The enterprise FEAC Engineering P.C. based in Western Greece region, has joined the Action “Upgrading micro & small businesses to develop their skills in new markets” with a total budget of 310 million €. The Action aims at the upgrading of the competitive position of very small and small enterprises.
The investment’s total budget is 53.891,00 € out of which 21.556,00 € is public expenditure. The Action is co-financed by Greece and the European Union – European Regional Development Fund.
The approved subsidised Business Plan includes investments in the following categories:
Buildings, other facilities and surrounding area
Machinery – Equipment
Wage costs for personnel (current and /or new employees)
Through the participation in the Action, the enterprise achieved:
Increase of profitability
Reinforcing an extrovert business profile
Market expenditure by adopting new products and services
Creating better quality products and services
Increasing productivity and improvement of operational procedures
Creating / maintaining job positions
The support of EPAnEK proved beneficial, not only for the enterprise but for the competitiveness of the national as well as the local economy.
Thermal simulation to assist the design of Aerospace systems
Aerospace systems experience a typical range of temperatures from -250 °C to 300 °C. Given this extremely hot to cold commutation, and vice versa, thermal space simulations are essentials to model the thermal protection system. Firstly, the main design of the satellite determines the way and the location heat fluxes (radiation, convection) are entering and moving inside the structure. Secondly, to avoid temperature from rising above the maximum allowable operating temperature, scientific studies based on thermal mechanics of composite materials, so that the structure could withstand these boundaries conditions without structural failure. Space Shuttle Thermal Protection System (TPS) is the barrier that protects a spacecraft during the searing heat of atmospheric reentry from friction and temperatures while in orbit. Multiple approaches for the thermal protection of spacecraft are in use among them ablative heat shields, passive cooling and active cooling of spacecraft surfaces.
Figure 1: The command module of Apollo 8 with evident signs of heavy thermal loads
The meaning of a succeed mission in space is vital since both human lives and earth resources are ‘’invested’’ to discover the hidden technological opportunities far away of our planet.
Generally, the mechanisms to transfer heat are conduction, convection and radiation.
Conduction is the energy that transfers across a system boundary due to temperature difference by the intermolecular interaction. In space thermal analysis heat loads are generated by electronic systems on the PCBs, such as batteries.
Convection is the transfer of heat between the solid surface and the liquid. Concerning thermal space simulation convection heat transfer is mainly negligible and it is generated in the inside area of the satellite since the energy is traveling through the vacuum of space.
Radiation is the transfer of heat by electromagnetic waves and does not require the presence of a material medium to take place. The Direct Solar Energy from Sun and the Solar Energy Reflected from Earth are responsible for the major amount of thermal radiation heat.
The mission requirements including operational temperature limits and orbit specifications are essential for thermal analysis. Specifically, orbit type according to altitude classifications (low Earth, Medium Earth, Geosynchronous – Geostationary) and orbit date and positions determine the space radiation.
Simcenter™ 3D Space Systems Thermal software is the space industry vertical application that provides a comprehensive set of tools to conduct orbital thermal analyses within the Simcenter 3D environment. It is ideal for orbital vehicle applications with complex geometry-based models. The solver enables engineers to handle large thermal models with specific thermal features that must be defined to validate the thermal results against the real state problem.
Figure 3: The Orbit Visualizer windowin SImcenter 3D displays the aim, align, satellite-sun and satellite planet vectors
The benefits from using Simcenter 3D Space Systems Thermal are summarized below:
• Predict thermal performance for orbiting vehicles accurately and quickly
• Reduce costly physical prototypes by using thermal simulation to understand product performance
• Increase collaboration and team productivity with a thermal analysis solution that is easily integrated with your design and engineering process
• Leverage all the capabilities of the Simcenter 3D integrated environment to make quick design changes and provide rapid feedback on thermal performance
• Maximize process efficiency with a highly automated solution that requires no additional input files and carries out analysis in a single pass
As an engineering office, FEACENGINEERING P.C is committed in delivering multi-physics simulation services covering, amongst others, the entire space system development. By utilizing the Simcenter 3D Space Systems Thermal Solver we can solve steady-state and transient models of linear and non-linear problems with great accuracy and consequently guide the design early in the design cycle instead of just verify it.