Showing posts with label Insertion. Show all posts
Showing posts with label Insertion. Show all posts

Friday, October 17, 2014

ESA Ariane 5 Launch and Orbital insertion of Intelsat 30 and ARSAT-1

On 16 October 2014, Ariane 5 flight VA220 lifted off from Europe’s Spaceport in Kourou, French Guiana to place two telecommunications satellites, Intelsat-30/DLA-1 and Arsat-1, into their planned transfer orbits. 

Credit: ESA

An Ariane 5 has lifted off from Europe's Spaceport in Kourou, French Guiana and delivered two telecom satellites, Intelsat-30/DLA-1 and Arsat-1, into their planned orbits.

Launch of flight VA220 occurred on 16 October at 21:44 GMT (23:44 CEST, 18:44 local time).

Intelsat-30/DLA-1, with a mass of about 6320 kg and mounted with its launch vehicle adapter on top of Ariane's Sylda dual-payload carrying structure, was the first to be released 28 minutes into the mission.


On 16 October 2014, Ariane 5 flight VA220 lifted off from Europe’s Spaceport in French Guiana and delivered two telecom satellites, Intelsat-30/DLA-1 and Arsat-1, into their planned orbits. 

Credit: ESA/Arianespace

Following a series of burns controlled by Ariane's computer, the Sylda structure encasing Arsat-1 was then jettisoned. Arsat-1, with a mass of 2973 kg, was released into its own transfer orbit about six minutes after the first satellite.

Intelsat-30/DLA-1, owned and operated by Intelsat, will be positioned at 95°W longitude in geostationary orbit to provide telecommunications and direct-to-home broadcast services to Latin America. The satellite has a design life of about 15 years.

Arsat-1, owned by Arsat in Argentina, will be positioned at 71.8°W in geostationary orbit to provide direct-to-home television, Internet access services, data transmission and IP telephony to Argentina and neighbouring countries. It has a design life of 15 years.

The payload mass for this launch was 10 083 kg. The satellites totalled 9293 kg, with payload adapters and carrying structures making up the rest.

Flight VA220 was the 76th Ariane 5 mission.

Wednesday, September 24, 2014

ISRO: India's Mars Orbiter successfully inserted into orbit around MARS

TV Screens show Indian Prime Minister Narendra Modi greeting Indian Space Research Organisation (ISRO) scientists and other officials after the success of Mars Orbiter Mission at their Telemetry, Tracking and Command Network complex in Bangalore, India, Wednesday, Sept. 24, 2014. 

India triumphed in its first interplanetary mission, placing a satellite into orbit around Mars on Wednesday morning and catapulting the country into an elite club of deep-space explorers. 

Credit: AP Photo/Aijaz Rahi

India triumphed in its first interplanetary mission, placing a satellite into orbit around Mars on Wednesday morning and catapulting the country into an elite club of deep-space explorers.

Scientists broke into wild cheers as the orbiter's engines completed 24 minutes of burn time to maneuver the spacecraft into its designated place around the red planet.

"We have gone beyond the boundaries of human enterprise and innovation," Prime Minister Narendra Modi said, standing alongside scientists with the Indian Space and Research Organisation (ISRO) at the command center in the southern tech hub of Bangalore.

"We have navigated our craft through a route known to very few," Modi said, congratulating the scientists and "all my fellow Indians on this historic occasion."

Scientists described the final stages of the Mars Orbiter Mission, affectionately nicknamed MOM, as flawless.

The success marks a milestone for the space program in demonstrating that it can conduct complex missions and act as a global launch pad for commercial, navigational and research satellites.

It's also a major feat for the developing country of 1.2 billion people, most of whom are poor.

At the same time, India has a robust scientific and technical educational system that has produced millions of software programmers, engineers and doctors, propelling many into the middle class.

Getting a spaceship successfully into orbit around Mars is no easy task. More than half the world's previous attempts, 23 out of 41 missions, have failed, including the Beagle-2 from the UK and Nozomi by Japan in 1999.

Indian Space Research Organization scientists and other officials cheer as they celebrate the success of Mars Orbiter Mission at their Telemetry, Tracking and Command Network complex in Bangalore, India, Wednesday, Sept. 24, 2014. 

Credit: AP Photo/Aijaz Rahi

The United States had its first success with a 1964 flyby by a spacecraft called Mariner 4, returning 21 images of the surface of the planet.

The former Soviet Union MARS-3 reached the planet in 1971, and the European Space Agency Mars Express in 2003, still operating successfully around Mars.

The U.S. space agency NASA congratulated India in a Twitter message welcoming MOM to studying the red planet.

On Sunday, NASA achieved its own success in placing its Mars Atmosphere and Volatile Evolution mission (Maven), in position.

The U.S. has two more satellites circling the planet at the moment, as well as two rovers rolling across the rocky Martian surface.

The ESA's Mars Express, launched over a decade ago, is still operating as well.

India was particularly proud that MOM was developed with homegrown technology and for a bargain price of about $75 million, a cost that Modi quipped was lower than many Hollywood film budgets.

By comparison, NASA's much larger Maven mission cost nearly 10 times as much at $671 million.

The real test of these missions will come when the scientific data is gathered and returned for examination.

In this Sept. 11, 2013, file photo, Indian engineers work on the Mars orbiter spacecraft at the satellite center of Indian Space Research Organization (ISRO) in Bangalore, India.

Credit: AP Photo/Aijaz Rahi, File

Indian scientists "designed the trajectory aspects and the interplanetary aspects," said Vipparthi Adimurthy of the Indian Institute of Space Science and Technology, who headed the team that crafted the first feasibility studies on whether India could reach Mars.

Dr Adimurthy
"Today not only has a dream come true, but we have created history for India, for ISRO, and for the world," he said.

The 1,350-kilogram (nearly 3,000-pound) orbiter will now circle the planet for at least six months, with five solar-powered instruments gathering scientific data that may shed light on Martian weather systems as well as what happened to the water that is believed to have existed once on Mars in large quantities.

The 15 kgs payloads on the Mars Orbiter Mission include:

Lyman Alpha Photometer (LAP), an absorption cell photometer that measures relative abundance of deuterium and hydrogen from Lyman-alpha emission in the Martian upper atmosphere.

Methane Sensor for Mars (MSM), designed to measure methane in the Martian atmosphere with PPB accuracy and map its sources.

Mars Exospheric Neutral Composition Analyser (MENCA), a quadruple mass spectrometer capable of analysing the neutral composition in the range of 1 to 300 amu with unit mass resolution.

Mars Colour Camera (MCC), a tri-colour camera that gives images and information about the surface features and composition of Martian surface.

Thermal Infrared Imaging Spectrometer (TIS) to measure the thermal emissions and, because it is not using visible light, this instrument can be operated both during th day and night.

Temperature and emissivity are two basic physical parameters estimated from thermal emission measurement.

Wednesday, September 17, 2014

NASA Maven: Set to slide into orbit around Mars



NASA's MAVEN spacecraft is quickly approaching Mars on a mission to study its upper atmosphere. 

When it arrives on September 21, 2014, MAVEN's winding journey from Earth will culminate with a dramatic engine burn, pulling the spacecraft into an elliptical orbit.

On Sept. 21, 2014, the Mars Atmosphere and Volatile Evolution spacecraft will complete roughly 10 months of travel and enter orbit around the Red Planet.

The orbit-insertion maneuver will be carried out as the spacecraft approaches Mars, wrapping up an interplanetary journey of 442 million miles (711 million kilometers).

Six thruster engines will fire briefly for a “settling” burn that damps out deviations in pointing.

Then the six main engines will ignite two by two in quick succession and will burn for 33 minutes to slow the craft, allowing it to be captured in an elliptical orbit.

This milestone will mark the culmination of 11 years of concept and development for MAVEN, setting the stage for the mission’s science phase, which will investigate Mars as no other mission has.

“We’re the first mission devoted to observing the upper atmosphere of Mars and how it interacts with the sun and the solar wind,” said Bruce Jakosky, principal investigator for MAVEN at the University of Colorado in Boulder.

These observations will help scientists determine how much gas from Mars’ atmosphere has been lost to space throughout the planet’s history and which processes have driven that loss.

Procedures to line up MAVEN for proper orbit insertion began shortly after MAVEN launched in November 2013. These included two trajectory-correction maneuvers, performed in December 2013 and February 2014.

MAVEN's instrument payload
Calibration of the mission’s three suites of science instruments, the Particles and Fields Package, the Remote Sensing Package and the Neutral Gas and Ion Mass Spectrometer (NGIMS), was completed during the cruise phase to Mars.

“Every day at Mars is gold,” said David Mitchell, MAVEN’s project manager at NASA’s Goddard Space Flight Center in Greenbelt, Maryland.

“The early checks of instrument and spacecraft systems during cruise phase enable us to move into the science collection phase shortly after MAVEN arrives at Mars.”

The voyage also gave the team an opportunity to take data on the interplanetary solar wind using the Fields and Particles Package.

Meanwhile, teams in California, Colorado and Maryland carried out rehearsals of the entire orbit insertion twice.

The science team also performed a weeklong simulation of the planning and implementation required to obtain science data. Two months prior to arrival at Mars, all instruments were turned off, in preparation for orbit insertion.

Tuesday, April 30, 2013

ESA-EDA DESIRE Flight Demonstration On RPA Systems Insertion Into Civil Airspace

DESIRE has undertaken a series of test flights to demonstrate the role of satellite communications for integrating in civil and military airspace RPAS flight Beyond Line of Sight (BLOS).

San Javier Air Base (Murcia) was selected to conduct the trials and demonstrate that satellite communications are suitable to operate Remotely Piloted Aircraft Systems (RPASs) and integrate them into civil airspace.

The DeSIRE project (Demonstration of Satellites enabling the Insertion of RPAS in Europe) is funded by the European Space Agency (ESA) and the European Defence Agency (EDA) within an initiative to support the utilisation of RPAS complemented by satellites for commercial and governmental applications.

To undertake this project the consultancy and technology multinational Indra (Spain) leads a European industrial consortium formed by AT-One (Germany and the Netherlands), SES ASTRA (Luxembourg), Thales Alenia Space (Italy and France) and CIRA (Italy).

DESIRE has undertaken a series of test flights to demonstrate the role of satellite communications for integrating in civil and military airspace RPAS flight Beyond Line of Sight (BLOS). The concepts and applicable procedures were defined in the precursor feasibility studies.

In particular, the flight completed this Wednesday provided a generic terrestrial and maritime surveillance service, demonstrating the dual use of RPAS.

In the presence of the Chief of Staff of the Air Force, Francisco Javier Garcia-Arnaiz, an aircraft without a pilot on board took off from the San Javier runway at 11:00 a.m. on Wednesday 24 April and completed a 6-hour flight in civil and military airspace.

The operation was timed to coincide with civil and military flights operating from the base, which shares its facilities with Murcia Airport.