Science - antares-rocket

Apr

2013

3:22pm, EDT

5 things you didn't know about the Antares rocket

NASA / Bill Ingalls

The Orbital Sciences Corp. Antares rocket is poised for launch on the Mid-Atlantic Regional Spaceport (MARS) Pad-0A at the NASA Wallops Flight Facility on Tuesday.

By Miriam Kramer
Space.com

A new private rocket is set to launch into space for the first time Wednesday, potentially marking a leap forward for American commercial spaceflight.

Orbital Sciences Corp.'s unmanned Antares rocket is slated to blast off from Virginia's Mid-Atlantic Regional Spaceport (MARS) located at NASA's Wallops Flight Facility at 5 p.m. EDT (2100 GMT) Wednesday, helping pave the way for eventual cargo missions to the International Space Station.

Orbital signed a $1.9 billion deal with NASA to fly eight unmanned supply missions using Antares and the company's robotic Cygnus spacecraft. Cygnus and Antares could be launched together on a demonstration mission to the space station as early as June, company officials say. [How to see the Antares Rocket Launch]

Here are five things you might not have known about Antares:

Antares' engines were made for the moon
The Antares rocket's first stage uses 2 Aerojet AJ26 rocket engines fueled by liquid oxygen and kerosene (RP-1). The AJ26 is based on the NK-33 engine, which was originally developed to launch Russia's giant N-1 moon rocket in the 1960s.

N-1 was the Soviet answer to America's Saturn V rocket, used to launch astronauts to the moon during the space agency's Apollo program. The Soviet heavy-lifting rocket, however, was never launched successfully.

Orbital Sciences Corp. / NASA

The design of the Antares A-ONE rocket. Liftoff for the rocket is scheduled for Wednesday evening.

It is the largest rocket ever to launch from Virginia
Wallops Flight Facility on Virginia's Eastern Shore has traditionally been NASA's launching ground for small sounding rockets and high-altitude balloon missions, but Antares' launch from MARS is helping broaden the site's scope.

Engineers refurbished an old launch pad to accommodate Antares, whose launch Wednesday is perhaps the highest-profile liftoff from Wallops since its establishment in 1945. Most big manned and unmanned American missions have historically been run from Florida's Cape Canaveral, including the space station cargo launches of Orbital's competitor, SpaceX.

Weather permitting, today's Antares launch could be seen as far south as Charleston, S.C. and as far north as Portland, Maine. The rocket should be visible as a bright streak of light in Washington, D.C., assuming clouds don't get in the way.

Antares' name has a long space legacy
The rocket's name comes from a long cosmic legacy.

"Antares" is the name of a red supergiant star in the constellation Scorpius. It's one of the largest stars ever found, with a diameter several hundred times that of the sun. The star is about 600 light-years from Earth, and is among the top 20 brightest stars in the night sky.

The Apollo Lunar Module used during the Apollo 14 mission was also named "Antares." The module brought a two-person crew down to the surface of the moon in 1971, making the "most precise landing to date," according to NASA reports.

Orbital Sciences is a key player in missile defense
The company that developed Antares has also executed about 50 major launches for the U.S. Missile Defense Agency, the Air Force and the Navy to create a robust missile defense system in the United States.

Orbital Sciences creates target vehicles used in simulations to test the missile defense systems. The firm also manufactures "interceptor boosters" that can cut off possible missile launches aimed at the country.

This test flight will deliver tiny satellites into orbit
The Cygnus mass simulator being flown on Antares will deploy a few tiny satellites for a commercial customer and NASA before burning up harmlessly in the Earth's atmosphere.

The satellite payload includes the Dove-1 nanosatellite for a commercial client and two versions of NASA Ames Research Center's Phonesats, which are about the size of a coffee cup.

Editor's note: If you snap a great photo of Orbital's Antares rocket launch that you'd like to share for a possible story or image gallery, send photos, comments and your name and location to Managing Editor Tariq Malik at spacephotos@space.com.

Visit Space.com for complete coverage of the Antares rocket launch.

Follow Miriam Kramer on Twitter and Google+. Follow us on Twitter, Facebook and Google+. Original article on Space.com.

Mar

2013

1:36pm, EDT

First launch of new private rocket set for April

Orbital Sciences

An aerial view of Wallops Island launch site that includes an artist's concept of the Antares rocket on the pad.

By Mike Wall
Space.com

The maiden launch of a new private rocket that eventually aims to loft cargo toward the International Space Station is slated for the middle of April.

The Antares rocket, which is being developed by aerospace firm Orbital Sciences Corp., will blast off for the first time April 16-18 from NASA's Wallops Flight Facility in Virginia, NASA officials said.

Antares will launch a simulated payload to a target altitude of 155 miles to 185 miles (250 to 300 kilometers). If all goes well with the test flight, which Orbital is calling A-One, the next step will be a demonstration mission to the space station using Antares and the company's robotic Cygnus capsule, company officials said.

That test run to the orbiting lab should take place later this year, Orbital has said.

Virginia-based Orbital Sciences holds a $1.9 billion NASA contract to make eight unmanned supply runs to the station with Antares and Cygnus. The space agency has also signed a $1.6 billion cargo deal with SpaceX for 12 flights with its Falcon 9 rocket and Dragon capsule.

SpaceX completed the first of these bona fide supply runs last October, and Dragon is docked to the station now on contracted mission number two. The capsule is slated to return to Earth on March 25 with about 2,670 pounds (1,210 kilograms) of scientific experiments and other gear.

The deals with Orbital and California-based SpaceX are part of NASA's effort to encourage American private spaceflight firms to fill the void left by the retirement of the agency's space shuttle fleet in 2011.

While commercial cargo deliveries are already under way, NASA also wants private spaceships to start carrying its astronauts to and from the orbiting lab by 2017. Until that happens, the agency will be dependent on Russian Soyuz spacecraft to provide this taxi service, at about $60 million per seat.

Cygnus is a cargo-only vehicle, but California-based SpaceX is working on a manned version of Dragon. Other major contenders for a NASA crew contract are Boeing and Sierra Nevada Corp., which are developing a capsule called the CST-100 and a space plane called Dream Chaser, respectively.

Follow Mike Wall on Twitter @michaeldwall. Follow us @Spacedotcom, Facebook or Google+. Originally published on SPACE.com.