CAT-2

 1980-F01

---

The CAT capsule on the second Ariane launch, LO2, had a mass of 334 kg. It was similar to CAT 01, with a conical adapter above the cylindrical CAT module, but apparently without the ballast. Above CAT was a further cylinder with a transverse tube on which was mounted AMSAT, hanging off one side.

The Ariane was destroyed less than two minutes after launch from Kourou when the first stage engines shut down early. LO2 was targeted to a 17.5 deg trajectory for better tracking; the yaw manuever at T+2:41 changes the azimuth from 93.5 deg to 110.5 deg. At the time of the failure, before this yaw, the inclination was probably around 6.0 deg.

CAT 2
Date	Time	Event	Orbit
1980 May 23	1429:39	Launch by Ariane LO2	CSG ELA1
	1429:43	T+4s Engine D pressure fluctuation
	1429:45	T+6s all normal
	1430:07	T+28s Engine D pressure fluctuation
	1430:47	T+64s roll torque
	1431:23	T+104s roll at 60 deg per second
	1431:27	Self-destruct T+108s, 30 km