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Propulsion Challenges for small spacecraft: 2005

Tsinghua Science and Technology 2006年第5期11卷 507-514页

作者： Vadim Zakirov 李路明 Tsinghua Space Center School of Aerospace Tsinghua University

small （〈100 kg） spacecrafts are being developed in many countries but their propulsion systems still have many challenges. Although there is demand for small spacecraft propulsion, the number of missions at present is small due to several commercial and technical reasons. Poor performance of existing small spacecraft propulsion systems is one of the main reasons for the small number of missions. Several reasons are given for the poor performance of existing small spacecraft propulsion. Suggested improvements focus on small spacecraft and propulsion hardware mass optimization rather than on specific impulse enhancement. Propellantless propulsion systems are also recommended for small spacecraft interplanetary missions.

关键词： propulsion small spacecraft performance enhancement payload

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Modeling the temperature shock of elastic elements using a one-dimensional model of thermal conductivity

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International Journal of Modeling, Simulation, and Scientific Computing 2020年第6期11卷 220-228页

作者： D.A.Belousova V.V.Serdakova Multidisciplinary Engineering Center Joint Stock Company“SMARTEC”Samara Russia Amur State University BlagoveshchenskRussia

This paper considers the task of evaluating micro-accelerations arising due to the temperature shock of large elastic elements when a small spacecraft leaves the Earth’s *** this case, a one-dimensional model of thermal conductivity is used. Its solution wasobtained by the method of direct approximation with the construction of differenceschemes. It is shown that the accuracy of estimating micro-accelerations is commensurate with the accuracy of solving by a three-dimensional model of thermal *** proposed model allows reducing the time to obtain estimates and significantly simplifies the task at hand. The results of the work can be used in the formation of thedynamic characteristics of a small spacecraft for technological purposes.

关键词： small spacecraft simulation of temperature shock micro-acceleration gravitationally sensitive processes

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A Pathway to small Satellite Market Growth

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Advances in Aerospace Science and Technology 2016年第1期1卷 14-20页

作者： Anders Kose Nervold Joshua Berk Jeremy Straub David Whalen Department of Entrepreneurship University of North Dakota Grand Forks USA Department of Space Studies University of North Dakota Grand Forks USA Department of Computer Science University of North Dakota Grand Forks USA

The United States is experiencing a renaissance in interest in space due to the advent of new lowercost small spacecraft. New launch entrants, such as Interorbital Systems, promise to lower launch cost levels. Many developers also benefit from free-to-developer launch services from NASA or the ESA. Unfortunately, existing commercial off the shelf (COTS) CubeSat hardware is priced based on amortization of design costs across low-sales volume. A lack of trained staff in any one of the numerous disciplines required for spacecraft design or other resources required for in-house development restricts entry into the small satellite industry to those who can afford expensive COTS hardware or pay for significant design expenses. With entry-level satellite hardware still priced in the six-figure range, limited market growth is expected even as the average CubeSat launch cost continues to decline. A new archetype could lower barriers to entry for building small satellites. A free, public-domain architecture for building a small satellite could allow low-cost, in-house satellite development. Under this paradigm, the expenses for initiating a small satellite program are limited to component and launch vehicle costs. The proposed framework allows for broad access to small satellite hardware, greatly increasing the size of the small satellite developer community. In the context of the small satellite market, freely offering plans to construct an entry-level satellite will court new non-traditional actors into building space hardware for launch on commercial and government small satellite launchers. The low-cost, high flight rate possible with the next generation of launch systems affords operators the freedom to experiment and innovate in a risktolerant environment. Successfully demonstrating products and services utilizing low-risk, publicdomain plans will stimulate demand for mature and more capable flight systems in the retail marketplace. If technical schools, community colle

关键词： CubeSat small spacecraft Educational Economics Market Growth

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