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A rechargeable battery, storage battery, or secondary cell (formally a type of energy accumulator), is a type of electrical battery which can be charged, discharged into a load, and recharged many times, as opposed to a disposable or primary battery, which is supplied fully charged and discarded after use.
Wallis is the proprietor of a heating company. Upon first becoming acquainted with YouTube, he assumed that the platform was a forum for posting viral joke videos. After posting a video of himself camping in -32°C weather, and seeing the enthusiastic response it garnered in the comments section, he decided to focus on creating more of this type of content. [2]
After examining the video that same day, U.S. officials confirmed that the drone was genuine. [34] [35] In April 2012, General Amir Ali Hajizadeh, the commander of the Islamic Revolutionary Guard Corps aerospace division, claimed that Iran had reverse-engineered the RQ-170, and was building a copy of the UAV. He also stated that data were being ...
The SR-71 carried a Fairchild tracking camera and an infrared camera, [111] both of which ran during the entire mission. As the SR-71 had a second cockpit behind the pilot for the RSO, it could not carry the A-12's principal sensor, a single large-focal-length optical camera that sat in the "Q-Bay" behind the A-12's single cockpit.
Stealth technology, also termed low observable technology (LO technology), is a sub-discipline of military tactics and passive and active electronic countermeasures. [1] The term covers a range of methods used to make personnel, aircraft , ships , submarines , missiles , satellites , and ground vehicles less visible (ideally invisible ) to ...
Stealth aircraft are still vulnerable to detection while and immediately after using their weaponry. Since stealth payload (reduced RCS bombs and cruise missiles) is not yet generally available, and ordnance mount points create a significant radar return, stealth aircraft carry all armaments internally. As soon as weapons bay doors are opened ...
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F-117 Nighthawk F-117 flying over mountains in Nevada in 2002 General information Type Stealth attack aircraft National origin United States Manufacturer Lockheed Corporation Status Retired from combat, used as training aircraft as of 2025 Primary user United States Air Force Number built 64 (5 YF-117As, 59 F-117As) History Introduction date October 1983 ; 41 years ago (1983-10) First flight ...