نتایج جستجو برای: sail sign

تعداد نتایج: 56813  

Journal: :Journal of The Optical Society of America B-optical Physics 2022

Solar sails propelled by radiation pressure enable space missions that cannot be achieved using chemical rockets alone. Significant in-space propulsion for such as a solar polar orbiter may with sail deviates sunlight at large average angular direction. The momentum transfer efficiency of diffracted from sun-facing diffractive comprised periodic sawtooth prism elements is examined here. spectra...

Journal: :Journal of physics 2021

Abstract In order to satisfy the requirements of drag sail for future micro-satellite, device and dynamic research process are carried out. A mathematical model is established, static performance deployable mechanism analyzed at different temperature. The results show that there enough moment start deployment temperature range -70 100 °C, starting torque realize sail, acceleration reaches 1905 ...

Journal: :Astronomy and Astrophysics 2022

Context. Enigmatic dynamical and spectral properties of the first interstellar object (ISO), 1I/2017 U1 (Oumuamua), led to many hypotheses, including a suggestion that it may be an “artificial” spacecraft with thin radiation-pressure-driven light sail. Since similar discoveries by forthcoming instruments, such as Vera C. Rubin telescope Chinese Space Station Telescope (CSST), are anticipated, c...

Journal: :Aerospace Science and Technology 2021

An optimal steering law for sails that exploit both solar and infrared planetary radiation pressure is presented in this paper. The maximises the orbit raise over one revolution of sail around planet. indirect analytical approach, uses Pontryagin Minimum Principle, used to develop specialised laws sunlit eclipse cases a planar motion scenario. case emitted from planet, while finds attitude usin...

Journal: :Advances in Space Research 2023

A surface geometric constraint approach is used in designing the trajectories of a solar sail. We solve sail equation motion by obtaining generalized Laplace-Runge-Lenz (LRL) vector with assumption that cone angle constant throughout mission. family trajectory solutions can then be specified defining relates radial velocity to polar spacecraft. The method generate and analyze are constrained on...

Journal: :Acta Astronautica 1990

Journal: :Journal of Marine Engineering & Technology 2017

Journal: :Journal of Guidance, Control, and Dynamics 2015

Journal: :Journal of the Korean Society for Aeronautical & Space Sciences 2014

Journal: :Advances in Space Research 2021

The interaction between electromagnetic waves and matter is the working principle of a photon-propelled spacecraft, which extracts momentum from solar radiation to obtain propulsive acceleration. An example offered by sails, use thin membrane reflect impinging photons. may actually be transferred means various optical phenomena, such as absorption, emission, or refraction. This paper deals with...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید