the primary mission objectives for little joe as seen in late 1958 (in addition to studying the capsule dynamics at progressively higher altitudes) were to test the capsule escape system at maximum dynamic pressure, to qualify the parachute system, and to verify search and retrieval methods. but since each group of specialists at work on the project sought to acquire firm empirical data as soon as possible, more exact priorities had to be established. the first flights were to secure measurements of inflight and impact forces on the capsule; later flights were to measure critical parameters at the progressively higher altitudes of 20,000, 250,000, and 500,000 feet (6, 75, and 150 km). the minimum aims of each little joe shot could be supplemented from time to time with studies of noise levels, heat and pressure loads, heat shield separation, and the behavior of animal riders, so long as the measurements could be accomplished with minimum telemetry. since all the capsules boosted by the little joe rockets were expected to be recovered, onboard recording techniques would also contribute to the simplicity of the system.