An experimental vertical take-off and landing rocket crashed during its most recent test on Tuesday.

An experimental vertical take-off and landing rocket crashed during its most recent test flight on Tuesday.

The Xaero had already flown more than 100 test flights, so this crash does not make it a failure. Like all engineering tests, the flight will only be a failure if they cannot figure out what went wrong.

This update says they have located the problem, the failure of a valve.