Concepts
SDV concepts were proposed even before the Shuttle itself began flying. Proposed SDV concepts have included:
- Replacing the winged Space Shuttle Orbiter with an uncrewed, expendable cargo pod ("side-mount style" SDV)
- Removing the Orbiter and mounting an upper stage and payload atop the Space Shuttle external tank ("inline-style" SDV)
- Adding a large cargo container to the rear of the external tank, allowing launches of bulky materials (Aft Cargo Carrier)
- Replacing the Space Shuttle Solid Rocket Boosters (SRBs) with liquid rockets, including recoverable winged "flyback" boosters
- Creating vehicles from one or more Space Shuttle Solid Rocket Boosters, usually with some kind of an upper stage
- Removing the wings of an Orbiter at the end of its useful life, permanently attaching it to a Space Shuttle external tank, and launching the combination as a space station
Several such concepts are of particular note:
Read more about this topic: Shuttle-Derived Launch Vehicle
Famous quotes containing the word concepts:
“It is impossible to dissociate language from science or science from language, because every natural science always involves three things: the sequence of phenomena on which the science is based; the abstract concepts which call these phenomena to mind; and the words in which the concepts are expressed. To call forth a concept, a word is needed; to portray a phenomenon, a concept is needed. All three mirror one and the same reality.”
—Antoine Lavoisier (17431794)
“During our twenties...we act toward the new adulthood the way sociologists tell us new waves of immigrants acted on becoming Americans: we adopt the host cultures values in an exaggerated and rigid fashion until we can rethink them and make them our own. Our idea of what adults are and what were supposed to be is composed of outdated childhood concepts brought forward.”
—Roger Gould (20th century)
“Once one is caught up into the material world not one person in ten thousand finds the time to form literary taste, to examine the validity of philosophic concepts for himself, or to form what, for lack of a better phrase, I might call the wise and tragic sense of life.”
—F. Scott Fitzgerald (18961940)