What went wrong

1997-04-23T00:00:00

For cost reasons, the Ariane 501 was fitted with two Ariane 4 inertial-reference systems (IRS), and no tests were performed with the real IRS to verify that they would behave correctly during the Ariane 5 flight, although simulations were performed. At 6s after main engine start (HO), the Ariane 5 ...

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