Latest Space News
Mon, 20 Nov 2017 00:00:00 +0100
Twice as big as Earth, the super-Earth 55 Cancri e was thought to have lava flows on its surface. The planet is so close to its star, the same side of the planet always faces the star, such that the planet has permanent day and night sides. Based on a 2016 study using data from NASA's Spitzer Space Telescope, scientists speculated that lava would flow freely in lakes on the starlit side and become hardened on the face of perpetual darkness. The lava on the dayside would reflect radiation from th...
Sat, 18 Nov 2017 13:03:00 +0100
Today, NASA launched NOAA's next-generation polar satellite, the Joint Polar Satellite System-1, into space. Two Raytheon (NYSE: RTN) weather programs are mission-critical components of the satellite's mission: the JPSS Common Ground System and the Visible Infrared Imaging Radiometer Suite sensor. Svalbard, Norway, is home to part of a global network of receiving stations that process and distribute polar satellite data to users worldwide. Photo taken at Kongsberg Satellite Services plateau, ...
Sat, 18 Nov 2017 08:00:00 +0100
A United Launch Alliance (ULA) Delta II rocket carrying the Joint Polar Satellite System-1 (JPSS-1) for NASA and National Oceanic Atmospheric Administration (NOAA) lifted off from Space Launch Complex-2 on Nov. 18 at 1:47 a.m. PST. The JPSS program provides the nation's next generation polar-orbiting operational environmental satellite system, delivering key observations for the nation's essential projects and services, including forecasting weather in advance and assessing environmental hazards...
Fri, 17 Nov 2017 00:00:00 +0100
Landing on Mars is difficult and not always successful. Well-designed advance testing helps. An ambitious NASA Mars rover mission set to launch in 2020 will rely on a special parachute to slow the spacecraft down as it enters the Martian atmosphere at over 12,000 mph (5.4 kilometers per second). Preparations for this mission have provided, for the first time, dramatic video of the parachute opening at supersonic speed. The Mars 2020 mission will seek signs of ancient Martian life by investiga...
Thu, 16 Nov 2017 15:07:00 +0100
The U.S. Navy's Communications Satellite Program Office, PMW 146, and Lockheed Martin (NYSE: LMT) handed over full operational control of the fifth Mobile User Objective System (MUOS) satellite to the Naval Satellite Operations Center (NAVSOC). The October 11 milestone followed the successful completion of the MUOS-5 satellite's on-orbit testing and delivery of all operational products needed to "fly" the satellite. In April, the Navy, working with Army Forces Strategic Command (ARSTRAT), con...
Thu, 16 Nov 2017 14:04:00 +0100
As part of ESA's strategy to foster commercial competitiveness in Europe while focusing on its core aims, the agency has transferred ownership of several ground tracking stations for reuse by external organisations. By the end of 2017, ESA will have transferred three stations to national organisations in Spain and Portugal, who will take over the provision of satellite tracking services to a wide variety of commercial customers. The three stations involved in the transfer are all equipped ...
Wed, 15 Nov 2017 19:33:00 +0100
Boeing [NYSE:BA] won large commitments across its twin- and single-aisle commercial airplane families, debuted key capabilities including the CST-100 Starliner docking and KC-46 refueling simulators, and announced services agreements at the 2017 Dubai Airshow. "This has been a very successful show for Boeing. Our regional customers have maintained their trust in our products and technology, and our partnerships in the Middle East region continue to grow," said Bernard Dunn, President, Boeing ...
Wed, 15 Nov 2017 12:00:00 +0100
A temperate Earth-sized planet has been discovered only 11 light-years from the Solar System by a team using ESO's unique planet-hunting HARPS instrument. The new world has the designation Ross 128 b and is now the second-closest temperate planet to be detected after Proxima b. It is also the closest planet to be discovered orbiting an inactive red dwarf star, which may increase the likelihood that this planet could potentially sustain life. Ross 128 b will be a prime target for ESO's Extremely ...
Wed, 15 Nov 2017 11:29:00 +0100
Thales Alenia Space, a joint venture between Thales (67%) and Leonardo (33%), has been chosen by the Italian space agency ASI to develop an instrument called RIME (Radar sounder for Icy Moons Exploration) for the JUICE (JUpiter Icy moons Explorer) mission, part of the European Space Agency's "2015-25 Cosmic Vision" program. Scheduled for launch in 2022 with an expected arrival in 2029, the JUICE mission is designed to study the Jovian system and more specifically its icy moons, Ganymede, Call...
Wed, 15 Nov 2017 00:00:00 +0100
The Ariane 5 for Arianespace's December 12 year-ending flight for 2017 has completed its initial build-up at the Spaceport in French Guiana - where preparations also are moving ahead with four satellite passengers that will further expand Europe's Galileo global navigation system once in their final orbit. During activity in the Spaceport's Launcher Integration Building, this heavy-lift vehicle for Arianespace Flight VA240 underwent the assembly process that began by mating its two solid prop...
Tue, 14 Nov 2017 19:47:00 +0100
The Defense Advanced Research Projects Agency (DARPA) has awarded BAE Systems a contract worth up to $12.8 million to develop an innovative space evaluation and analysis testbed to support the development, integration, evaluation and analysis of advanced space enterprise command and control (C2) tools and capability technologies. The U.S. military must be able to quickly establish situational awareness and execute operations in space. Within the space domain, many thousands of objects that ar...
Tue, 14 Nov 2017 13:45:00 +0100
Orbital ATK (NYSE: OA), a global leader in aerospace and defense technologies, today announced that the "S.S. Gene Cernan" CygnusTM spacecraft successfully completed its rendezvous and berthing maneuvers with the International Space Station earlier this morning. This marks the company's eighth successful berthing with the orbiting laboratory. Cygnus launched into orbit aboard an Orbital ATK Antares(tm) rocket at NASA's Wallops Flight Facility on November 12. The spacecraft then executed a ser...
Mon, 13 Nov 2017 17:45:00 +0100
Thales Alenia Space has signed a contract with ArianeGroup, prime contractor and design authority of Ariane 6, to design, develop, qualify and manufacture the telemetry transmitter of the new European launcher. The telemetry transmitter is responsible for transmitting to the ground the data generated by the launcher throughout the whole launch mission. It is the first contract of the company in Spain in the launchers segment. After three decades of activity in the space sector participating i...
Mon, 13 Nov 2017 17:00:00 +0100
What seemed at first like a rare instance of a huge, ancient galaxy revealed itself to be an even rarer pair of extremely massive galaxies, seen on the brink of merging when the Universe was only a billion years old. This outstanding source was first identified by ESA's Herschel space observatory, and later exposed in greater detail with the ground-based Atacama Large Millimeter/submillimeter Array (ALMA) in Chile. The earliest galaxies in the 13.8 billion-year history of our cosmos starte...
Mon, 13 Nov 2017 16:00:00 +0100
Gas giant Jupiter, organic molecules in star-forming clouds and baby galaxies in the distant Universe are among the first targets for which data will be immediately available from the James Webb Space Telescope once it begins casting its powerful gaze on the Universe in 2019. Thirteen "early release" programmes were chosen from more than 100 proposals after a competitive peer-review selection process within the astronomical community. The programmes have been allocated nearly 500 hours of obs...
Mon, 13 Nov 2017 00:00:00 +0100
After a successful year-long test campaign by Airbus at IABG in Ottobrunn near Munich, the twin GRACE-FO (Gravity Recovery and Climate Experiment Follow-On) satellites will soon travel to their launch site in California. During testing, the gravity-measuring satellites, which will track the continuous movement of liquid water, ice and the solid Earth due to Earth's changing seasons, weather and climate processes, earthquakes and even human activities, were subjected to conditions similar to t...
Sun, 12 Nov 2017 16:15:00 +0100
Orbital ATK (NYSE:OA), a global leader in aerospace and defense technologies, successfully launched its Antares(tm) rocket carrying a Cygnus(tm) spacecraft today at 7:19 a.m. EST, from NASA's Wallops Flight Facility in Wallops Island, Virginia. The launch is Orbital ATK's eighth cargo delivery mission to the International Space Station for NASA. During the mission, designated OA-8, Cygnus will deliver vital equipment, supplies and experiments to the astronauts aboard the space station, as well a...
Fri, 10 Nov 2017 00:00:00 +0100
A contract for two new generation communications satellites was signed today by Turksat with Airbus Defence and Space. The satellites, Turksat 5A and Turksat 5B, are based on the latest Electric Orbit Raising (EOR) version of Airbus' highly reliable Eurostar E3000 platform, which uses electric propulsion for in-orbit raising and station-keeping. "We are very pleased to welcome Turksat as a new Eurostar customer for the most powerful satellites of their fleet. We were the first to demonstra...
Thu, 9 Nov 2017 14:04:00 +0100
NASA's Orion spacecraft aims to send humans further into space than ever before, and ESA's European Service Module will provide the essentials for keeping the astronauts alive and on course. A review of the programme by NASA to assess progress is now showing a launch date from December 2019 to June 2020. The first Exploration Mission-1 will circle the Moon without astronauts to lay the foundation and prove the technology for a second mission with a crew. In Bremen, Germany, integration ...
Thu, 9 Nov 2017 11:42:00 +0100
A UK company has been selected to undertake the Assembly, Integration and Test (AIT) for a satellite which will help tackle climate change, Science Minister Jo Johnson announced today. Thales Alenia Space has signed a contract with the UK Space Agency to work on MicroCarb, a joint UK-French satellite mission which will measure sources and sinks of carbon, the principal greenhouse gas driving global warming. It is the first European mission intended to characterise greenhouse gas fluxes on Ear...
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  • CV: Structural/Thermal/Propulsion System Engineer

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    Personal information
     Name:<withheld>
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    Candidate Profile
     Date Submitted:02-07-2014
     Last Modified:17-04-2015 (07:24)
    Job information
     Current job:Structural/Thermal/Propulsion System Engineer
     Employment Term:Permanent
     Job location:Anywhere
     Date available:within a month
     Industry:Civil Agencies/International Organizations, Satellite Manufacturers and Subcontractors, Satellite Operators, Launch Systems, Business Services, Consulting/Engineering Services
     KeywordsDoctor/Engineer Aerospace/Mechanical with almost 10 years experience in Space/Satellite industry specifically in Program/Project Management, System Engineering, Structural/Thermal design, analysis and env. Testing, Space propulsion etc
    CV

    General Manager at SUPARCO1

    Mechanical Engineer/Aerospace Engineer/Doctorate in Material Sc. & Engg.

    Date of Birth: 25-01-1978;

     

    Skills/Areas of interest:       

    Technical Project/Program Management, Structural/Mechanical design, analysis and testing, Thermal/Thermo-Mechanical design, analysis and testing, Mechanical Integration Research and Development in a relevant area etc.

    Education: 

    PhD (January 2005-July 2008):Material Science and Engineering, “Ecole de Mines Paris-MINES ParisTech, France” ‘An investigation on Thermomechanical Fatigue Behaviour of a Tool Steel X38CrMoV5/AISI H11’; defended with honors.

    Master of Science (September 2003-January 2005): Aeronautical Engineering, “Ecole Nationale Supérieur de l’Aéronautique et de l’Espace, ISAE/SUPAERO, Toulouse, France” (Mention – Very Good: A-Grade)

     Bachelors of Engineering(1995-1999):Mechanical Engineering, “NED University of Engineering and Technology, Karachi,  Pakistan” (A-Grade: First Division)

    Work Experience:

      August 2008 to date:1- Pakistan Space and Upper Atmosphere Research Commission (SUPARCO)

    General Manager (April 2013 to date): Currently heading Leo satellite structure/thermal/mechanism division which includes 8 graduate engineers, one PhD and 20 technicians.

    o    I have been involved in the mission planning, system engineering and program/project management of a Low earth orbit remote sensing satellite PakTES.

    o    Managing a team of engineers to conduct preliminary design review (PDR) of structure/thermal/mechanism and propulsion subsystems of the proposed 800 kg PakTES at system/subsystem and unit level including all technical documentation/reports following European Corporation for Space Standardization (ECSS).

    o    Carried out all the resourcing and procurements for the development of Structural/Thermal/Propulsion qualification model, whose structure is composed of honey comb sandwich material with embedded and surface heat pipes and other passive thermal control components with hydrazine based propulsion system.

    o    Heading a team of aeronautical/mechanical engineers to design, develop and install air born small aperture radar antenna (SAR) and housings for its support electronics on a small aircraft.

    o    Detailed planning of structural and thermal environmental testing at system, subsystem and unit level has also been carried out.

     

    Technical Manager (August 2008 to March 2013): Well rounded satellite mechanical engineering experience in Structural Design and Analysis, Thermal Design and Analysis, Mechanical Packaging and Integration and Testing.
     

    Structural Design and Analysis: Lead structural engineer of PakTES and customer furnished electronics units of PakSAT-1R.

    o    Designed structural configuration as per the mission requirement including the design (based on rib stiffening system to achieve higher natural frequency) of several housings/boxes for electronic subsystems such as power, AOCS, OBC/OBDH and payload modules etc.

    o    Performed detailed housing/box-level structural analysis including normal modes, static, and frequency response analyses.  Further, design optimization was carried out in order to achieve the required margin of safety by reducing the number of fasteners and the thickness of sandwich panel etc.

    o    I have also been a team member, which was responsible for the mechanical design, analysis, manufacturing and testing of the housings/boxes of several customer furnished electronic units which are installed in PakSAT-1R and functioning successfully in-orbit.

    Thermal Design and Analysis: Lead thermal engineer of PakTES and customer furnished electronics units of PakSAT-1R.

    o    Performed all thermal design and analysis at all stages of satellite design. Built all thermal models (main Space Vehicle model, all box-level, and all board-level models), evaluated environmental considerations, selected all emissive coatings, and provided feedback into mechanical and structural designs.

    o    Worked with payload to integrate their thermal model into satellite thermal model.

    o    Researched heat pipe design and optimized baseplate thermal coverage and heat sinking capabilities, and worked with vendor for quotes and cost-effective design.

    o    Designed small thermal and support brackets for electronics boards

    o    Participated in all thermal vacuum and thermal cyclic tastings of customer furnished instruments for PakSAT-1R.

    Mechanical Design and Development: Participated thoroughly from conception to execution in the following projects.

    o    Design and fabrication of a solar panel deployment mechanism based on torsion and tape spring for the engineering qualified model of a remote sensing satellite.

    o    Design and fabrication of a zero-G simulator for solar panel deployment mechanism.

    o    Design, fabrication and testing of cold gas thrusters and storage tank.

    o    Design and fabrication of GSE for several environmental testing of customer furnished instruments for PakSAT-1R.

    o    Good experience in creating mechanical drawings for several types of parts. Performed mechanical design and packaging of several boxes and enclosures. Created enclosures that required tight EMI seals.


    January 2005 to July 2008: Institut Clement Ader (ICA-Albi), Ecole de Mines d`Albi, France

     

    Researcher : In order to prepare a PhD dissertation in the area of Material Sciences and Engineering.

    o    The aim of this work was to predict the cyclic behaviour of AISI H11 tool steel with a nominal Rockwell Hardness of 47. Various isothermal and non isothermal conditions have been investigated with different strain rates, strain amplitudes and temperature levels, by applying two different approaches. A constitutive thermo-elastoviscoplastic model was considered which includes kinematic and isotropic components to define strain rate effects, dynamic recovery and cyclic softening.

    o    To progress conditions, two types of loading conditions (variable temperature and variable strain amplitude) had been designed. A test bench had been developed to conduct these experiments and a complete time-temperature-strain history is presented further in terms of applications of these models and to observe the behaviour of the material under complex loading.

    o    In accordance with the experimental data base, these behaviour models had been characterized and analyses of their pertinence and limitations had been carried out in order to upgrade them to satisfy different working conditions.

    o    Finally, numerical simulation on a structural thermomechanical fatigue test specimen had been performed by using these constitutive laws to analyse their applicability under severe loading conditions.

    o    Submitted and defended the PhD dissertation with honors in Albi, France, in front of an international jury composed of a professor from Karlstad University Sweden, a professor from Ecole Polytecnico di Turino Italy, along with other professors from France.


     July 2000 to June 2003: Pakistan Space and Upper Atmosphere Research Commission (SUPARCO)

    Assistant Manager (Technical):Satellite Research and Development Centre, SUPARCO, Pakistan. Headed one engineer and 18 technicians/workers of a mechanical workshop.

    o    Participated in the design and fabrication of prototype satellite structure based on honey comb sandwich panels. One-shot fabrication technique was used and sine sweep testing was performed to validate the fabrication criteria.

    o    Conducted compressive strength testing of honey comb sandwich panels to determine in plane and out of plane compressive strength. These tests were performed on aluminium and glass fibre panel facings in order to compare their mechanical properties.

    o    Trouble shooting and maintenance of a space simulator/humidity chamber.

    o    Development of a mechanical work shop, procurement of different machines e.g. lath, milling, shearing and drilling etc.


    August 1999 to June 2000: Plastipack Machines Pvt. Ltd., Karachi, Pakistan

    Services Engineer: This work included maintenance, after sale services and marketing of plastic processing and packaging machines.

    o    Participated in a team project of designing and fabrication of 1 ton ammonia based ice plant.

     

    Computer Skills:

     

    Operating Systems

    Office Tools

    CAD/Mechanical design tools

    Structure and Thermal Analysis Tools

    Programming Languages

    Windows

    MS Word

    IDEAS

    MSC Nastran/Patran

    Fortran

    Unix

    MS Excel

    Pro/E Wild Fire

    ABAQUS

    Matlab

    Linux

    MS Power Point

    AutoCAD

    ANSYS Workbench

     

    Apple Mac.

    MS Project

     

    Sidolo 2.4

     

     

     

    Selected Publications:

     

    ·         Z.Ahmer, V. Velay, F. Rezai-Aria, G. Bernhart, Cyclic behaviour simulation of X38CrMoV5-47HRC (AISI H11) tempered martensitic hot work tool steel, 7th International tooling conference.

    ·         Z.Ahmer, V. Velay, F. Rezai-Aria, G. Bernhart, An updated version of the paper, Cyclic behaviour simulation of X38CrMoV5-47HRC (AISI H11) tempered martensitic hot work tool steel, International journal of microstructure and material properties, issue 2008, vol 3.

    ·          Y. Ayub, Z.Ahmer, S. Riffat, M.A.Shah, Mechanical behaviour characterization of aluminum based honey comb structure by optimized modeling and numerical simulations, Journal of space technology, issue June 2011.

    ·         Z. Ahmer, V. Velay, F. Rezai-Aria, A study of mechanical behaviour of AISI-H11(X38CrMoV5-47HRC) under complex isothermal(LCF) and complex non-isothermal(TMF) loading conditions, submitted in the journal of Material science and engineering (A) 2014.

    ·         Z.Ahmer, A. Shah, Design optimization through numerical simulation and testing of a 5N cold gas thrusters.’ Journal of space technology issue 2014.

     

    Awards/Accomplishments and Complementary Information:

     

    ·         Attained scholarship to carry out Master of Science studies in ISAE/SUPAERO from Société française d’exportation des ressources éducatives (SFERE).

    ·         Attained scholarship from Ecole de Minesd’ Albi to carry out PhD studies.

    ·         Linguistic Skills:  Bilingual; English and French (Fluent)

    ·         Sports: Captain of SUPARCO Pakistan cricket team; squash, swimming, snooker and a regular GYM member.

    ·         References: Available upon request.


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