Launch configuration of SL-2, SL-3 and SL-4 manned missions showing Command and Service Module (CSM) aboard Saturn IB launch vehicle.

In addition to its prime role of ferrying the crew, the CSM supports
experiments described herein by carrying life-limited support items
such as film into orbit and by returning experiment samples, film
and other data to earth.

Several experiments are also carried and operated in the I. U. portion of this vehicle.

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