Sensitivity of Hybrid NEP-Chemical Vehicle Mass to Assumptions for Crewed Opposition-Class Mars Missions
Abstract
View Video Presentation: https://doi.org/10.2514/6.2021-3612.vid This research illustrates the impact of different technology choices and their associated performance on overall sizing for a hybrid Nuclear Electric Propulsion (NEP) and chemical crewed Mars transportation vehicle. A set of models for the trajectory and vehicle mass, power system specific mass (alpha), and power conversion performance enable the analysis. Vehicle mass required to close the mission is calculated as a function of alpha and specific impulse (Isp) for multiple choices of high-level assumptions including system alpha vs. power scaling and electric thruster type. System alpha is built up and compared for multiple cases of technology assumptions. A Brayton cycle model is used to illustrate the alpha sensitivities to assumptions in cycle design such as peak operating temperature and component performance. The analysis illustrates how technology performance sensitivities affect the alpha and thus vehicle sizing for a range of mission and technology assumptions.
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- Authors
- Duchek, M. E., Pensado, A., Clark, M., Harnack, C., Grella, E., Machemer, W., & Qu, M.
- Affiliations
- Analytical Mechanics Associates (United States) (US)
- Venue
- AIAA Propulsion and Energy 2021 Forum
- Published
- 2021-07-28
- OpenAlex
- W3187042790
- Cited by
- 4
- References
- 11
- Citations by year
- 2023: 2 · 2022: 2
- FWCI
- 1.74
- Type
- conference paper
- Language
- en
- Open access
- closed
- Locations
- AIAA Propulsion and Energy Forum (publishedVersion)
- Topics
- Physical Sciences › Engineering › Aerospace Engineering › Spacecraft Design and Technology
- Physical Sciences › Engineering › Aerospace Engineering › Rocket and propulsion systems research
- Physical Sciences › Environmental Science › Global and Planetary Change › Advanced Aircraft Design and Technologies
- Keywords
- nuclear electric propulsion, human Mars missions, Brayton cycle, electric thrusters, specific impulse, power conversion efficiency
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