Showing posts with label esa. Show all posts
Showing posts with label esa. Show all posts

Friday, December 06, 2019

ESA is in a Race Against Time to Fix ExoMars' Parachutes

Getting a probe safely to the surface of Mars is not easy: Numerous landing attempts have crashed. Sufficiently slowing a lander in the thin air requires plenty of sophisticated kit, including designer heat shields, powerful retrorockets, and, sometimes, giant airbags. But the European-Russian ExoMars mission is struggling with a bit of technology that hails from the 18th century: parachutes. High-altitude tests earlier this year revealed that ExoMars's chutes were tearing as they were pulled from their bags. The European Space Agency has turned to NASA colleagues for help, and this week, a joint team begins tests to see whether redesigned bags and chutes now work, and if not, why. It could be their last chance to fix the problem and preserve a launch scheduled for July 2020—or face another 2 years of delay.

Friday, April 26, 2019

To The MOOOON!

NASA Administrator Jim Bridenstine said the agency’s approach to moving up a human lunar landing from 2028 to 2024 will focus first on speed and then on sustainability.

In a plenary speech at the 35th Space Symposium here April 9, Bridenstine said the new approach the agency is developing in response to the goal of a human lunar landing in five years announced by Vice President Mike Pence two weeks ago will involve many of the same elements of NASA’s original plans, but in a revised order.

“All of those elements that were necessary to getting humans to the surface of the moon in 2028, all those elements still exist. The plan is still the same,” he said. That includes, he said, development of the Space Launch System and Orion spacecraft, a lunar Gateway in orbit around the moon, and lunar landers.

What will change, he said, is the schedule for developing some of those elements, which will be split into two phases. “The first phase is speed. We want to get those boots on the moon as soon as possible,” he said. “Anything that is a distraction from making that happen we’re getting rid of.”

That emphasis on speed includes launching Exploration Mission (EM) 1, an uncrewed Orion test flight, on the first flight of the SLS in 2020, to be followed by the first crewed Orion mission, EM-2, “as soon as possible thereafter.”


NASA published the presoliciation for the lunar ascent system.

The NASA Administrator appointed Sirangelo to oversee the lunar plans.

NASA started testing the Gateway station hab modules.

NASA and Boeing hope to have the first stage core for the SLS done by the end of the year.

ESA has started designing the Gateway's deepspace airlock.

Friday, November 16, 2018

ESA Delivers First Service Module for Orion Flight

The powerhouse that will help NASA’s Orion spacecraft venture beyond the Moon is stateside. The European-built service module that will propel, power and cool during Orion flight to the Moon on Exploration Mission-1 arrived from Germany at the agency’s Kennedy Space Center in Florida on Tuesday to begin final outfitting, integration and testing with the crew module and other Orion elements.

The service module is integral to human missions to the Moon and Mars. After Orion launches on top of the agency’s Space Launch System rocket, the service module will be responsible for in-space maneuvering throughout the mission, including course corrections. The service module will also provide the powerful burns to insert Orion into lunar orbit and again to get out of lunar orbit and return to Earth. It is provided by ESA (European Space Agency) and built by ESA’s prime contractor Airbus of Bremen, Germany. NASA’s prime contractor for Orion, Lockheed Martin, built the crew module and other elements of the spacecraft.

Sunday, December 10, 2017

Europe Wants its own X-37B, called the Space Rider

Space Rider is a re-entry vehicle, the evolution of the IXV (Intermediate Experimental Vehicle, launched by Vega in February 2015), capable of ‘navigating’ up to 2 months in low Earth orbit before returning to earth. Re-entry enables the recovery of all the useful load that can be analysed, and the vehicle to be reused for a new mission. The contract signed by ESA with Avio and TAS-I (Thales Alenia Space Italia) is worth a total of €36.7 million for the development of the Space Rider system, consisting of two modules: AOM (Avum Orbital Module) and RM (Re-entry Module). Avio will handle the development of AOM, a specific version of AVUM (fourth stage of the VEGA C) capable of supplying power and services for controlling the vehicle’s re-entry attitude during the orbital stage.

Friday, December 30, 2016

Examining the Recent Volcanic Activity on Venus' Idunn Mons by Venus Express


Authors:

D'Inecco et al

Abstract:

From 2006 until 2014 the ESA Venus Express probe observed the atmosphere and surface of the Earth's twin planet. The Visible and Infrared Thermal Imaging Spectrometer (VIRTIS) has provided data that indicate the occurrence of recent volcanic activity on Venus. We selected the eastern flank of Idunn Mons - Imdr Regio's single large volcano – as the study area, since it was identified in VIRTIS data as one of the regions with relatively high values of thermal emissivity at 1 μm wavelength. Using the capabilities of specific techniques developed in the Planetary Emissivity Laboratory group at DLR in Berlin, our study intends to identify location and extent of the sources of such anomalies, thus the lava flows responsible for the relatively high emissivity observed by VIRTIS over the eastern flank of Idunn Mons. We map the lava flow units on the top and eastern flank of Idunn Mons, varying the values of simulated 1 μm emissivity assigned to the mapped units. For each configuration we calculate the total RMS error in comparison with the VIRTIS observations. In the best-fit configuration, the flank lava flows are characterized by high values of 1 μm simulated emissivity. Hence, the lava flow units on the eastern flank on Idunn Mons are likely responsible for the relatively high 1 μm emissivity anomalies observed by VIRTIS. This result is supported by the reconstructed post-eruption stratigraphy, displaying the relative dating of the mapped lava flows, that is independent of the 1 μm emissivity modeling. Values of average microwave emissivity extracted from the lava flow units range around the global mean, which is consistent with dry basalts.

Friday, October 21, 2016

ESA's Exomars Schiaparelli Lander Lost

Essential data from the ExoMars Schiaparelli lander sent to its mothership Trace Gas Orbiter during the module’s descent to the Red Planet’s surface yesterday has been downlinked to Earth and is currently being analysed by experts.

Early indications from both the radio signals captured by the Giant Metrewave Radio Telescope (GMRT), an experimental telescope array located near Pune, India, and from orbit by ESA’s Mars Express, suggested the module had successfully completed most steps of its 6-minute descent through the martian atmosphere. This included the deceleration through the atmosphere, and the parachute and heat shield deployment, for example.

But the signals recorded by both Pune and Mars Express stopped shortly before the module was expected to touchdown on the surface. Discrepancies between the two data sets are being analysed by experts at ESA’s space operations centre in Darmstadt, Germany.

The detailed telemetry recorded by the Trace Gas Orbiter was needed to better understand the situation. At the same time as Schiaparelli’s descent, the orbiter was performing a crucial ‘Mars Orbit Insertion’ manoeuvre – which it completed successfully. These important data were recorded from Schiaparelli and beamed back to Earth in the early hours of Thursday morning.

link.

In fact, ESA stated the lander may have exploded.

NASA appears to have found what may be the wreckage.

Wednesday, June 22, 2016

European Built Service Module for NASA's Orion Capsule is Delayed 3 Months

The European-built service module for NASA’s Orion crew-transport vehicle will be three months late in being shipped to the United States following modifications to the design recommended by a June 16 program review, a senior European Space Agency official said June 17.

The new shipment date has been tentatively set for late April, rather than late January. ESA, NASA and the two main industrial teams – Airbus Defence and Space for the service module and Lockheed Martin Space Systems, which is prime contractor for Orion — met June 16 at ESA’s Estec facility in Noordwijk, Netherlands, to conclude a service module critical design review.

Nico Dettman, head of ESA’s space transportation department, said the delay is partly a result of the fact that several components could not yet be assessed in the full critical design review and need more time to be integrated into the design.

Tuesday, May 24, 2016

ESA Begins Building Service Module for NASA Orion Capsule

NASA and European Space Agency officials on May 19 said the European Service Module (ESM) for NASA’s Orion crew-transport vehicle was within budget and on schedule for a late-2018 inaugural flight pending a key review.

But the ESM program remains pressed for time – so much so that flight-model hardware integration is beginning before the program’s critical design review, scheduled for June 16 at ESA’s Estec facility in Noordwijk, Netherlands.

Fully loaded and fueled, the ESM will weigh about 13,000 kilograms at launch and provide Orion’s propulsion, power supply, thermal control and crew life-support elements.

It is the first time that NASA has allowed Europe to occupy such a crucial place in an astronaut-related program and signals the mutual respect between agencies that may be one of the enduring contributions of the international space station.


link

and more.

Tuesday, May 10, 2016

Funding for Delayed ExoMars Mission Uncertain

European Space Agency Director-General Johann-Dietrich Woerner on May 9 expressed frustration with the equipment delays that forced a two-year slip in the launch of Europe’s ExoMars rover vehicle and said he would not write a blank check to keep the mission alive.

Addressing a briefing here, where he was attending ESA’s Living Planet Earth observation symposium, Woerner said he still did not fully understood why the project could not make its 2018 launch date. He wondered whether it is possible to have those responsible for the delay finance part of its cost.

“I was not only surprised, I was frustrated with this delay, which was for technical reasons on both the European and Russian sides,” Woerner said, adding that at first he did not accept it.

“I was fighting like hell” to keep the mission on schedule despite indications that multiple pieces of equipment would not make it in time for the launch, he said. “I’m very upset about it and I don’t understand it from a certain point of view.”


Tuesday, May 03, 2016

ESA Postpones Exomars Rover to 2020

The European and Russian space agencies on May 2 said their joint ExoMars 2018 mission carrying a rover and an experiment-filled landing platform to Mars would not be ready in time and would be delayed to July 2020.

The delay, which ESA and Roscosmos officials had warned of since March, will add undetermined new costs to the program. ESA is expected to present to its governments a revised ExoMars scenario in June, including the financial impact of the delay, with governments likely to make a final decision during a December meeting of ESA government space ministers.


Tuesday, March 15, 2016

ESA's Director General Asked China to Give up its Separate Space Station to Join the ISS

During the International Astronautical Congress (IAC) last October in Jerusalem, there has been a little-noticed comment attributed to ESA Director General Johann-Dietrich Wörner as saying he wants China to give up its own space station in favor of joining the ISS. “I told China, we don’t need two space stations. How about ISS with China participation? Not sure how they’ll react.”

Prof. Wörner’s idea is indeed in the interests of humankind and is based in good intention. Undoubtedly a single station built by all spacefaring countries perfectly represents peace, harmony, and unification of the world and reflects on a long-held dream of humanity. However, there is a large gap between reality and that ideal.

Monday, March 14, 2016

Euro-Russian Exomars Launched on Proton Rocket

A joint European-Russian mission aiming to search for traces of life on Mars blasted off on Monday for the start of a seven-month unmanned space journey to the Red Planet.

A Proton rocket carrying the Trace Gas Orbiter to examine Mars's atmosphere and a descent module that will conduct a test landing on its surface launched into an overcast sky at the Russian-operated Baikonur cosmodrome in the Kazakh steppe at 0931 GMT.

The spacecraft is set to detach from its Briz-M rocket booster just after 2000 GMT before beginning its 496-million-kilometre (308-million-mile) voyage through the cosmos.

The ExoMars 2016 mission, a collaboration between the European Space Agency (ESA) and its Russian equivalent Roscosmos, is the first part of a two-phase exploration aiming to answer questions about the existence of life on Earth's neighbour.

The Trace Gas Orbiter will examine methane around Mars while a lander dubbed Schiaparelli that will detach and descend to the surface of the fourth planet from the Sun.

link.

More info here.

Still more info here.

Finally, one more.

Friday, January 08, 2016

Will ESA or Won't ESA? Should we be Skeptical of ESA's ANnounced Lunar Plans by 2030

The European Space Agency on Jan. 7 issued a video describing, over eight minutes, the multiple arguments for lunar exploration and saying flatly: “Our next destination on this [space exploration] journey is the Moon.”

But for now, Europe’s lunar exploration plan remains decidedly one of “all hat, no cattle,” as ESA’s national governments remain silent in the face of the enthusiastic backing of ESA Director-General Johann-Dietrich Woerner of an international lunar exploration effort.

It’s not the first time Woerner has sought to stir interest in a lunar mission. Before arriving at ESA last July, he was executive chairman of the German Aerospace Center, DLR.

DLR in 2007 had tentatively approved what began as a German-only lunar mission focusing on robotic lunar resource exploitation. At some 500 million euros ($600 million then), it proved to large a commitment for DLR alone.
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Thursday, January 07, 2016

The Design and Realisation of ESA's Intermediate eXperimental Vehicle (IXV) Mission

The Design and Realisation of the IXV Mission Analysis and Flight Mechanics

Authors:

Rodigro et al

Abstract:

The Intermediate eXperimental Vehicle (IXV) is a suborbital re-entry demonstrator successfully launched in February 2015 focusing on the in-flight demonstration of a lifting body system with active aerodynamic control surfaces. This paper presents an overview of the Mission Analysis and Flight Mechanics of the IXV vehicle, which comprises computation of the End-to-End (launch to splashdown) design trajectories, characterisation of the Entry Corridor, assessment of the Mission Performances through Monte Carlo campaigns, contribution to the aerodynamic database, analysis of the Visibility and link budget from Ground Stations and GPS, support to safety analyses (off nominal footprints), specification of the Centre of Gravity box, selection of the Angle of Attack trim line to be flown and characterisation of the Flying Qualities performances. An initial analysis and comparison with the raw flight data obtained during the flight will be discussed and first lessons learned derived.

Wednesday, January 06, 2016

ESA Wants to Give Half Billion Euro Contribution to NASA Europa Mission

As NASA quietly works on a lander that could accompany a $2 billion flyby probe to Jupiter’s icy moon Europa, the head of the European Space Agency’s science program tells Spaceflight Now that Europe is ready to play a significant role in the project.

The goals of the ESA contribution would be decided by European scientists, but the agency has the funding for a piggyback probe costing up to 500 million euros, or nearly $550 million, according to Alvaro Gimenez, ESA’s director of science and robotic exploration.

NASA asked the European Space Agency last year whether it was interested in contributing to the Europa mission, and Gimenez said in an interview with Spaceflight Now that the answer is yes.

“We will participate with no cost to NASA by us contributing something equivalent to a half-billion euros in cost to ESA,” Gimenez said. “Now, where it goes depends on the cooperation.

“This is a NASA mission, and we are happy to be a junior partner with NASA,” Gimenez told Spaceflight Now in December. “It’s our natural partnership with the U.S., and we will be very happy to do it. Now, they have to tell us the profile of the mission, what they want to do, and where do we have a role. But certainly we would appreciate the opportunity.”

ESA Planning Lunar Exploration Campaign Starting in 2020



For a while, the European Space Agency has been talking about the possibility of creating a base on the moon, using 3D printing for a large part of its construction. So far it’s been a lot of speculation, but this month the ESA reaffirmed that they are very serious about the plan – they intend to have a lunar base by the 2030s. At a recent symposium entitled “Moon 2020-2030: A New Era of Coordinated and Robotic Exploration,” the agency laid out plans for a series of missions, starting in the early 2020s, that will hopefully culminate in a human-occupied moon base.

Saturday, January 02, 2016

ESA Tests 5 kilowatt Ion Drive

European Space Propulsion (ESP), a subsidiary of Aerojet Rocketdyne Holdings, Inc. (NYSE: AJRD), successfully completed testing of a five-kilowatt Hall Thruster with a Power Processing Unit (PPU) supplied by Thales Alenia Space (TAS) Belgium. The test programme was successfully conducted in the UK, and marks the first time a flight-proven five-kilowatt class Hall Thruster has been tested with a European-manufactured PPU. The achievement of this test being completed in less time than allocated was a reflection on the robustness of the design and the understanding and expertise of the team.

ESP, a UK-registered company located in Belfast focused on providing in-space chemical and electric propulsion products for the European space market, was awarded a contract valued at approximately €11 million from the European Space Agency (ESA) in March 2015 for the flight qualification of the five-kilowatt XR-5E Hall Thruster, under the ESA Advanced Research in Telecommunications Systems (ARTES) initiative, with targeted application on telecommunication satellites.

ESP is in the process of transferring production capability of the industry-leading XR-5 thruster, the only flight-proven five-kilowatt Hall Effect Thruster, from parent company Aerojet Rocketdyne. ESP will develop the XR-5E, building upon the proven satellite integration experience and extensive flight heritage of the XR 5 product line. The programme includes establishment of a lower-cost electric propulsion design, manufacturing and testing capability that takes advantage of the strong Northern Ireland engineering and business environment. ESP is also developing a new Thermo-Throttle based Xenon Flow Controller (XFC) that will be combined with the Belfast-built thruster to provide a strong offering into the expanding European market. The completion of the PPU coupling test with the XR-5 is the first major milestone to be completed under the ARTES programme.

Tuesday, December 29, 2015

ExoMars Successfully Shipped to Baikonur

Europe's second mission to Mars has begun its journey from its birthplace in Cannes to its planned arrival at Mars on October 19. Since December 17 we've been able to watch every step of its journey, thanks to a stream of tweets from Albert Haldemann. He is overseeing the spacecraft's assembly, integration, and verification, and flew back and forth from Baikonur for the three trips required to transport ExoMars and all its equipment. Tweeting from Baikonur was technical operations officer Remy van Haarlem. I've Storified their tweets here, but include a few highlights below.

Sunday, December 27, 2015

Black Fungi From Antarctica Survived in Simulated Martian Conditions for 18 Months on the ISS

Survival of Antarctic Cryptoendolithic Fungi in Simulated Martian Conditions On Board the International Space Station

Authors:

Silvano et al

Abstract:

Dehydrated Antarctic cryptoendolithic communities and colonies of the rock inhabitant black fungi Cryomyces antarcticus (CCFEE 515) and Cryomyces minteri (CCFEE 5187) were exposed as part of the Lichens and Fungi Experiment (LIFE) for 18 months in the European Space Agency's EXPOSE-E facility to simulated martian conditions aboard the International Space Station (ISS). Upon sample retrieval, survival was proved by testing colony-forming ability, and viability of cells (as integrity of cell membrane) was determined by the propidium monoazide (PMA) assay coupled with quantitative PCR tests. Although less than 10% of the samples exposed to simulated martian conditions were able to proliferate and form colonies, the PMA assay indicated that more than 60% of the cells and rock communities had remained intact after the “Mars exposure.” Furthermore, a high stability of the DNA in the cells was demonstrated. The results contribute to assessing the stability of resistant microorganisms and biosignatures on the surface of Mars, data that are valuable information for further search-for-life experiments on Mars.