Small satellites are a suitable alternative for large spacecraft for various space missions due to their flexibility, rapid production times, and cost-effectiveness. The development of micro-propulsion systems helps maximise the potential of miniaturised spacecraft. TU Delft contributes by researching novel techniques and developing its own small satellites. This project continued the development of a vaporising liquid micro-resistojet, constructed with commonly accessible materials and machines. The main objective was to implement a new setup to improve the accuracy of thrust measurements. Unfortunately, the nozzle geometry deformed during thruster reassembly due to a degraded sealing surface. This rendered comparison with previously obtained data meaningless. Furthermore, predictions made with an analytical model differed from the experimental results. With alterations made to both the thruster and the test bench, identifying the source of this discrepancy became complex. Recommendations were made to improve both the analytical model and the measurement accuracy of the setup.

Last January, yet another attempt to reach consensus on the growth of Schiphol has failed. Schiphol, KLM and other large airliners request a growth of 10,000 extra flight movements per year, while habitants, governors of municipalities and province and environmental organisations request a growth stop until 2023. The main arguments are noise disturbance in the surroundings of Schiphol and the negative effects of aviation on the local and global environment 1. In order to stop the limitations on aviation growth, structural changes will have to be made in the industry. One of the proposed solutions is to remove the conventional landing gear and make use of a ground based powered system to perform the landing and take-off. Firstly, the intended result is a reduction in fuel emissions due to the weight reduction of the aircraft: a conventional landing gear counts for approximately 4% of the maximum take-off weight of the aircraft. Secondly, the use of a ground based powered system provides for the opportunity to reduce noise pollution during take-off and landing. These two advantages are exactly tackling the two major issues that prevents airports like Schiphol, from growing...