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David Eagle


Last seen: Today Active since 2012

Aerospace engineer (retired) Professional Interests: aerospace trajectory optimization

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Submitted


Gravity Perturbed Optimal Orbital Transfer Analysis - SNOPT
Optimal two impulse transfer subject to non-spherical gravity perturbations

5 days ago | 2 downloads |

Submitted


Gravity Perturbed Optimal Orbital Transfer Analysis - OTB
Optimal two impulse transfer subject to non-spherical gravity perturbations - Optimization Toolbox version

5 days ago | 1 download |

Submitted


Optimal Impulsive Orbital Transfer - SNOPT version
MATLAB script for the solution of the one and two impulse orbit transfer between two Earth orbits.

7 days ago | 1 download |

Submitted


Optimal Impulsive Orbital Transfer - OTB version
MATLAB script for the solution of the one and two impulse orbit transfer between two Earth orbits.

7 days ago | 5 downloads |

Submitted


Gravity-perturbed Hohmann Transfer - OTB version
MATLAB script that solves the non-spherical gravity-perturbed two impulse Hohmann orbit transfer problem.

15 days ago | 7 downloads |

Submitted


The Gravity Perturbed Hohmann Transfer - SNOPT version
MATLAB script for solving the Hohmann transfer problem perturbed by non-spherical Earth gravity.

15 days ago | 4 downloads |

Submitted


MATLAB solutions of Lambert's problem
MATLAB functions and scripts for solving the geocentric and heliocentric Lambert problem.

30 days ago | 27 downloads |

Submitted


Computer Methods for Aerospace Trajectory Optimization
Additional technical documentation for the Orbital Mechanics with MATLAB scripts posted on the Mathworks File Exchange.

1 month ago | 11 downloads |

Submitted


MATLAB functions for solving Lambert's problem
Three MATLAB functions and a script that demonstrates how to interact with each Lambert routine.

1 month ago | 10 downloads |

Submitted


Gravity-Assist with a Powered Flyby - OTB version
MATLAB script that can be used to design and optimize interplanetary trajectories that include a powered flyby gravity assist.

1 month ago | 4 downloads |

Submitted


Gravity-Assist with a Powered Flyby - SNOPT version
MATLAB script that can be used to design and optimize interplanetary trajectories that include a powered gravity assist.

1 month ago | 1 download |

Submitted


Gravity-assist Trajectory Design and Analysis - SNOPT
A MATLAB Script for Interplanetary Gravity-Assist Trajectory Design and Optimization

2 months ago | 13 downloads |

Submitted


Parametric Analysis of TLI Delta-V Lunar Transfer
Parametric Analysis of Minimum TLI Delta-V Lunar Transfer Trajectories

3 months ago | 5 downloads |

Submitted


Parametric Analysis of TLI Delta-V Lunar Trajectories - OTB
Optimization Toolbox version of the tli_sweep MATLAB script that performs a parametric sweep of TLI requirements for Lunar traje...

3 months ago | 2 downloads |

Submitted


A MATLAB Script for Predicting Equinoxes and Solstices
Predict the calendar date & UTC time of the equinoxes and solstices for a user-defined calendar year

9 months ago | 3 downloads |

Submitted


Ballistic Interplanetary Trajectory Optimization - OTB
Optimization Toolbox version of the MATLAB script which solves the two impulse, patched-conic interplanetary trajectory problem....

10 months ago | 3 downloads |

Submitted


Numerical Prediction of Orbital Events
MATLAB script and user's manual for predicting important root-finding and extrema orbital events

11 months ago | 6 downloads |

Submitted


A MATLAB Script for Predicting Solar Eclipses
Predict local circumstances of solar eclipses.

11 months ago | 2 downloads |

Submitted


Propagating Interplanetary Trajectories from Earth to Mars
Numerically integrate the orbital equations of motion of an Earth to Mars interplanetary trajectory.

12 months ago | 7 downloads |

Submitted


A MATLAB Implementation of a Jean Meeus Lunar Algorithm
compute the mean equinox of date position of the moon using the algorithm in chapter 45 of Astronomical Algorithms by Jean Meeus...

1 year ago | 1 download |

Submitted


Converting a state vector/orbital elements to a TLE
MATLAB scripts that can be used to calculate an a Two Line Element (TLE) from a user-provided osculating state vector or orbital...

1 year ago | 28 downloads |

Submitted


N-body, Single Gravity-Assist Trajectory Design - SNOPT
Divide-and-conquer approach to solving a single gravity assist interplanetary trajectory subject to n-body perturbations

1 year ago | 1 download |

Submitted


N-body, Single Gravity-Assist Trajectory Design - OTB
Divide-and-conquer approach to solving a single gravity assist interplanetary trajectory subject to n-body perturbations

1 year ago | 2 downloads |

Submitted


Geodetic and Geocentric Coordinates
A suite of MATLAB functions for converting between geodetic and geocentric coordinates.

2 years ago | 2 downloads |

Submitted


Halo Orbit Design Using Differential Correction
Script for creating "re-fined" initial conditions for Halo orbits in the Earth-Moon circular-restricted, three-body problem.

2 years ago | 9 downloads |

Submitted


Halo Orbit Design using Richardson's Algorithm
MATLAB script for creating graphic displays of Halo orbits in the circular-restricted, three-body problem.

2 years ago | 9 downloads |

Submitted


Ballistic Trajectory Optimization from Earth to an Asteroid
MATLAB script for optimizing two-body, ballistic trajectories from Earth to the an asteroid.

2 years ago | 6 downloads |

Submitted


The Circular-Restricted Three-Body Problem
Compute and plot characteristics of the circular-restricted three-body problem.

2 years ago | 26 downloads |

Submitted


The Long-term Evolution of Geosynchronous Transfer Orbits
Interactive MATLAB script that predicts the long-term evolution of geosynchronous transfer orbits.

2 years ago | 1 download |

Submitted


Rise and Set of the Sun, Moon and Planets
Topocentric rise and set of the Sun, Moon and planets. Source ephemeris is DE421 with MICE and NOVAS routines.

2 years ago | 2 downloads |

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