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eROSITA (extended ROentgen Survey with an Imaging Telescope Array) is a powerful X-ray telescope under development by the Max-Planck-Institut für extraterrestrische Physik (MPE) in Garching, Germany. eROSITA is the core instrument on the Russian SRG1 mission which is planned for launch in 2011. It comprises seven nested Wolter-I grazing incidence telescopes, each equipped with its own CCD camera. The mirror modules have to be maintained at 20°C while the cameras are operated at -80°C. Both, mirrors and CCDs have to be kept within tight limits. The CCD cooling system consists of passive thermal control components only: two radiators, variable conductance heat pipes (VCHP) and two special thermal storage units. The orbit scenario imposes severe challenges on the thermal control system and also on the attitude control system.

Advancing the conversation around mobility knowledge with news and trends to benefit humanity.

Most emerging electric vertical takeoff and landing (eVTOL) aircraft feature distributed electric propulsion systems with automation features that simplify operations for future pilots. In theory, increasing automation levels should reduce pilot workload, decrease training time, and improve performance consistency. Air Education and Training Command Detachment 62 (AETC/Det 62) sought to test this theory as part of a larger study involving 70+ participants, two eVTOL platform simulators, and multimodal assessments of flight performance. In the present report, we compared expert ratings of flight performance of pilots who do not have prior pilot experience or training (herein referred to as ab initio pilots; i.e., 0 flight hours) to those of experienced pilots (i.e., >300 flight hours) in either a semi-automated or highly-automated simulated eVTOL platform.

eVTOL engineering takes flight

easyJet has set new targets for 2020 that will contribute to a reduction of 7% over the next five years compared to ‎it‎s emissions today.

THIS PAPER presents a review of the design and operational problems of heavy-duty truck brakes. One of the major development goals is brakes that require no attention between relinings (as are now available on passenger cars). The author discusses point by point the AMA-TTMA Brake Committee agreement relating to extended brake service life and periods between brake adjustments. Emphasis is placed upon maintenance programs which provide for frequent inspection of the vehicle. The margin of brake performance deterioration is narrow.*

The purpose of this ARP is to provide criteria that will lead to and support existing regulatory standards of systems for UAM/AMM/eVTOL aircraft such that the emergency systems will facilitate egress under emergency conditions. Consideration is given to existing requirements of the FAA and to the recommendations of aircraft operators and those involved in the manufacture or use of the emergency lighting system. Occupant safety is the primary objective, with appropriate provisions for crew (pilot) system control taken into consideration. Consideration is also given to autonomous aircraft in which passengers are required to egress without the aid or direction of crew. The criteria established herein are intended to produce an emergency lighting system that will comply with the Federal and International Regulations. However, these recommendations are but one means of meeting the objective.

The euces project was initiated to be prepared for the future role of EADS as stage system prime for stage and launcher developments. Launcher stages for NGLV need to meet ambitious mission and operational demands. The paper will present a brief overview of the currently existing COMPONENT libraries and its possibilities as well as an application example which will be a simplified functional model of the ARIANE 5 EPS upper stage w.r.t. physical model formulation of its incorporated components, its schematic, data initialisation and simulation results obtained. The simulation results will be compared to flight data of a dedicated flight.

Regulators and other privacy advocates believe vehicle-related data collection and brokering is in overdrive. One expert believes the day of reckoning is coming.

This paper presents the modeling results of an innovative i-cool system for controlling the cabin temperature of a standalone car facing the solar energy from the sun. Project work indentifies the best possible phase change material (PCM) to be used for i-cool system is n-Heneicosane which shows maximum total heat flux is 44189 W/m2. From all the PCMs n-Heneicosane, n-Eicosane and n-Nonadecane that were shortlisted in selection criteria shows 600 sec to achieve inner surface temperature equal to the outer surface for a metropolitan car. While without use of PCM, the metropolitan car takes 320 sec & total maximum heat flux is 32900 W/m2. The final selection of n-Heneicosane shows 34.25% efficiency over conventional car.

The very first objective of each HMI system is to arrange its handling as intuitive and easy as possible so that the driver can concentrate on the driving, which means driving in a safe manner as well as real fun to drive. Since the arrival of microelectronics, the number of functions in the vehicle which go beyond the straightforward business of driving have been ever increasing. This enormous range of functionality and information should continue to be usable easily and intuitively by the most varied types of driver without diverting the driver's attention from the traffic and putting the safety of the driver and passengers at risk. With the new operation concept iDrive BMW has set a big milestone.

Truck and bus manufacturers have been constantly facing an issue to disassemble the rear axle shaft from the hub when transporting the truck from the factory to the dealership. In addition to that, the dealerships have the very same problem every time they have to replace the brake pads in some truck models, which leads to excessive service time, extra costs and aftermarket complaints. The current problematic fastening system is composed by a lock nut, a flat washer and a coned slotted bushing. The concept of this 30 year old design involves the coned slotted bushing being pressed against a tapered hole on the shaft’s flange. After tightening the lock nut, the bushing clamps towards the stud and it gets stuck in between the shaft and the stud generating the problem described above. This paper shows the R&D process that Tekfor used to come up with the 1-piece fastener named iLokTM nut that replaces the problematic 3-piece fastening system.

TODAY'S high-compression engines present new problems of engine noise to automotive engineers. This paper deals with some of the factors which contribute to rumble, knock, and surface ignition. The work was primarily concerned with the influence of fuel composition on the equilibrium octane number requirement and surface ignition tendency of high-compression engines. Both the effect of the combustion-chamber deposits formed by the fuel and the effect of the combustion characteristics of the fuel itself were considered. The results indicate that a reduction in gasoline tail-end volatility or the use of an effective ignition control additive can reduce knock, surface ignition, and rumble; while use of gasolines containing high concentrations of aromatic hydrocarbons can increase these combustion difficulties.

igus has developed what it claims is the world’s first tribologically enhanced plastic filament for 3D printers, which are used to print full-size, three-dimensional objects. Specifically created for motion control applications, the low-friction material is 50 times more resistant to wear and abrasion than conventional 3D printer materials, according to the German plastics company.