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Nasa Search NASA.gov NASA TV MORE STORIES Apollo 15 Jul 9, 2009 Apollo 15 Apollo 15 official mission patch This is the insignia designed for the Apollo 15 lunar landing mission. The circular design features the colors red, white and blue. On the outer portion of the patch a narrow band of blue and a narrow band of red encircle a wider band of white. The large disc in the center of the emblem has red, white and blue symbols of flight, superimposed over an artist's concept of the Apollo 15 Hadley-Apennine landing site of gray tone. Credits: NASA "Climb aboard the Lunar Rover..." Mission Objective Apollo 15 was the first of the Apollo "J" missions capable of a longer stay time on the moon and greater surface mobility. There were four primary objectives falling in the general categories of lunar surface science, lunar orbital science and engineering-operational. The mission objectives were to explore the Hadley-Apennine region, set up and activate lunar surface scientific experiments, make engineering evaluations of new Apollo equipment, and conduct lunar orbital experiments and photographic tasks. Exploration and geological investigations at the Hadley-Apennine landing site were enhanced by the addition of the Lunar Roving Vehicle, or LRV. Setup of the Apollo Lunar Surface Experiments Package, or ALSEP, was the third in a trio of operating ALSEPs (on Apollos 12, 14 and 15). Orbital science experiments were concentrated in any array of instruments and cameras in the scientific instrument module, or SIM, bay. Engineering and operational objectives included evaluation of modifications to the lunar module, or LM, made for carrying a heavier payload and for a lunar stay time of almost three days. Changes to the Apollo spacesuit and to the portable life support system, or PLSS, were evaluated, and performance of the Lunar Roving Vehicle and the other new J-mission equipment that went with it - lunar communications relay unit, or LCRU, and the ground-controlled television assembly, or GCTA.