ssapy_toolkit.Rockets.rescale_burn

ssapy_toolkit.Rockets.rescale_burn(a0, m0, t0, m=None, t=None, mode='constant_thrust')

Rescale a burn given a reference case (a0, m0, t0).

Parameters:

• a0 (float or array) – Reference acceleration (m/s^2)

• m0 (float or array) – Reference mass (kg)

• t0 (float or array) – Reference duration (s)

• m (float or array or None) – New mass (kg). If None, uses m0.

• t (float or array or None) – New duration (s). If None, uses t0.

• mode (str) – “constant_thrust” -> thrust F is held constant; duration doesn’t change accel. “constant_impulse” -> total impulse I = F*t is held constant; changing duration changes thrust.

Returns:

• a (float or array) – New acceleration (m/s^2)

• t (float or array) – New duration (s) (the input ‘t’ if provided, else t0)

• dv (float or array) – Approx delta-v assuming mass stays constant during the burn: dv = a * t

• F (float or array) – Thrust used for the new case (N)

• I (float or array) – Total impulse used for the new case (N*s)