PARIS — Startup smallsat launch-service provider PLD Space has suffered a series of engine test-firing anomalies in recent months, including one explosion, that will delay its first suborbital test flight for an undetermined amount of time, PLD Chief Executive Raul Torres said.

Torres said the Miura-1 LOX-kerosene engine’s basic design does not appear to be at issue in the problems, which have occurred during startup and shutdown and not during the engine’s nominal 3- to 4-minute burn.

He said the problem . . .

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