Blue Scout Junior
The first launch of an XRM-91 took place on Sep. 21, 1960, making it the first Blue Scout configuration to fly. The mission was supposed to involve radiation and magnetic field measurements at distances of up to 26,700 km (16,600 miles) from Earth, and while the rocket achieved this altitude, the telemetry system failed so that no data were received. The second launch in November ended with a failure during second stage burn. The third flight was to measure particle densities in the Van Allen belts and reached a distance of 225,000 km (140,000 miles), but again a telemetry failure prevented the reception of scientific data. The fourth and final XRM-91 mission, in December 1961, also carried particle detectors and was the only completely successful flight of the initial Blue Scout Junior program. The Blue Scout Junior would have been easily powerful enough to put a small satellite in low Earth orbit but was never used to do so.
Related categories ROCKETS, MISSILES, AND LAUNCH VEHICLES
HISTORY OF ROCKETRY
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