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Space Shuttle Challenger breaks up during its 1986 launch resulting in the death of all seven crew members. This article lists verifiable spaceflight-related accidents and incidents resulting in human death or serious injury. These include incidents during flight or training for crewed space missions and testing, assembly, preparation, or flight of crewed and robotic spacecraft. Not included ...
The output from the benchmark is the number of Dhrystones per second (the number of iterations of the main code loop per second). Both Whetstone and Dhrystone are synthetic benchmarks, meaning that they are simple programs that are carefully designed to statistically mimic the processor usage of some common set of programs. Whetstone, developed ...
Continuous performance task. A continuous performance task, continuous performance test, or CPT, is any of several kinds of neuropsychological test that measures a person's sustained and selective attention. Sustained attention is the ability to maintain a consistent focus on some continuous activity or stimuli, and is associated with impulsivity.
IFT-3 →. SpaceX Starship Integrated Flight Test 2 ( IFT-2) was the second integrated flight test of SpaceX Starship launch vehicle. SpaceX performed the flight test on November 18, 2023. [4] The mission's primary objectives were for the vehicle to hot stage —a new addition to Starship's flight profile—followed by the second stage ...
A cryogenic proof test was performed on June 15, 2020, achieving a pressure of 7.6 bar (110 psi) before a leak occurred. During a pressurize to failure test on June 23, 2020, the tank burst at an unknown pressure. SN7.1 was the second 304L test tank, with the goal of reaching a higher failure pressure.
The Whetstone benchmark is a synthetic benchmark for evaluating the performance of computers. [1] It was first written in ALGOL 60 in 1972 at the Technical Support Unit of the Department of Trade and Industry (later part of the Central Computer and Telecommunications Agency) in the United Kingdom. It was derived from statistics on program ...
A typical method of performing a measurement is to transfer a 'large' file from one system to another system and measure the time required to complete the transfer or copy of the file. The throughput is then calculated by dividing the file size by the time to get the throughput in megabits, kilobits, or bits per second.
After observing the system for two and a half years, four independent tests of general relativity were possible, the most precise (the Shapiro delay) confirming the general relativity prediction within 0.05% (nevertheless the periastron shift per orbit is only about 0.0013% of a circle and thus it is not a higher-order relativity test).