Control of intelligent robots in space

In view of space activities like International Space Station, Man-Tended-Free-Flyer (MTFF) and free flying platforms, the development of intelligent robotic systems is gaining increasing importance. The range of applications that have to be performed by robotic systems in space includes e.g., the execution of experiments in space laboratories, the service and maintenance of satellites and flying platforms, the support of automatic production processes or the assembly of large network structures. Some of these tasks will require the development of bi-armed or of multiple robotic systems including functional redundancy. For the development of robotic systems which are able to perform this variety of tasks a hierarchically structured modular concept of automation is required. This concept is characterized by high flexibility as well as by automatic specialization to the particular sequence of tasks that have to be performed. On the other hand it has to be designed such that the human operator can influence or guide the system on different levels of control supervision, and decision. This leads to requirements for the hardware and software concept which permit a range of application of the robotic systems from telemanipulation to autonomous operation. The realization of this goal requires strong efforts in the development of new methods, software and hardware concepts, and the integration into an automation concept

Space propulsion systems. Present performance limits and application and development trends

Typical spaceflight programs and their propulsion requirements as a comparison for possible propulsion systems are summarized. Chemical propulsion systems, solar, nuclear, or even laser propelled rockets with electrical or direct thermal fuel acceleration, nonrockets with air breathing devices and solar cells are considered. The chemical launch vehicles have similar technical characteristics and transportation costs. A possible improvement of payload by using air breathing lower stages is discussed. The electrical energy supply installations which give performance limits of electrical propulsion and the electrostatic ion propulsion systems are described. The development possibilities of thermal, magnetic, and electrostatic rocket engines and the state of development of the nuclear thermal rocket and propulsion concepts are addressed

TCMS operations and maintenance philosophy

The purpose is to describe the basic philosophies of operating and maintaining the Test, Control, and Monitor System (TCMS) equipment. TCMS is a complex and sophisticated checkout system. Operations and maintenance processes developed to support it will be based upon current experience, but will be focused on the specific needs of TCMS in support of Space Station Freedom Program (SSFP) and related activities. An overview of the operations and maintenance goals and philosophies are presented. The assumptions, roles and responsibilities, concepts and interfaces for operation, on-line maintenance, off-line support, and Operations and Maintenance (O&M) personnel training on all TCMS equipment located at KSC are described

Solving Jurisdiction\u27s Social Cost

Federal court subject-matter jurisdiction rules incur a significant social cost—when jurisdiction is found lacking, courts must dismiss, no matter how many years and resources the parties have spent on the case. Indeed, hundreds of belated jurisdictional dismissals occur each year after parties have already engaged in discovery, dispositive motions, or even trial. Federal judges tolerate this waste largely because they view nonwaivable jurisdictional rules as a function of structural values rooted in the Constitution, rather than efficiency concerns. In contrast, scholars tend to focus primarily on efficiency arguments while discussing jurisdictional nonwaivability, de-emphasizing important structural interests. Both theories are overly monistic and fail to consider the full range of jurisdictional values. This Article advances two claims. First, jurisdictional values are pluralistic and multipolar, implicating structural and efficiency interests that are fundamentally incommensurable. We should not simply attempt to maximize a single set of jurisdictional values. And because there is no single unit of measurement for weighing structural values such as “separation of powers” against efficiency interests such as “litigation waste,” we should resist forcing these interests through a cost-benefit analysis. Instead, courts and rule makers should seek equilibrium among all relevant values when fashioning jurisdictional rules. Second, using this equilibration approach, the Article proposes a solution to jurisdiction’s social cost: Courts should resolve all subject-matter jurisdiction questions at the outset of litigation. Federal district courts should affirmatively certify the existence of jurisdiction in every case; after that point, objections to statutory federal jurisdiction would be waived. Moreover, to accommodate both structural and efficiency interests, appellate courts should have discretion to immediately review jurisdictional orders when the benefits of doing so outweigh the costs. Lastly, federal courts should use the threat of sanctions to deter private-party abuse of jurisdictional rules. See also the response by Daniel Klerman, https://digitalcommons.law.uw.edu/wlro/vol89/iss1/1/ \u3eAn Economic Analysis of Subject Matter Jurisdiction Waiver and Dustin Buehler\u27s rejoinder, https://digitalcommons.law.uw.edu/wlro/vol90/iss1/1/ \u3eRevisiting Solving Jurisdiction\u27s Social Cost

President\u27s Page...The State of Delta Sigma Rho and the Fourth Congress

Introduction to volume 31, issue 3 of The Gavel of Delta Sigma Rho, by E.C. Buehler on the state of Delta Sigma Rho and the upcoming Fourth Delta Sigma Rho Congress