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As defensive weapons, traction trebuchets were positioned behind city walls and guided by an "artillery observer" on the walls. Range was determined by the strength and number of men pulling. Increasing and decreasing range meant adding and removing men from the pulling ropes.
A rail system mounted on top of a SIG SG 550 A dovetail rail on a rifle receiver for mounting a sight. A rail integration system (RIS; also called a rail accessory system (RAS), rail interface system, rail system, mount, base, gun rail, or simply a rail [1]) is a generic term for any standardized attachment system for mounting firearm accessories via bar-like straight brackets (i.e. "rails ...
This proven system was combined with a purpose-made mounting, capable of fast elevation and traverse speeds, to track incoming targets. An entirely self-contained unit, the mounting houses the gun, an automated fire-control system and all other major components, enabling it to automatically search for, detect, track, engage, and confirm kills ...
The New York roof hook (or halligan hook) is a firefighting tool used mostly for rooftop operations including vertical and horizontal ventilation, [1] pulling and prying. Developed in the 1940s by FDNY Deputy Chief Hugh Halligan, a prolific firefighting inventor who also designed the Halligan bar , the tool is composed of a 6-foot (1.8 m) long ...
Observatory car drawing from a December 1916 Scientific American cover Juray fish-shaped spy gondola while crewed. The spy gondola, spy basket, observation car or sub-cloud car (German: Spähgondel or Spähkorb) is a crewed vessel that an airship hiding in cloud cover could lower several hundred metres [1] to a point below the clouds in order to inconspicuously observe the ground and help ...
Lead rein A third rein used on bridles, not to be confused with the single lead rope of a halter nor the direct rein aid also known as the "leading rein". In North America a third rein is most commonly seen as part of the mecate of a hackamore. In Mongolia it is integral to the bridle, and tied to either a bit ring or a chin strap. Long reins ...
Apart from military use, some civilian aircraft are also equipped with countermeasure flares, against terrorism: the Israeli airline El Al, having been the target of the failed 2002 airliner attack, in which shoulder-launched surface-to-air missiles were fired at an airliner while taking off, began equipping its fleet with radar-based, automated flare release countermeasures from June 2004.
Cloud seeding in the United Arab Emirates is a weather modification technique used by the government to address water challenges in the country. Cloud seeding is also referred to as man made precipitation and artificial rain making. [61] The United Arab Emirates is one of the first countries in the Persian Gulf region to use cloud seeding ...