Flight-Path Angle Guidance for Aerogravity-Assist Maneuvers on Hyperbolic Trajectories

Mazzaracchio, Antonio

doi:10.2514/1.g000670

Cited by 12 publications

(20 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This phenomenon is observed when the red and blue regions (vertical in the case of AGAM) are horizontal in the figures when the PAGAM is applied (see Figs. [2][3][4][5][6][7][8][9][10][11][12]. The influence of the impulse during the AGAM dominates the energy variations due to two factors: the first one is the increment in the velocity of the spacecraft, which increases the influence of the aerodynamic force, and the second one is the additional velocity given to the spacecraft due to the instantaneous application of the propulsive force.…”

Section: Pagam With Negative Bank Anglesmentioning

confidence: 99%

“…This is the "aerogravity-assist maneuver" (AGAM). To studied the AGAM, it was assumed larger variations of the ballistic parameter to observe the influence of drag [2][3][4]. Recent developments in hypersonic unmanned vehicles would allow the application of these maneuvers for future missions, because they are technologically viable in the present and could give even better results using future technologies.…”

mentioning

confidence: 99%

“…The possible uses of this powered maneuver have been analyzed for planets and moons of the solar system [17][18][19][20][21][22][23][24]. When the maneuver is made close to planets that have significant atmosphere and using a spacecraft with wing-body shape (waverider), the AGAM could also be controlled by the direction and/or magnitude of the aerodynamic forces generated during atmospheric flight [2][3][4][25][26][27][28][29][30][31][32]. Since 2015, the combination of the GA with the application of an impulse and a passage by the atmosphere was studied.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Effects of Bank Angle During Powered Aerogravity-Assist Maneuver

Piñeros

Prado

2021

Journal of Spacecraft and Rockets

View full text Add to dashboard Cite

In a swing-by maneuver, the variation of energy of the spacecraft is controlled by the angle, velocity, and distance of approach. These parameters are defined by the incoming trajectory, when the spacecraft is far from the planetary atmosphere. The passage of the spacecraft by the atmosphere generates aerodynamic forces, affecting its trajectory and giving new forms of control, which are functions of the attitude of the spacecraft. This maneuver is called aerogravity-assist maneuver. This control can change the direction and magnitude of aerodynamic forces. Previous results showed the influence of the lift-to-drag ratio and the effects of the application of impulses in this maneuver. However, the variations of energy due to the control that can be given by the bank angle have not been studied before, and this study constitutes the main new aspect of the present paper. In this research, it is implemented the classical methodology to calculate the variations of energy to analyze the effects of the bank angle in aerogravity-assist maneuvers. This analysis can identify regions of collisions and the variations of energy as a function of the bank angle, giving new alternatives to this maneuver that are not available in the literature.

show abstract

Section: Pagam With Negative Bank Anglesmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Effects of Bank Angle During Powered Aerogravity-Assist Maneuver

Piñeros

Prado

2021

Journal of Spacecraft and Rockets

View full text Add to dashboard Cite

show abstract

“…In addition, an aerocapture maneuver can adjust the phase and flight velocity of an interplanetary probe to fly along an ideal trajectory. Such an aerocapture mode is called aerogravity assist (AGA) [17][18][19]. Note that in both cases, the target orbit is eventually reached after aerocapture through an intermediate transfer orbit, such as the stable manifold of a halo orbit or an interplanetary transfer orbit.…”

Section: Introductionmentioning

confidence: 99%

Rapid Construction of Aerocapture Attainability Sets Using Sequential Convex Programming

2022

View full text Add to dashboard Cite

This paper proposes a novel method to efficiently construct the aerocapture attainability set based on convex optimization. Using dimensionality reduction, constructing the attainability set is equivalent to solving a set of discrete points on its boundary. As solving each of the boundary points is a typical nonlinear optimal control problem, a sequential convex programming method is adopted. The efficiency and accuracy of the proposed algorithm is demonstrated by high-fidelity numerical results. This is the first time that the configuration of the aerocapture attainability set is precisely described by the state variables at atmospheric exit. Since the quantification of the set is significant for assessing the feasibility of performing an aerocapture maneuver, the proposed method can be used as a reliable tool for systematic design for aerocapture mission.

show abstract

“…The GAM, on the other hand, is projected from initial conditions to define the resulting orbit after the swingby, as a function of the state vector at the pericenter of the planet (which is a function of the angle of approach, the pericenter altitude, and velocity) (Broucke, 1988). The application of the AGAM in minor planets, improves the GAM, increasing the curvature of the GAM and, in some cases, giving more energy to the orbit of the spacecraft (Mazzaracchio, 2015).…”

Section: Introductionmentioning

confidence: 99%