please"with open(input, "r") as f: contents = f.read() looplen = max(1000, (2 ** -args.optimize) * 1000000000) code = build_C({ "code": contents, "max": looplen }) with open(temp, "w") as out: out.write(code)subprocess.run(["gcc", "-x", "c", "-o", output, temp])```
gollark: ^
gollark: 937 bytes.
gollark: The WHY compiler is *very* small.
gollark: I could add that to `WHY`, if I knew how to parse CLI args in python.

See also

References
  1. "Magnetic fuse" (PDF).
  2. "Archived copy". Archived from the original on 2011-06-12. Retrieved 2010-04-26.CS1 maint: archived copy as title (link)


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