Essays about: "ascent"

Showing result 11 - 15 of 34 essays containing the word ascent.

  1. 11. Conceptual Design of an Air-Launched Three-Staged Orbital Launch Vehicle

    University essay from KTH/Rymdteknik

    Author : Måns Rasmussen; [2021]
    Keywords : Air-launched; Launch Vehicle; Three-staged; Rocket; Sun-Synchronous orbit; Solid propellant; Liquid propellant; Trajectory optimization; Nonlinear programming; JAS 39 Gripen; Fighter aircraft; Luftlanserad; Trestegsraket; Solsynkron bana; Fast bränsle; Flytande bränsle; Bananalys; Icke-linjär optimering; JAS 39 Gripen; Jaktflygplan;

    Abstract : The objective of this study was to design a launch vehicle capable of deploying a nanosatellite into a Sun-synchronous orbit at 500 km orbital altitude from the JAS 39E/F Gripen fighter aircraft. This was achieved by first performing theoretical calculations for the required nozzles and solid propellant grain configurations for the first two solid stages, followed by the necessary liquid propellant configuration for the third stage. READ MORE

  3. 12. Next generation gate seating

    University essay from Lunds universitet/Innovation

    Author : Hanna Petersson; Axel Hanssen Bothin; [2020]
    Keywords : Modular seating; Airports; Gate environment; Product development; Double Diamond; Technology and Engineering;

    Abstract : This project is based on product development of Green Furniture Concept’s module based seating system, Ascent, targeted towards airport environments. The project started with an open brief aimed at developing an add-on for the bench series, based on user needs. The project lasted for 20 weeks. READ MORE

  4. 13. Den vuxna laxens migration i Vindelälvens laxtrappa

    University essay from SLU/Dept. of Wildlife, Fish and Environmental Studies

    Author : Camilla Blomdahl; Jeanette Jonsson; [2020]
    Keywords : laxtrappa; Salmo salar; uppströmsmigration; Vindelälven; laxmigration;

    Abstract : Lax, Salmo salar, har en anadrom livscykel. Den spenderar delar av sitt liv ute i saltvatten i havet innan den simmar tillbaka till sitt söta hemvatten för lek. För en del laxar blockeras de naturliga vandringsvägarna till lekplatsen av vattenkraftverk. Konstgjorda laxtrappor byggs ibland för att underlätta vandringen. READ MORE

  5. 14. Guidance and Control for Launch and Vertical Descend of Reusable Launchers using Model Predictive Control and Convex Optimisation

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

    Author : Guillermo Zaragoza Prous; [2020]
    Keywords : Model Predictive Control; RLV; Rocket; Guidance; Control; GNC; Vertical Landing; Vertical Launch; Convex Optimisation; Reusable Launcher;

    Abstract : The increasing market of small and affordable space systems requires fast and reliablelaunch capabilities to cover the current and future demand. This project aims to studyand implement guidance and control schemes for vertical ascent and descent phases ofa reusable launcher. READ MORE

  6. 15. Major and trace element geochemical analysis of norites in the Hakefjorden Complex to constrain magma source and magma plumbing systems

    University essay from Lunds universitet/Geologiska institutionen

    Author : Aodhan Barrett; [2020]
    Keywords : Anorthosite; norite; Plagioclase; Hakefjorden Complex; Sweden; Trace Elements; Geochemistry; Magma Origin; Earth and Environmental Sciences;

    Abstract : Major and trace element data taken from plagioclase crystals from anorthosites and related rock units in the Hakefjorden Complex located off the west coast of Sweden were investigated for the purposes of constraining magma chamber processes and the source of the magma. Although the anorthosite units were completely homogenous in regards to its chemistry, the plagioclase in the associated norite and ilmenite-leuconorite units showed substantial variation. READ MORE