Le Cercle des ufologues Index du Forum

Le Cercle des ufologues
Forum d'études du phénomène ufologique
 
ProfilProfil   Se connecter pour vérifier ses messages privésSe connecter pour vérifier ses messages privés   ConnexionConnexion   FAQFAQ   RechercherRechercher   MembresMembres   GroupesGroupes S’enregistrerS’enregistrer

U.S. to shoot down errant satellite

 
Poster un nouveau sujet   Répondre au sujet    Le Cercle des ufologues Index du Forum -> Forum in English -> General topics -> News in English
Sujet précédent :: Sujet suivant  
Auteur Message
Kalinoux
Administrateur
Administrateur

Hors ligne

Inscrit le: 01 Sep 2006
Messages: 1 361
Localisation: Nantes
J'accepte La charte: Oui j'ai lu et pris connaissance de la charte, j'e l’accepte et je m’engage à la respécter

MessagePosté le: 14/02/2008 21:03:35    Sujet du message: U.S. to shoot down errant satellite Répondre en citant

Hello,

I think we all heard in the last couples of weeks about the spy satellite which seems to be now not anymore under control. To avoid the risk of this satellite falling on earth, the solution could be to shoot it down.

Source Arrow Spy_Satellite_CNN

Citation:
AP: U.S. to shoot down errant satellite

WASHINGTON (AP) -- The Pentagon is planning to shoot down a broken spy satellite expected to hit the Earth in early March, The Associated Press has learned.



Citation:
U.S. officials said Thursday that the option preferred by the Bush administration will be to fire a missile from a U.S. Navy cruiser, and shoot down the satellite before it enters Earth's atmosphere.

The officials spoke on condition of anonymity because the options will not be publicly discussed until a later Pentagon briefing.

The disabled satellite is expected to hit the Earth the first week of March. Officials said the Navy would likely shoot it down before then, using a special missile modified for the task. Other details about the missile and the targeting were not immediately available.

But the decision involves several U.S. agencies, including the National Security Agency, the Department of Homeland Defense and the State Department. Shooting down a satellite is particularly sensitive because of the controversy surrounding China's anti-satellite test last year, when Beijing shot down one of its defunct weather satellites, drawing immediate criticism from the U.S. and other countries.

A key concern at that time was the debris created by Chinese satellite's destruction -- and that will also be a focus now, as the U.S. determines exactly when and under what circumstances to shoot down its errant satellite.

The military will have to choose a time and a location that will avoid to the greatest degree any damage to other satellites in the sky.

Also, there is the possibility that large pieces could remain, and either stay in orbit where they can collide with other satellites or possibly fall to Earth.

It is not known where the satellite will hit. But officials familiar with the situation say about half of the 5,000-pound spacecraft is expected to survive its blazing descent through the atmosphere and will scatter debris -- some of it potentially hazardous -- over several hundred miles.

The officials spoke on condition of anonymity because of the sensitivity of the matter.

The satellite is outfitted with thrusters -- small engines used to position it in space. They contain the toxic rocket fuel hydrazine, which can cause harm to anyone who contacts it.

A U.S. official confirmed earlier that the spy satellite is designated by the military as US 193, according to an AP report.

It was launched in December 2006 but almost immediately lost power and cannot be controlled. It carried a sophisticated and secret imaging sensor but the satellite's central computer failed shortly after launch


How many satellites like that have we over our heads mmm

Kalinoux Religieux
_________________
RGB - Serenity is not freedom from the storm but peace within the storm (Native American Proverb)
Revenir en haut
Publicité






MessagePosté le: 14/02/2008 21:03:35    Sujet du message: Publicité

PublicitéSupprimer les publicités ?
Revenir en haut
Kalinoux
Administrateur
Administrateur

Hors ligne

Inscrit le: 01 Sep 2006
Messages: 1 361
Localisation: Nantes
J'accepte La charte: Oui j'ai lu et pris connaissance de la charte, j'e l’accepte et je m’engage à la respécter

MessagePosté le: 17/02/2008 18:58:07    Sujet du message: U.S. to shoot down errant satellite Répondre en citant

About the same issue :

Arrow Spy satellite

Citation:
Operation Rogue Satellite: The Latest


Citation:
A bunch of new details emerged overnight about the planned shootdown of a dying spy satellite.

In the works since January. "The order to launch the crash program came Jan. 4... [with] a final go-ahead decision by President Bush this week," the AP reports.

The initial order was twofold: Assess whether shooting down the satellite with a missile was even possible, and at the same time urgently piece together the technological tools it would take to succeed.

In a matter of weeks, three Navy warships — the USS Lake Erie, USS Decatur and USS Russell — were outfitted with modified Aegis anti-missile systems, the ships' crews were trained for an unprecedented mission, and three SM-3 missiles were pulled off an assembly line and given a new guidance system.


Giant golf ball deployed. CNN says that "a floating X-band radar has to be modified to track the satellite's trajectory." That would be the massive -- and massively controversial -- Sea-Based X-Band Radar. The $815 million, 28-story, orb-like contraption has the ability, in theory, to tell which way a baseball is spinning -- from 3,000 miles away. But it's also proven to susceptible to the elements and high seas. The thing has been in and out of the repair shop for years.

Big bucks. "The attempt by the U.S. Navy to use an anti-missile missile to shoot down a potentially hazardous satellite will cost between $40 million and $60 million, Pentagon officials told CNN. "The missile alone costs almost $10 million."

Your chances of being hit by the falling satellite: one in a trillion. "Compared with, for example, a one in 1.4 million chance of being hit by lightning in the United States," the Discovery Channel notes.

FEMA to the rescue? "With an eye to the possibility that the missile effort will fail, the government has placed six rescue teams across the country to be prepared to act if the satellite hits the United States," according to the AP.

The spacecraft contains 1,000 pounds of hydrazine in a tank that is expected to survive re-entry and a fuel tank liner made of beryllium.

FEMA has prepared a guide for emergency responders that includes information about hydrazine and beryllium. The agency warns officials not to pick up any debris or provide mouth-to-mouth resuscitation to anyone who has inhaled hydrazine or beryllium.

Old news for NASA chief? Some were surprised to see NASA head honcho Michael Griffin helping plan this operation. They shouldn't be. Not only does he have to worry about what happens to the Shuttle and the Space Station. But he was "deputy for technology at the Strategic Defense Initiative Organization and worked on missile defense systems from 1986 to 1991."


Some others links are articles are available at the link mentionned above.

Kalinoux
_________________
RGB - Serenity is not freedom from the storm but peace within the storm (Native American Proverb)
Revenir en haut
Kalinoux
Administrateur
Administrateur

Hors ligne

Inscrit le: 01 Sep 2006
Messages: 1 361
Localisation: Nantes
J'accepte La charte: Oui j'ai lu et pris connaissance de la charte, j'e l’accepte et je m’engage à la respécter

MessagePosté le: 23/02/2008 12:49:31    Sujet du message: U.S. to shoot down errant satellite Répondre en citant

You can see here the official announce of the destruction by US Army (with the video of the missile launch)

Arrow BBC news

Kalinoux
_________________
RGB - Serenity is not freedom from the storm but peace within the storm (Native American Proverb)
Revenir en haut
Contenu Sponsorisé






MessagePosté le: 27/05/2017 15:54:05    Sujet du message: U.S. to shoot down errant satellite

Revenir en haut
Montrer les messages depuis:   
Poster un nouveau sujet   Répondre au sujet    Le Cercle des ufologues Index du Forum -> Forum in English -> General topics -> News in English
Toutes les heures sont au format GMT + 2 Heures
Page 1 sur 1

 
Sauter vers:  

Portail | Index | Créer un forum | Forum gratuit d’entraide | Annuaire des forums gratuits | Signaler une violation | Conditions générales d'utilisation



Powered by phpBB © 2001, 2017 phpBB Group
Traduction par : phpBB-fr.com
MylMatriX theme for phpBB version 2+
Created by SGo
Based on the original subSilver Created by subBlue design