Vanguard SLV-2

  1958-F06

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The second X-ray payload was also a failure when SLV-2 was lost on 1958 Jun 26. The second stage cut out after only 8s because the oxidizer feed system was clogged, fouling the engine. The wreckage was recovered from the Atlantic off Bermuda.

Vanguard X-ray
Date	Time	Event	Orbit
1958 Jun 26	0501:52	Launch by Vanguard SLV-2	CC LC18A
	0504:15	T+2:23 Stage 1 cutoff, sep
	0504:23	T+2:32 Stage 2 cutoff at 8s
	0504	T+2:52 Nose cone sep
	0506:48	T+4:56 Stage 2 apogee	165 km
	0509	T+7:13 Reentry	82 km
	0510	T+8:40 Stage 2 impact, range 460 km