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NASA G2 flywheel. Flywheel energy storage (FES) works by accelerating a rotor to a very high speed and maintaining the energy in the system as rotational energy.When energy is extracted from the system, the flywheel's rotational speed is reduced as a consequence of the principle of conservation of energy; adding energy to the system correspondingly results in an increase in the speed of the ...
Data from Bumble Bee Performance and Stress Analysis General characteristics Crew: 1 Length: 10 ft (3.0 m) Height: 7 ft 6 in (2.29 m) Empty weight: 213 lb (97 kg) Gross weight: 500 lb (227 kg) Powerplant: 1 × Rotax 447 2-cylinder air-cooled 2-stroke in-line piston engine, 40 hp (30 kW) Main rotor diameter: 23 ft (7.0 m) Propellers: 2-bladed fixed-pitch propeller Performance Maximum speed: 49 ...
Quick Charge is a proprietary technology that can charge battery-powered devices, primarily mobile phones, at power levels exceeding the 7.5 watts (5 volts at 1.5 amps) supported by the USB BC 1.2 standard, using existing USB cables.
A flammable liquid is a liquid having a flash point of not more than 60 °C (140 °F), or any material in a liquid phase with a flash point at or above 37.8 °C (100 °F) that is intentionally heated and offered for transportation or transported at or above its flash point in a bulk packaging. The following exceptions apply:
A Comp-B loaded shaped charge with a copper liner and pointed cone apex had a jet tip temperature ranging from 668 K to 863 K over a five shot sampling. Octol-loaded charges with a rounded cone apex generally had higher surface temperatures with an average of 810 K, and the temperature of a tin-lead liner with Comp-B fill averaged 842 K.
IEC 61851 is an international standard for electric vehicle conductive charging systems, parts of which are currently still under development (written 2017). IEC 61851 is one of the International Electrotechnical Commission 's group of standards for electric road vehicles and electric industrial trucks and is the responsibility of IEC Technical ...
High-temperature operating life (HTOL) is a reliability test applied to integrated circuits (ICs) to determine their intrinsic reliability. This test stresses the IC at an elevated temperature, high voltage and dynamic operation for a predefined period of time. The IC is usually monitored under stress and tested at intermediate intervals.
Guide number distances are always measured from the flash device to the subject; if the flash device is detached from the camera, the position of the camera is irrelevant. Furthermore, unless a flash device has an automatic zoom feature that follows the setting of a camera's zoom lens, guide numbers do not vary with the focal length of lenses.