Radar Altimeters
In the context of aerospace engineering, radar altimeters, also known as radio altimeters, are electronic devices used on aircraft to measure the altitude above the ground level during the flight. They work by emitting radio waves downwards and then measuring the time it takes for the signal to bounce back after hitting the ground surface. The speed of the radio wave is known, so the time it takes to return can be used to calculate the distance travelled, and hence the altitude of the aircraft. Radar altimeters are crucial for safe landing procedures, especially in poor visibility conditions, as they provide accurate altitude readings close to the ground. They are also used in terrain-following radar allowing aircraft to fly at a constant altitude above the ground level. In space exploration, radar altimeters are used in spacecraft for determining the altitude above the planetary surfaces.
Your Previous Searches
Random Picks
- Sputnik 1: Sputnik 1 was the first artificial Earth satellite launched by the Soviet Union on October 4, 1957. It was a 58 cm diameter polished metal sphere, with four external radio antennas to broadcast radio pulses. The satellite completed an orbit ... Read More >>
- Thermostats: In the context of space and astronautical engineering, thermostats are devices used to regulate temperature in spacecraft and space habitats. They work by sensing the temperature of the surrounding environment and activating heating or cool ... Read More >>
- Ultraviolet Radiation: Ultraviolet radiation (UV) is a type of electromagnetic radiation with a wavelength range of 10 nm to 400 nm. In space and astronautical engineering, UV radiation is a significant factor in the design and operation of spacecraft and spacesu ... Read More >>
Top News
Orionids meteor shower is this weekend: Where and when to watch its peak...
Orionids meteor shower is this weekend: Where and when to watch its peakgo.com...
News Source: ABC News on 2024-10-18
Acting or hosting, Travis Kelce wants to continue to pursue a showbiz career. Bu...
Travis Kelce is the host of “Are You Smarter Than a Celebrity?”...
News Source: ABC News on 2024-10-09
Now is a great time to see Saturn in all its ringed glory...
My first sight of Saturn through a telescope inspired my love of space. Dig out your telescopes or visit your local astronomy club, and you may be lucky enough to spot our sixth planet's stunning thic...
News Source: New Scientist on 2024-10-09
Was Bruce Willis right? Could a nuclear blast save us from killer asteroid?...
Scientists simulated a nuclear explosion using x-ray pulses to push an asteroid-like rock away in space-like conditions....
News Source: Al Jazeera English on 2024-10-04
China's answer to SpaceX's Starlink is also threatening astronomy...
The first 18 satellites of a planned Chinese mega constellation are brighter than all but 500 stars in the sky, raising fears of a huge impact on astronomy...
News Source: New Scientist on 2024-10-03