Essays about: "nasa system"

Showing result 11 - 15 of 62 essays containing the words nasa system.

  1. 11. Generating Product-Service Design Improvements from a Climate Impact and Energy Use Perspective Using Life Cycle Assessment : The Case of Vertical Access Equipment

    University essay from Linköpings universitet/Industriell miljöteknik

    Author : Vishnu Teja Tirumalasetty; Max Olof Jonas Bäck; [2021]
    Keywords : Life Cycle Assessment; LCA; Product-Service System; PSS; Vertical Access Equipment; Circular Economy;

    Abstract : Climate change is connected to several negative effects on local environments around the globe such as, longer, and more intense droughts, less freshwater supplies, ocean warming, sea level rise, polar ice melting, more intense storms, and rainfall (NASA, 2021).  These problems are mainly due to the increasing amount of carbon dioxide in the atmosphere as well as other greenhouse gases (GHG) which cause a similar or stronger climate change effect (WWF, 2021). READ MORE

  3. 12. Heat and fluid control solutions for deep space CubeSat CGPS

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Filipp Byström-Troyan; [2021]
    Keywords : Cold gas propulsion; Thermal control; Computer simulation; Kallgasframdrivning; Termisk analys; Datorsimulering;

    Abstract : This thesis is on the subject of how propellant heating considerations affect the design of a CubeSat cold gas propulsion system. Computer simulation tools are used to analyse heat flow through the system, as well as the fluid flow and phase change of butane. READ MORE

  4. 13. Measuring a Platoon Commander's Performance in a Complex, Dynamic and Information Rich Environment

    University essay from Linköpings universitet/Institutionen för datavetenskap

    Author : Alexander Melbi; [2021]
    Keywords : C2; command and control; platoon commander; performance measurements; human factors; CARS; SAGAT; NASA-TLX; OODA; virtual battle space 3; first person shooter; military;

    Abstract : Command and control (C2) environments are complex, dynamic and rich in information. Thus, measuring the performance of an agent in a C2-system, in this case a platoon commander, poses a challenging task for the researcher. READ MORE

  5. 14. Machinery Health Indicator Construction using Multi-objective Genetic Algorithm Optimization of a Feed-forward Neural Network based on Distance

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Jacob Nyman; [2021]
    Keywords : Prognostics; Health Indicator Construction; Remaining Useful Life Prediction; Multi-objective Optimization; Distance; Prognostik; Hälsoindikatorkonstruktion; Återstående Livslängd; Multiobjektiv Optimering; Avstånd;

    Abstract : Assessment of machine health and prediction of future failures are critical for maintenance decisions. Many of the existing methods use unsupervised techniques to construct health indicators by measuring the disparity between the current state and either the healthy or the faulty states of the system. READ MORE

  6. 15. Onboard computer fault-tolerance detection and mitigation

    University essay from Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Author : Gustav Olofsson; [2020]
    Keywords : Onboard Computer; Exceptions; Error Handling; RTOS;

    Abstract : The aim for this thesis is to design a software library responsible for preventing, detecting, handling and logging faults caused by radiation in a representable flight computer system based on the Cobham Gaisler GR740 quad-core LEON4FT processor chip. The LEON processor family is commonly used in space applications and it is based on the open SPARC instruction set and has been extended with fault tolerant features to cope with both on-chip radiation effects as well as upsets in external memory. READ MORE