Business
A small team of environmental scientists has found via simulations that rerouting commercial airplanes to reduce contrails would be less expensive than previously thought. In their study, published in the journal Environmental ...
Automotive
U.S. aerospace company Stratolaunch conducted the first powered test flight of a new unmanned craft for hypersonic research on Saturday and called it a success.
Mar 10, 2024
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85
Energy & Green Tech
American Airlines and Google were able to cut contrails made by jets by more than half during a small trial, a move that could significantly reduce the global-warming footprint of the travel industry, but with a slight increase ...
Aug 15, 2023
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41
Robotics
Drones are operating increasingly in areas out of sight of the person controlling them. However, conventional remote controls have a limited range, which makes them unsuitable for these flights. On the other hand, simple ...
Feb 3, 2023
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189
Engineering
A new approach uses aerial imaging to generate 3D models of cities and regions with advanced precision, enabling urban planners to incorporate full-scale designs of all types of architectural and urban structures.
Dec 13, 2022
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144
Energy & Green Tech
Aviation is a big user of fossil fuels and, as such, is a heavy producer of carbon emissions. Sustainability is high on the agenda. New work in the International Journal of Sustainable Aviation has reviewed the thermo-physical ...
Nov 7, 2022
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16
Engineering
Russia used a hypersonic missile against a Ukrainian arms depot in the western part of the country on March 18, 2022. That might sound scary, but the technology the Russians used is not particularly advanced. However, next-generation ...
Apr 18, 2022
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83
Energy & Green Tech
Hydropower has massive potential as a source of clean electricity, and the Indus basin can be a key player in fulfilling long-term energy storage demands across Africa, Asia, Europe, and the Middle East. IIASA researchers ...
Jul 20, 2021
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3
Telecom
Florida's Republican governor, Ron DeSantis, called this week on the administration of President Joe Biden to greenlight a plan to transmit the internet to people in Cuba via high-altitude balloons when their government has ...
Jul 17, 2021
3
4
Engineering
The gigantic Stratolaunch aircraft flew Thursday for its second time, taking to the skies over the Southern California desert
Apr 29, 2021
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121
Altitude or height is defined based on the context in which it is used (aviation, geometry, geographical survey, sport, and more). As a general definition, altitude is a distance measurement, usually in the vertical or "up" direction, between a reference datum and a point or object. The reference datum also often varies according to the context. Although the term altitude is commonly used to mean the height above sea level of a location, in geography the term elevation is often preferred for this usage.
Vertical distance measurements in the "down" direction are commonly referred to as depth.
This text uses material from Wikipedia, licensed under CC BY-SA
