Engineering topics
Publications and source records attributed to Schalkowsky, S..
The formulation of planetary quarantine requirements, and their implementation as determined by a risk allocation model, is discussed. The model defines control safety margins with particular emphasis on utility in achieving the desired minimization of excessive margins, and their effect on implementation procedures.
The attempt is made to investigate quarantine constraints, and alternatives for meeting them, in sufficient detail for identifying those courses of action which compromise neither the quarantine nor the space mission objectives. Mathematical models pertinent to this goal are formulated at three distinct levels. The first level of mission constraint models pertains to the quarantine goals considered necessary by the international scientific community. The principal emphasis of modeling at this level is to quantify international considerations and to produce well-defined mission constraints. Such constraints must be translated into explicit implementation requirements by the operational agency of the launching nation. This produces the second level of implementation system modeling. However, because of the multitude of factors entering into the implementation models, it is convenient to consider these factors at the third level of implementation parameter models. These models are intentionally limited to the inclusion of only those factors which can be quantified realistically, either now or in the near future.
Estimation of microbial release probabilities from Martian lander
Potential effects of recent findings on spacecraft sterilization requirements
Spacecraft sterilization requirements, evaluating viable organisms release probability from spacecraft as function of equipment fracturing
Analytical model for microbial population survival times during heat sterilization studied for spacecraft applications, considering environment and exposure time
Synthesis and design of on-line self-organizing control of multiple goal, multiple actuator systems
Analytical techniques and calculations in planetary quarantine and spacecraft sterilization
Estimates of planetary contamination probabilities due to flight of Venus 3
Analysis of planetary quarantine requirements
Numerical analysis of current spacecraft sterilization standards
Special problems in spacecraft sterilization
Radiation pressure errors when using knudsen pressure gauge for measurement of low gas pressures