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March 13, 2016

ExoMars 2016

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ESA dixit:

“Animation visualizing milestones during the launch of the ExoMars 2016 mission and its cruise to Mars. The mission comprises the Trace Gas Orbiter and an entry, descent and landing demonstrator module, Schiaparelli, which are scheduled to be launched on a four-stage Proton-M/Breeze-M rocket from Baikonur during the 14–25 March 2016 window.

About ten-and-a-half hours after launch, the spacecraft will separate from the rocket and deploy its solar wings. Two weeks later, its high-gain antenna will be deployed. After a seven-month cruise to Mars, Schiaparelli will separate from TGO on 16 October. Three days later it will enter the martian atmosphere, while TGO begins its entry into Mars orbit.

[The second animation presents] The paths of the ExoMars 2016 Trace Gas Orbiter (TGO) and the Schiaparelli entry, descent and landing demonstrator module arriving at Mars on 19 October (right and left, respectively). The counter begins at the start of a critical engine burn that TGO must conduct in order to enter Mars orbit. The altitude above Mars is also indicated, showing the arrival of Schiaparelli on the surface and the subsequent trajectory of TGO. The orbiter’s initial 4-day orbit will be about 250 x 100 000 km. Starting in December 2016, the spacecraft will perform a series of aerobraking manoeuvres to steadily lower it into a circular, 400 km orbit (not shown here).”

Video credit: ESA

 

February 27, 2016

Space debris

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ESA dixit:

“The story of space debris highlighting how the unintended consequences of intense spaceflight activity during the past 60 years has resulted in a growing population of debris objects that pose hazards to safe space navigation. In 2013, experts estimated that 29 000 objects larger than 10 cm were orbiting Earth. The video also highlights the current state of debris mitigation measures and presents several concepts for removing defunct satellites from economically vital orbits now being studied by space agencies and industry across Europe.”

Video credit: ESA

 

February 13, 2016

ULA Vulcan

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Wikipedia dixit:

“ULA plans an “incremental approach” to rolling out the vehicle and its technologies. Deployment will begin with the first stage, based on the Delta IV’s fuselage diameter and production process and is expected to use two BE-4 engines. Aerojet Rocketdyne’s AR-1 engine is being retained by ULA as a contingency option, with a final decision to be made in 2016. The first stage can have from zero to six solid rocket boosters (SRBs), and in the maximal configuration could launch a heavier payload than the highest-rated Atlas V, though still less than the Delta IV Heavy. A later feature is planned to make the first stage partly reusable. ULA plans to develop the technology to allow the engines to detach from the vehicle after cutoff, descend through the atmosphere with a heat shield and parachute, and finally be captured by a helicopter in mid-air. In April 2015, ULA estimated that reusing the engines would reduce the cost of the first stage propulsion by 90%, with propulsion being 65% of the total first stage build cost.

Initial configurations of Vulcan will use the same Centaur upper stage as the Atlas V, with its existing RL-10 engines. A later advanced cryogenic upper stage — called the Advanced Cryogenic Evolved Stage (ACES) — is conceptually planned for full development by ULA in the late 2010s. ACES would be LOX and liquid hydrogen (LH2) powered by one to four rocket engines yet to be selected. This upper stage will include the Integrated Vehicle Fluids technology that could allow long on-orbit life of the upper stage, measured in weeks rather than hours.”

Video credit: ULA

 

February 7, 2016

The European Data Relay System

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ESA dixit:

“The European Data Relay System (EDRS) is the most sophisticated laser communication network ever designed. Dubbed the ‘SpaceDataHighway’, EDRS will help Earth-observing satellites to transmit large quantities of potentially life-saving data down to Europe in near-real time.

EDRS consists of two geostationary nodes and an extensive network of European ground and control centres. The first half of the EDRS space segment is a hosted package on a Eutelsat telecom satellite (EDRS-A, at 9° East) and the second is a dedicated satellite using the SmallGEO platform (EDRS-C, at 31° East). The main EDRS Mission Operation Centre is in Ottobrunn (DE) and managed by Airbus. The backup system is in Redu (BE), also managed by Airbus. MOCs manage the data they receive from both the control centres and the users. EDRS has ground stations across Western Europe, with its payload and spacecraft control centres in Oberpfaffenhofen (DE), managed by the DLR German Space Center. The receiving data and feeder link ground stations are in Redu, Harwell (GB), Weilheim (DE) and Matera (IT), and they pass on the information to the satellite owners. Satellite owners can also use EDRS to give their satellites new instructions in near-real time.”

Video credit: ESA

 

January 28, 2016

Remember Fallen Heroes

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They will always be remembered…

Apollo 1 (January 27, 1967)

Virgil “Gus” Grissom – Commander, Edward White – Command Pilot, Roger Chaffee – Pilot

STS-51 L (January 28, 1986)

Francis R. Scobee – Commander, Michael J. Smith – Pilot, Judith A. Resnik – Mission Specialist 1, Ellison Onizuka – Mission Specialist 2, Ronald E. McNair – Mission Specialist 3, Gregory B. Jarvis – Payload Specialist 1, Sharon Christa McAuliffe – Payload Specialist 2

STS-107 (February 1, 2003)

Rick D. Husband – Commander, William C. McCool – Pilot, Michael P. Anderson – Payload Commander, David M. Brown – Mission Specialist 1, Kalpana Chawla – Mission Specialist 2, Laurel Clark – Mission Specialist 3, Ilan Ramon – Payload Specialist 1

Video credit: NASA

 

January 24, 2016

Jason-3 Launch

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NASA dixit:

“Jason-3, a U.S.-European oceanography satellite mission with NASA participation that will continue a nearly quarter-century record of tracking global sea level rise, lifted off from Vandenberg Air Force Base in California Sunday, Jan. 17, at 1:42 p.m. EST aboard a SpaceX Falcon 9 rocket. Jason-3 is an international mission led by the National Oceanic and Atmospheric Administration (NOAA) in partnership with NASA, the French space agency CNES, and the European Organisation for the Exploitation of Meteorological Satellites.”

NASA JPL dixit:

“Jason-3 is the fourth mission in U.S.-European series of satellite missions that measure the height of the ocean surface. Launched on January 17, 2016, the mission will extend the time series of ocean surface topography measurements (the hills and valleys of the ocean surface) begun by the TOPEX/Poseidon satellite mission in 1992 and continuing through the Jason-1 (launched in 2001) and the currently operating OSTM/Jason-2 (launched in 2008) missions. These measurements provide scientists with critical information about circulation patterns in the ocean and about both global and regional changes in sea level and the climate implications of a warming world.

The primary instrument on Jason-3 is a radar altimeter. The altimeter will measure sea-level variations over the global ocean with very high accuracy (as 1.3 inches or 3.3 centimeters, with a goal of achieving 1 inch or 2.5 centimeters). Continual, long-term, reliable data of changes in ocean surface topography will be generated and will be used by scientists and operational agencies (NOAA, European weather agencies, marine operators, etc.) for scientific research and operational oceanography for the benefit of society.

TOPEX/Poseidon and Jason-1 were cooperative missions between NASA and the French space agency, CNES. Additional partners in the Jason-2 mission included NOAA and Eumetsat. Jason-3 continues the international cooperation, with NOAA and Eumetsat leading the efforts, along with partners NASA and CNES.”

Video credit: NASA