Figure 1 - uploaded by James Biggs
Content may be subject to copyright.
The rotating reference frame The vectorial form of the equations of motion is given by r r r ′′ + 2ω × r r r ′ = ∇U + a a a SRP + a a a SEP (1) where r r r = [x, y, z] T is the non-dimensionalized position vector of the spacecraft, ω = [0, 0, 1] T is the non-dimensionalized angular velocity of the rotating frame, a a a SRP is the SRP acceleration, and a a a SEP is the SEP acceleration. The potential function U is given by

The rotating reference frame The vectorial form of the equations of motion is given by r r r ′′ + 2ω × r r r ′ = ∇U + a a a SRP + a a a SEP (1) where r r r = [x, y, z] T is the non-dimensionalized position vector of the spacecraft, ω = [0, 0, 1] T is the non-dimensionalized angular velocity of the rotating frame, a a a SRP is the SRP acceleration, and a a a SEP is the SEP acceleration. The potential function U is given by

Source publication
Conference Paper
Full-text available
This paper presents a scheme of a hybrid spacecraft which fuses a solar sail with a one-degree-of-freedom solar electric propulsion (SEP) fixed in the direction normal to the sail. This hybrid system significantly improves the available control acceleration in the normal direction of the sail and is more fuel-efficient than pure SEP spacecraft or h...

Context in source publication

Context 1
... equations of motion are expressed in a rotating frame as shown in Fig. 1, where the origin is at the Sun-Earth barycenter, the x-axis points in the direction of the Earth, the z-axis is the axis of the rotation of the Sun-Earth system, and the y-axis completes the triad. In addition, the Sun-Earth distance, the frame's angular velocity, and the mass of the Sun-Earth system are normalized to unity. ...

Similar publications

Article
Full-text available
The assessment of early life socioeconomic position (SEP) is essential to the tackling of social inequalities in health. Although different indicators capture different SEP dimensions, maternal education is often used as the only indicator in birth cohort research, especially in multi-cohort analyses. Household income, as a direct measure of materi...
Article
Full-text available
Background: Large health inequalities exist in the Netherlands among individuals with a high compared to a low socioeconomic position. Worksite health promotion interventions are considered promising to reduce these inequalities, however, current interventions seem not to have the desired effects. This study proposes 'moral case deliberation', a f...