std::lambert

Functions

solve_lambert

pub sync fn solve_lambert ( r1 : ksp::math::Vec3,
                            r2 : ksp::math::Vec3,
                            tof : float,
                            mu : float,
                            clockwise : bool ) -> (iters : int, v1 : ksp::math::Vec3, v2 : ksp::math::Vec3)

Solve Lambert’s problem, i.e. calculate the Kepler orbit to get from point r1 to point r2 in time tof (time of flight).

mu is the standard gravitational parameter of the central body
clockwise defines if a clockwise or counter-clockwise orbit should be calculated
The result v1 is the required velocity at r1
The result v2 is the required velocity at r2

This is based on the solver developed by Dario Izzo Details can be found here: https://arxiv.org/pdf/1403.2705.pdf Released under the GNU GENERAL PUBLIC LICENSE as part of the PyKEP library:

Parameters

Name	Type	Optional	Description
r1	ksp::math::Vec3
r2	ksp::math::Vec3
tof	float
mu	float
clockwise	bool