Basics of Space Flight

acceleration angle applied assuming atmosphere axis body carried chemical close compared Consequently Consider considerable constant corresponds course density depends direction distance drive Earth effect efficiency electric electrons energy engine equal equation essentially example fact field final fission flight flow force fraction frame fuel fusion give given gravity heat hydrogen increase initial km/s launch launcher less limit lower mass material maximum mechanical motion moving needed neutron Note nuclear nucleus object obtained orbit particles payload physics planet planetary possible pressure principle probe problem produce propellant protons radius ratio reach reaction reduced reference relatively respect result rocket satellite shock shows simple solar space spacecraft special relativity speed sphere of influence stage structure sufficiently surface temperature terrestrial thermal thrust trajectory turn unit vehicle velocity