Essays about: "upper stage design"

Showing result 1 - 5 of 10 essays containing the words upper stage design.

1. 1. Hydrogen storage systems : Methodology and model development for hydrogen storage systems performance evaluation based on a transient thermodynamic approach

   University essay from Mälardalens universitet/Akademin för ekonomi, samhälle och teknik

   Author : Kreshnik Margaritari; [2023]
   Keywords : Hydrogen; Hydrogen storage system; Hydrogen filling process; Hydrogen storage system operation; Hydrogen storage system design; Hydrogen fast filling; Hydrogen tank modelling;

   Abstract : The overall performance of a hydrogen storage system can be affected by various parameters, such as operation and design parameters, but also by the state of the hydrogen contained inside the storage tanks. In this work, a methodology is developed to evaluate the state of the hydrogen during the filling process and its impact on the overall system performance under variable operation conditions and design parameters. READ MORE

3. 2. Preliminary Design of a 30 kN Methane-Oxygen-powered Electric-Pump-fed Liquid Rocket Propulsion System

   University essay from Luleå tekniska universitet/Rymdteknik

   Author : Vikramjeet Das; [2023]
   Keywords : rocket engine; liquid rocket; methalox; electropump; LRPS; LPRE; liquid methane; electric pump feed system;

   Abstract : The design of a liquid rocket propulsion system, unlike that of a standalone system, is intertwined with the overall development of a number of associated systems and is influenced by a multitude of conditions and considerations: from the requirements needed to accomplish the mission to the rationalizations involved behind the development of each rocket system and/or component. In my thesis, the preliminary design of a “new generation” 30 kN rocket engine driven by an electric pump feed system and running on liquid methane and liquid oxygen is performed. READ MORE

4. 3. EVALUATION OF MULTI-ZONE MODELLING FOR FIRE RISK ASSESSMENT IN TUNNELS

   University essay from Lunds universitet/Avdelningen för Brandteknik

   Author : Annachiara Nardone; [2023]
   Keywords : tunnels; tunnel fires; multi-zone modelling; Technology and Engineering;

   Abstract : Abstract Tunnels are one of the most complex and delicate elements of the road system. Assessing fire behaviour and fire severity remains the biggest source of uncertainty in risk assessment and is an essential step in the tunnel design process. READ MORE

5. 4. Assessment of Ground Vibration for Early-Stage Design

   University essay from KTH/Bro- och stålbyggnad

   Author : Fadi Rafea Jameel Jameel; Patrick Francesco Joseph; [2022]
   Keywords : ;

   Abstract : Ground borne vibrations in urban areas can be caused by human activities such as railwayand road traffic, construction works and industrial manufacturing. These vibrations can playa significant role in human comfort and the disruption of vibration sensitive equipment inbuildings. READ MORE

6. 5. Exprimental Study of Spin-Up of a Fluid-Filled Cylindrical Tank

   University essay from Lunds universitet/Institutionen för energivetenskaper

   Author : Jakob Svensson; [2018]
   Keywords : CFD Computational Fluid Dynamics Experimental Physics Spinning Spin Flow Laser Image Analysis Acceleration Ekman Boundary Layer Rossby Vortex Parabola Particles; Physics and Astronomy;

   Abstract : To ensure safety on upper stage rockets, the fluid dynamic phenomenon known as sloshing in the liquid propellant tanks needs to be understood. CFD is a relatively cheap tool, but studies by Schmitt [7] suggest that models currently used for simulations do not predict the flow behavior. READ MORE