Space World: August 1975

 https://welib.org/md5/e5c18492b1e542b6b5c6dc8011b9a567

Explorer 30

 1965-093A

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NRL's Solrad 8 (SR 08) satellite was the first launched under NASA's auspices as part of the Explorer program. It had the NRL internal designation PL 145 and was given the NASA payload name Solar Explorer A and the post-launch designation Explorer 30. The satellite was launched as a special IQSY (International Quiet Sun Year) Solar Explorer project. Mass of SR VIII~was 57 kg. The satellite was a 24-inch Vanguard-derived sphere, spin-stabilized at 60 rpm.

Launch was on 1965 Nov 19 by Scout X-4 from Wallops Island. The orbit was 100.8 min, 704 x 891 km x 59.7 deg. Solrad 8 transmitted until 1967 Nov 20 and ended continuous science operations in Aug 1967; it was replaced by OGO 4.

Explorer 30
Date	Time	Event	Orbit
1965 Nov 19	0448:27	Launch by Scout	WI
		T+1:14 St 1 burnout
		T+1:20 St 2 burn
		T+2:03 St 2 burnout
		T+2:11 Fairing sep
		T+2:12 St 3 burn
		T+2:45 St 3 burnout
		T+10:22 St 3 sep
	0458:54	T+10:27 St 4 burn
	0459:16	T +10:49 St 4 burnout
	0500?	St 4 sep	100.8 704 x 891 x 59.7
		Yo-yo despin
1967 Nov 20		End of tx

Payload:

• UV detector 1080-1350A
  

• UV detector 1225-1350A
  

• X-ray detector 1-8 A
  

• X-ray detector 1-8A, 0.5-3A (two detectors)
  

• X-ray detector 8-16A (two detectors)
  

• X-ray detector 0-20A
  

• X-ray detector 44-60A