Jet Propulsion
| Use attributes for filter ! | |
| Google books | books.google.com |
|---|---|
| Originally published | December 11, 1997 |
| Authors | N. A. Cumpsty |
| Date of Reg. | |
| Date of Upd. | |
| ID | 2059688 |
About Jet Propulsion
Now in its third edition, Jet Propulsion offers a self-contained introduction to the aerodynamic and thermodynamic design of modern civil and military jet engine design. Through two-engine design projects for a large passenger and a new fighter aircraft, the text explains modern engine design. . . .
Voyager 2: Nasa fully back in contact with lost space probe
... The antenna had been bombarding Voyager 2 s area with the correct command, in the hope of somehow making contact, Nasa s Jet Propulsion Laboratory, which manages the Voyager missions, said...
Voyager 2: Nasa loses contact with record-breaking probe after sending wrong command
... The antenna will also bombard Voyager 2 s area with the correct command, in the hope it makes contact with the probe, said Nasa s Jet Propulsion Laboratory, which manages the Voyager missions...
Asteroid headed toward Earth may arrive on Valentine's Day 2046 - Nasa
... A ranking of 1 means that an actual collision is extremely unlikely and no cause for public concern, Nasa s Jet Propulsion Laboratory (JPL) says...
Star Wars spacecraft designer Colin Cantwell dies aged 90
... During the 1960s space race between the US and Russia, Cantwell worked at the Jet Propulsion Laboratory and Nasa, helping the American public to better understand the flights...
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Asteroid headed toward Earth may arrive on Valentine's Day 2046 - Nasa
By Brandon DrenonBBC News, Washington
A newly detected asteroid has a very small chance of impacting The Earth in 2046, Nasa tweeted on Tuesday.
If it does hit, the asteroid, roughly the size of an Olympic Swimming pool, may arrive on according to Nasa calculations.
The closest the asteroid is expected to get to Earth is about 1. 1 million miles (1. 8m km), Nasa says.
But researchers are still collecting data, which they say may change predictions.
The asteroid, dubbed 2023 DW, has about a 1 in 560 chance of hitting Earth, according to Nasa. It's the only space rock on Nasa's risk list that ranks a 1 on the Torino Impact Hazard Scale.
The scale, which goes from 0-10, measures The Risk of space objects colliding with Earth. All other objects on the scale rank 0, indicating no risk for impact.
A ranking of 1 means that an actual collision is extremely unlikely and no cause for public concern, Nasa's Jet Propulsion Laboratory (JPL) says.
" This object is not particularly concerning, " JPL navigation engineer Davide Farnocchia .
If it does collide With Us , 2023 DW would not have the same doomsday effect as the asteroid that decimated The Earth 's dinosaurs 66 million years ago. That asteroid was far bigger at 7. 5 miles (12km) wide, says.
But an impact from 2023 DW could still cause significant damage if it were to land atop a major city or densely populated area. A meteor less than half the size of 2023 DW exploded over Chelyabinsk, Russia, 10 Years ago, causing a Shock Wave that blew out windows across 200 square miles and injured roughly 1,500 people.
While contact with an asteroid seems unlikely, scientists have been preparing for such An Encounter for years. Last October, Nasa confirmed The Agency 's Double Asteroid Redirection Test (Dart) mission had successfully changed the travel path of a small asteroid by slamming a spacecraft into it.
" That's the very reason why we flew that mission, " Mr Farnocchia said, " and that mission was a spectacular success. "
Related TopicsSource of news: bbc.com