Sphere of Influence in Patched-Conic Methods

Crenshaw, Jack W.

doi:10.2514/3.2024

Cited by 4 publications

(2 citation statements)

References 2 publications

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“…By introducing the concept of sphere of influence (SOI), a multi-body system can be divided into several two-body systems. Each portion of the trajectory is treated as a two-body trajectory about the most influential body [23]. Then at the boundary of SOI, a transition is made from one central gravity body to the other by matching the relative position and velocity in the appropriated conic trajectories.…”

Section: Patched Conic Modelmentioning

confidence: 99%

Overview of Earth-Moon Transfer Trajectory Modeling and Design

Zhang¹,

Yu²,

Dai³

2023

Computer Modeling in Engineering &Amp; Sciences

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The Moon is the only celestial body that human beings have visited. The design of the Earth-Moon transfer orbits is a critical issue in lunar exploration missions. In the 21st century, new lunar missions including the construction of the lunar space station, the permanent lunar base, and the Earth-Moon transportation network have been proposed, requiring low-cost, expansive launch windows and a fixed arrival epoch for any launch date within the launch window. The low-energy and low-thrust transfers are promising strategies to satisfy the demands. This review provides a detailed landscape of Earth-Moon transfer trajectory design processes, from the traditional patched conic to the state-of-the-art low-energy and low-thrust methods. Essential mechanisms of the various utilized dynamic models and the characteristics of the different design methods are discussed in hopes of helping readers grasp the basic overview of the current Earth-Moon transfer orbit design methods and a deep academic background is unnecessary for the context understanding.

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Section: Patched Conic Modelmentioning

confidence: 99%

Overview of Earth-Moon Transfer Trajectory Modeling and Design

Zhang¹,

Yu²,

Dai³

2023

Computer Modeling in Engineering &Amp; Sciences

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“…Table 1 shows the orbital parameters of this body, which are: semi-major axis (a), eccentricity (e), perihelion distance (q), inclination (i), longitude of the ascending node (Ω), argument of perigee (ω), and orbital period (P B ). In addition, Bennu has a mass of 7.8 × 10 10 kg, with dimensions 0.565 km × 0.535 km × 0.508 km, and a rotation period of 4.297 h. The choice of the initial date for the position of the bodies (Bennu and Earth) was obtained through a model based on the patched-conics (Crenshaw 1963;Miele & Wang 1999;Sanchez et al 2019). The val (2020-2040).…”

Section: Determination Of the Initial Position Of The Bodiesmentioning

confidence: 99%

On the Effects of Solar Radiation Pressure on the Deviation of Asteroids

Marchi

Sanchez

Venditti

et al. 2021

RMxAA

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In this work, we study the effects of solar radiation pressure (SRP) on the problem of changing the orbit of an asteroid to support planetary defense, scientific research, or exploitation of materials. This alternative considers a tethered reflective balloon (or a set of reflective balloons) attached to the asteroid, with a high area-to-mass ratio, to use the SRP to deflect a potentially hazardous asteroid (PHA) or to approximate the target asteroid to Earth. The tether is assumed to be inextensible and massless, and the motion is described only in the orbital plane of the asteroid around the Sun. The model is then used to study the effects that the tether length, the reflectivity coefficient, and the area-to-mass ratio have on the deviation of the trajectory of the asteroid.

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A new method of patched-conic for interplanetary orbit

Zhao

2018

Optik

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Sphere of Influence in Patched-Conic Methods

Cited by 4 publications

References 2 publications

Overview of Earth-Moon Transfer Trajectory Modeling and Design

Overview of Earth-Moon Transfer Trajectory Modeling and Design

On the Effects of Solar Radiation Pressure on the Deviation of Asteroids

A new method of patched-conic for interplanetary orbit

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