The phrase "a spacecraft designed to" is correct and usable in written English.
You can use it when describing the purpose or function of a spacecraft in a technical or scientific context.
Example: "NASA is developing a spacecraft designed to explore the outer planets of our solar system."
Alternatives: "a spacecraft intended to" or "a spacecraft built to".
What the Cassini scientists find out could help set the stage for a return mission with a spacecraft designed to detect or even bring back samples of life.
The mission was the first demonstration for NASA of a spacecraft designed to ferry cargo and perhaps eventually astronauts to the International Space Station.
The next comet mission was not until 1998, when NASA launched Deep Space 1, a spacecraft designed to test a variety of new technologies.
But never before have we reached out to Mars with a spacecraft designed to address such a challenging objective as evaluating the prospects for future missions aimed at the search for life.
This was, after all, a spacecraft designed to be flown.
Flying farther than a spacecraft designed to carry humans had flown in more than 40 years, EFT-1 marked a milestone for NASA and (modern) human space exploration.
The team are currently working to develop something called a gravity tractor, a theoretical spacecraft designed to deflect dangerous matter away from the earth's surface.
A missing spacecraft designed to study comets may have broken up during a rocket firing intended to send it deep into space, mission officials said today.
A NASA spacecraft designed to look for comets turned its cameras homeward, capturing a unique view of the moon passing in front of the Earth as seen from 31 million miles away.
Elon Musk has taken the wraps off a new spacecraft designed to ferry up to seven astronauts to the International Space Station.
Space engineers are making final preparations for the launch of a robot spacecraft designed to sniff out signs of life on Mars.
