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Ideally, this drive requires a 1 RPM stepper motor on a 1/4" 20 pitch drive rod, but for shorter exposures on a stable platform , a well designed type-4 barn-door tracker is supposed to produce very acceptable results even when manually advancing the drive in 15 or 10 second sequential steps in order to achieve one full revolution per minute.
In October 2012 a RQ-170 was used to conduct bomb damage assessment for a test drop of a Massive Ordnance Penetrator bomb from a Northrop Grumman B-2 Spirit stealth bomber. [28] The 44th Reconnaissance Squadron was established on 1 April 2015. While the USAF did not disclose what aircraft the unit was equipped with, it has been reported that it ...
The Visby class is a series of corvettes in use by the Swedish Navy.It is the latest class of corvette adopted by the navy after the Göteborg- and Stockholm-class corvettes.
The F-35 was the product of the Joint Strike Fighter (JSF) program, which was the merger of various combat aircraft programs from the 1980s and 1990s. One progenitor program was the Defense Advanced Research Projects Agency (DARPA) Advanced Short Take-Off/Vertical Landing (ASTOVL) which ran from 1983 to 1994; ASTOVL aimed to develop a Harrier jump jet replacement for the U.S. Marine Corps ...
Stealth helicopters are helicopters that incorporate stealth technology to decrease an enemy's detection ability. [1] There are a diverse range of technologies used to achieve this decreased detectability; these have largely involved the reduction of several different signatures typically generated by a rotorcraft, including those of noise ...
NATO Accessory Rail (STANAG 4694) The NATO Accessory Rail (NAR), defined by NATO Standardization Agreement (STANAG) 4694, is a rail interface system standard for mounting accessory equipment such as telescopic sights, tactical lights, laser aiming modules, night vision devices, reflex sights, foregrips, bipods and bayonets to small arms such as rifles and pistols.
The Bofors 57 mm Naval Automatic Gun L/70 (Swedish: 57 mm sjöautomatkanon L/70 (57 mm SAK 70)), [1] [2] among other names, is a series of dual-purpose naval guns designed and produced by the Swedish arms manufacturer AB Bofors (since March 2005 part of BAE Systems AB), designed in the late 1960s as a replacement design for the twin barreled Bofors 57 mm Naval Automatic Gun L/60.
The Boeing–Sikorsky RAH-66 Comanche is an American stealth armed reconnaissance and attack helicopter designed for the United States Army.Following decades of study and development, the RAH-66 program was cancelled in 2004 before mass production began, by which point nearly US$7 billion had been spent on the program.