Daniel Hanus

Proposal for a EU quality label for aerospace education

The paper presents a possible roadmap for the definition of a European quality label for aerospace related higher education degrees. The proposal is the result of a two-years long Horizon 2020 project that has involved a great portion of the European stakeholders in aerospace: Universities, research centres, industries (both small and large) networks, associations and accreditation agencies. The core concept established is that it is possible to establish a sector-specific, content based, quality system, that can complement the existing national or European accreditation systems, providing added value to the internal and/or external quality assurance processes that are in place in most EU countries. The tools and processes proposed are sufficiently simple to be manageable by Universities in addition to their national accreditation processes or as stand-alone assessment. The main goal of the proposed process is the evaluation of the quality of the aerospace curricula in the European context, whereas the accreditation of the programme can be seen as an optional extension of the process, subject to further national regulations. The process is proposed in view of the awarding of a sector-specific, content based, quality label, to be issued by an appropriate legally recognized and qualified institution. 8 field tests with volunteering universities throughout Europe have been performed. They experienced the method as very practical and to the point.

Effective Radiative Forcing – a New Approach to Assessing the Impact of Aviation on the Atmosphere

This article discusses new possibilities of assessing the impact of aviation on the atmosphere. The second part of this text describes a project realized at the Department of Air Transport at the Czech Technical University in Prague. The project is focused on investigating the effect of air transport on contrails.

Design of Carbon Composite Driveshaft for Ultralight Aircraft Propulsion System

This paper deals with the design of the carbon fibre composite driveshaft. This driveshaft will be used for connection between piston engine and propulsor of the type of axial-flow fan. Three different versions of driveshaft were designed and produced. Version 1 if completely made of Al alloy. Version 2 is of hybrid design where the central part is made of high strength carbon composite and flanges are made of Al alloy. Adhesive bond is used for connection between flanges and the central CFRP tube. Version 3 differs from the version 2 by aplication of ultrahigh-strength carbon fibre on the central part. Dimensions and design conditions are equal for all three versions to obtain simply comparable results. Calculations of driveshafts are described in the paper.

IGCC for Brown Coals With Supercritical Steam Turbine

The paper deals with the IGCC for brown coal (BC) with simultaneous improvement of the steam cycle by the usage of supercritical steam parameters. Two gasifiers with a fluidized bed are used with outlet syngas temperature about 900°C. Main part of the paper is focused on the arrangement and optimization of the IGCC with net total electrical output 454.7 MW and with supercritical inlet parameters 260 bar, 580°C/600°C of steam turbine. The energy sources for the steam part of the cycle are HRSGs downstream of two gas turbines at 122.6 MW each and two raw gas coolers downstream of two gasifiers. The thermal efficiency of this IGCC is on LHV basis about 49.0%. Utilization of brown coal (BC) energy in described IGCC is by 4.7% higher than in steam power station with the same parameters. This IGCC enables reduction of CO2 emission by around 44% compared with existing power stations with thermal efficiency 34%.Copyright

Some Unconventional Applications of Thermometers in Turbomachinery

New application possibilities of the thermometers for the purpose of the measurements of the mean velocity f low field, that is the vector of velocity and its direction in the space is described. The application is based on the directional characteristic (recovery factor) of the cylindrical shaped termocouple probe and its specific course. The influence of the angle of attack of the gas flow on the measured temperature allows with a very good accuracy to use a thermocouple probe as an element of the velocimeter probe like a pneumatic probe. So that specially adjusted thermocouples with the configuration of 3 or 5 elements form the probe that can indicate the velocity of the gas flow and its direction in the plane or space eventually. The accuracy of the results of the measurements of the mean value and direction of the velocity vector of the flow field increases with Mach numbers. The experience made during the development and measurements of performance characteristics of large axial flow compressors at the CKD Praha company proved, that it would be possible to design and develop special probes based on thermometer elements for measurements namely the surge of the compressor and also to design special indicator for detection rotating stall within the compressor that could be very probably more efficient and reliable device than classical pneumatic sensors.