Essays about: "Re-entry"

Showing result 1 - 5 of 24 essays containing the word Re-entry.

  1. 1. Ageing process analysis of solar panels in graveyard geostationaryorbit for reusability potential

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

    Author : Robin Drevet; [2024]
    Keywords : space debris; Spacecraft Materials; satellite; Space Sustainability; Space Circularity; Space Manufacturing;

    Abstract : The constant growth of space debris and the associated risks force the space community to find solutions to mitigate them. Today the most advanced solutions to dispose of satellites and rocket stages after the end of mission consists of moving them either into a graveyard orbit or towards an atmospheric re-entry ending in the demise of both spacecraft and its materials. READ MORE

  3. 2. Application of ring statistics to characterise graphitisation of carbon fiber heat shields under atmospheric re-entry conditions

    University essay from KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

    Author : Hamish Keay; [2023]
    Keywords : Aerospace; Heat shields; Re-entry; Graphitisation; Carbon fiber; Carbon phenolic; Ring statistics; Graph theory; Molecular Dynamics; återinträde; grafitisering; kolfiber; kolfenol; ringstatistik; grafteori; molekylär dynamik;

    Abstract : Carbon fibers submitted to high temperatures (>2000 °C) experience a permanent increasein their thermal conductivity. This change has been attributed to a change in the molecularstructure due to graphitisation. READ MORE

  4. 3. Towards Engineering Trustworthy Distributed Reputation Systems Over The Blockchain

    University essay from Malmö universitet/Fakulteten för teknik och samhälle (TS)

    Author : Georg Grankvist; Paul Moustakas; [2022]
    Keywords : Blockchain; Ethereum; Smart Contract; NFT; Bank-ID; Software Architecture; Reputation Systems; Sybil Attack; Re-entry Attack; P2P; Distributed;

    Abstract : Peer-to-peer (P2P) reputation systems, such as those used by eBay and Amazon, servean important role on the web, especially in E-commerce, as online reputation serves asa primary guiding factor for consumers in making informed decisions. The importanceof these systems, and also the increasing popularity of P2P and distributed systems, theissue of how to prevent and resist sybil and re-entry attacks becomes an important area ofresearch as they can impinge the integrity of those systems. READ MORE

  5. 4. Risk computation for atmospheric re-entry

    University essay from KTH/Rymdteknik

    Author : Florian Teilhard; [2021]
    Keywords : Spacecraft Dynamics; Atmospheric re-entry; Rymdfarkosters dynamik; Atmosfäriska återinträdet;

    Abstract : In the present work, two numerical tools are under scrutiny. Both were made to study the atmospheric re-entry of a spacecraft: DEBRISK computes the trajectory and the survivability of the spacecraft as well as its fragments, and ELECTRA calculates the trajectory of the spacecraft and its fragments, as well as the associated on-ground risk of human casualty. READ MORE

  6. 5. Vertical landing flight envelope definition

    University essay from Luleå tekniska universitet/Rymdteknik

    Author : Jack Charles Hooper; [2020]
    Keywords : trajectory optimization; pseudospectral; optimal control; re-entry; high speed aerodynamics; high angle of attack;

    Abstract : This paper will investigate the development of a landing footprint for a re-entry vehicle. Vehicles can re-enter the atmosphere with a range of orientations, velocities and flight path angles. READ MORE