Parametrization of Triple Screw Pumps for Aerospace Applications

<p>Triple Screw Pumps, a form of positive displacement pump, offer steady, high-pressure flow. In very small launch vehicles or upper stages turbopumps are not practical. This paper examines the performance of triple screw pumps to determine if they may serve as an alternative to turbopumps for use in small launch vehicles or upper stages. To this end, the geometry of the screws is first determined from the relative sizes of the screws and tooth height. From this — along with the screw angle and screw clearance — the performance parameters of flow rate, output pressure, and efficiency can be computed. These results can be compared against experimental results using a 20mm 5-3-1-4 triple screw pump. The pump was able to produce a flow rate of 37mL/s at 1000rpm and an output pressure of 75.3kPa at 1200rpm — both within expected result range. This document may serve as a starting point for future pump designs and design requirements.</p>

Name thesis:degree_name

Master of Science in Aerospace Engineering

Level thesis:degree_level

Thesis - Open Access

Discipline thesis:degree_discipline

Aerospace Engineering

Year

2018

Author dc:creator

• Putira, Allison

• parametrization
• triple screw pumps
• aerospace
• Aerospace Engineering

Repository record dc:identifier

https://commons.erau.edu/edt/404

OAI identifier oai:identifier

oai:commons.erau.edu:edt-1403