Mr. Spaceship By Philip K. Dick

One day a team of researchers led by Philip Kramer decide to build a spaceship which is powered by a human brain humanization of the spaceship in order to achieve greater dominance in war. They find the ideal candidate in Kramer's old professor, a dying man who volunteers to donate his brain to the project. To end stalemate with the Yucconae, an alien race, are living organisms that can traverse outer space. The Earth’s drone rockets do not have a chance against the flexibility