Engineering topics

Teixeira, Charles

Publications and source records attributed to Teixeira, Charles.

6 records

NASA NTRS1992

Manned transportation systems design considerations

Manned transportation mission and programmatic requirements and how they affect spacecraft size, mass and complexity are presented. Some of these requirements include fundamental issues such as the degree of separation of cargo and people, abort requirements and the issue of man rating. Attention is given to design considerations, crew size and mission requirements, payloads, crew physiologic considerations, and a vehicle health monitoring and emergency detection system.

Teixeira, Charles↗

NASA NTRS1990

Earth-to-orbit launch system alternatives

A robust earth-to-orbit (ETO) transportation system, designed to facilitate the continuing human exploration of space, is discussed. The concept stresses larger lift capability and minimized on-orbit operations, of which the assembly and refueling operations are given priority. The modularity of the system is based on the required compatibility with the Space Shuttle vehicle, and it offers resiliency and reduced development costs. The support of lunar and Mars missions is interrelated with the mission logistics, the design of a transfer vehicle, the extent of reusability, and the required on-orbit operations. The transfer systems, the magnitude and frequency of propellant deliveries, and some human transportation requirements are considered with respect to vehicle concepts and flight rate strategies.

Teixeira, Charles↗

NASA NTRS1990

Evolutionary transportation concepts

Shuttle transportation derivatives based on the National Space Transportation System are described in terms of the 'Block-II' system and the possible architectures. The evolutionary strategy is based primarily on a liquid-rocket-booster system, a propulsion module, and a Block-II orbiter that can accommodate a range of mission payloads. The derivative systems are shown to offer enhanced capabilities with relatively low development costs and at minimum risk.

Teixeira, Charles↗

NASA NTRS1989

A Shuttle evolution strategy

An overview of a potential Space Shuttle evolution strategy is presented. A Shuttle development study which reviews past and ongoing studies, implements a Shuttle Enhancement Data Base, and develops a methodology and a strawman evolution strategy is discussed. The long-term goals of a Shuttle evolution strategy, including increased reliability, lower cost, robustness, resiliency, increased capability, and assured access are addressed.

Teixeira, Charles↗

NASA NTRS1989

A next generation Space Shuttle concept

Work done over the past two years for the NASA/Johnson Space Center on possible evolutionary paths of the present Space Shuttle Orbiter and system to meet the goals of enhanced safety, mission suitability economy, and robustness is summarized in this paper. Three vehicle concepts are described: an advanced technology one-and-one-half stage vehicle, a near-term evolved Space Shuttle system closely related to today's Orbiter in concept and appearance, and an Orbiter-Glider which might be appropriate for use with emerging large space launch vehicles.

Davis, Hubert P.↗

NASA NTRS1989

Shuttle evolution for the 1990's

An evolutionary strategy for the Shuttle is presented which aims at achieving reliable low-cost transportation through a process of continuous enhancement and evolution of existing systems. The strategy is based on a methodology which supports the identification and quantitative assessment of potential Shuttle evolutionary paths. Key inputs supporting this methodology include candidate STS enhancements and the definition of long-term goals and requirements. Some of the proposed enhancements are discussed.

Teixeira, Charles↗