Specific Issues
Space Shuttle missions to the International Space Station were restricted by beta angle cutout. Beta angle is defined as the angle between the orbit plane and the vector from the Sun. Due to the relationship between an orbiting object's beta angle (in this case, the ISS) and the percent of its orbit that is spent in sunlight, solar power generation and thermal control are affected by that beta angle. Shuttle launches to the ISS were normally only attempted when the ISS is in an orbit with a beta angle of less than 60 degrees.
Read more about this topic: Launch Window
Famous quotes containing the words specific and/or issues:
“No more distressing moment can ever face a British government than that which requires it to come to a hard, fast and specific decision.”
—Barbara Tuchman (1912–1989)
“The hard truth is that what may be acceptable in elite culture may not be acceptable in mass culture, that tastes which pose only innocent ethical issues as the property of a minority become corrupting when they become more established. Taste is context, and the context has changed.”
—Susan Sontag (b. 1933)