A Two-Stage-to-Orbit Spaceplane Concept With Growth Potential

The NASA STI Program Office... in ProfileSince its founding, NASA has been dedicated to theadvancement of aeronautics and space science. TheNASA Scientific and Technical Information (STI)Program Office plays a key part in helping NASAmaintain this important role.The NASA STI Program Office is operated byLangley Research Center, the Lead Center forNASA's scientific and technical information. TheNASA STI Program Office provides access to theNASA STI Database, the largest collection ofaeronautical and space science STI in the world.The Program Office is also NASA's institutionalmechanism for disseminating the results of itsresearch and development activities. These resultsare published by NASA in the NASA STI ReportSeries, which includes the following report types:TECHNICAL PUBLICATION. Reports ofcompleted research or a major significant phaseof research that present the results of NASAprograms and include extensive data or theoreti-cal analysis. Includes compilations of significantscientific and technical data and informationdeemed to be of continuing reference value.NASA's counterpart of peer-reviewed formalprofessional papers but has less stringentlimitations on manuscript length and extentof graphic presentations.TECHNICAL MEMORANDUM. Scientific andtechnical findings that are preliminary or ofspecialized interest, e.g., quick release reports,working papers, and bibliographies that containminimal annotation. Does not contain extensiveanalysis.CONTRACTOR REPORT. Scientific andtechnical findings by NASA-sponsoredcontractors and grantees.CONFERENCE PUBLICATION. Collectedpapers from scientific and technical confer-ences, symposia, seminars, or other meetingssponsored or cosponsored by NASA.• SPECIAL PUBLICATION. Scientific, technical,or historical information from NASA programs,projects, and missions, often concerned withsubjects having substantial public interest.• TECHNICAL TRANSLATION. English-language translations of foreign scientific andtechnical material pertinent to NASA's mission.Specialized services that complement the STIProgram Office's diverse offerings include creatingcustom thesauri, building customized databases,organizing and publishing research results.., evenproviding videos.For more information about the NASA STIProgram Office, see the following:• Access the NASA STI Program Home Page athttp ://www.sti.nasa. gov• E-mail your question via the Internet tohelp@sti.nasa.gov• Fax your question to the NASA Access HelpDesk at (301) 621-0134° Telephone the NASA Access Help Desk at(301) 621-0390Write to:NASA Access Help DeskNASA Center for AeroSpace Information7121 Standard DriveHanover, MD 21076-1320