The lunar projectile appeared in the Jules Verne novel 'From the Earth to the Moon' - about building a space gun/cannon to launch three people in a projectile with could eventually land on the moon.
Jules Verne Lunar Projectile Papercraft [Download]
Aliens P5000 Power Loader Papercraft [Related Posts]
Sci-fi Spaceship Papercraft
Eliminator Spaceship Papercraft
Gradius V - Vic Viper T305 Papercraft
Argon Buster Papercraft