[net.space] Space Shuttle mission designator explanation

JPAnderson.DODCSC%MIT-MULTICS@sri-unix.UUCP (01/18/84)

The upcoming space shutttle mission has been designated as 41B, the 4
corresponding to the fiscal year, the 1 corresponding to the launch
site, and the B corresponding to the payload item of the FY. The first
payload of the FY, A, was spacelab. The launch site designators are 1
for Kennedy and 2 for Vandenberg.