The phrase "aboard a spacecraft" is correct and usable in written English.
It can be used when referring to being inside or on a spacecraft, typically in the context of space travel or exploration.
Example: "The astronauts were excited to be aboard a spacecraft heading to the International Space Station."
Alternatives: "on a spacecraft" or "inside a spacecraft".
This research used an instrument aboard a spacecraft orbiting Mars.
Peculiarities of functioning of spherical ion traps designed for measurements aboard a spacecraft are analyzed.
A device she was instrumental in developing is aboard a spacecraft on a historic mission to a distant asteroid.
The flights would be the first to give nonprofessional astronauts the chance to go into orbit aboard a spacecraft launched from the United States.
Those individuals who first traveled aboard a spacecraft operated by the Soviet Union or Russia are known as cosmonauts (from the Greek words for "universe" and "sailor").
The arrangement of the apparatus "DACON" for examining buoyancy driven thermal convection caused by microgravity environment aboard a spacecraft is expounded.
During a visit to Russia late last year, Mr. da Silva, rather than lose the money already invested in Colonel Pontes's training, signed an agreement that made the Brazilian astronaut a paying customer aboard a Russian spacecraft.
During the four-year program, many firsts in spaceflight were achieved by the two nations, including the first American astronaut to launch aboard a Soyuz spacecraft, the largest spacecraft ever to have been assembled at that time in history, and the first American spacewalk using a Russian Orlan spacesuit.
More specifically, astronauts are those persons who went to space aboard a U.S. spacecraft.
Two writers decide to pen a claustrophobic thriller about a murderous alien that runs riot aboard a distant spacecraft.
At press time, Lance Bass, of the musical group 'N Sync, was keeping hope alive that sometime this year he would rocket into space aboard a Russian spacecraft.
