{'fraction_non_alphanumeric': 0.02536997885835095, 'fraction_numerical': 0.008456659619450317, 'mean_word_length': 5.771428571428571, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Progress and Plans for System Demonstration of a Scalable Square Solar Sail

In 2003 the NASA In-Space Propulsion (ISP) program began sponsoring extensive development and demonstration activities of solar sail system technology. Significant efforts are underway to design, model, build and test large-scale systems. Progress on system configuration, analysis developments, performance projections, and plans for ground demonstration of a scalable sail system are discussed.