This fact is used extensively in rocketry where hypersonic flows are required and where propellant mixtures are deliberately chosen to further increase the sonic speed.
He also lacked interest in discussions with people who had less understanding of rocketry than he did, feeling that his time was extremely constrained.
The organization focuses on many related interests: telescopes, binoculars, astrophotography, computer planetaria, astronautics, cosmology, meteors, rocketry, sky lore and celestial navigation.
Clubs range from robotics, rocketry, and speech and debate, to those focused on multicultural activities, environmental awareness, and community service.