¶ … Transient Vibrations and Shock Loads in Spacecraft Components Increasing performance, as well as the goals of reducing costs, have been the major factors affecting the design of the present and future spacecraft launching system. However, the level of vibration is currently affecting the design process, and launch phase, which may lead to a satellite failure. While it is possible to design the spacecraft to withstand the loads, it is still critical to add a substantial mass to the loads in order to enhance their launching survivability for the satellite operations. However, this option increases the costs of operations as well as reducing the mass margin needed to launch the additional payload. Moreover, on-orbit vibrations can induce spacecraft disturbances leading to negative effects on sensitive payloads' performances. (Denoyer, & Johnson, 2001). Space manipulators have also been identified as the complex systems composing of robotic arms and accommodating the orbiting platform. The space manipulators are effective tools in performing various tasks such as launching satellites, for repairing and maintenance. However, it involves a significant amount of structural vibrations to achieve the launching requirements. Thus, the forces, gravity gradient, orbital perturbations, and second order perturbation can affect the load vibrations. Denoyer, et al. (2001) argue the vibrations of the space aircraft can have an effect on the space missions. Thus, it is very critical to use the "Softride whole-spacecraft vibration...
2001 p 11). The spacecraft major structural components and dynamic systems can also have an effect on the payloads and the entire systems. The unpredicted changes can have an effect on the launching control systems thereby causing instability and loss of mission. Sabatini et al. (2011) also support the argument by pointing out that loads and vibrations can lead to problems of interaction between the flexible dynamics and control torques in a space manipulator since the dynamic of the space manipulators can be complex. To address the problem, the load analysis has been identified as the effective strategy to establish the load design as well as load testing to evaluate the vibration of the spacecraft.
Null Hypothesis and an Alternate Hypothesis Hypothesizing in business assists leadership in deciding which avenue to take for the overall health of the organization. This is done by allowing the business managers to make decisions after having full research. Business leaders have had to employ hypothesizing to facilitate the implementation of right decisions in their lines of duty. This is an important process because organizations are made or destroyed by the
If they can bench-press heavy weights, they may emphasize athletics at the expense of academics, in terms of how they prioritize their time. However, it is equally possible that in some schools, high-achieving students also use athletics as a way of bolstering their college resume. Factors such as the school, the degree to which athletics makes demands upon student athletes within the particular environment, and the intelligence of the
CUNE graduate students as intelligent, not as intelligent or more intelligent than graduate students at ABC University? What is the sample for this study? Cune grad students and ABC grad students What is the independent variable? (Think about this one carefully!) Education What are the two levels of the independent variable? 1st level -- Cune; 2nd level -- ABC What is the dependent variable? Intelligence How could the DV be measured? Test scores What is
Treatment of Data and Hypothesis in Research During the research, there was data that was collected and having been plotted on the histogram and the appropriate scatter plots, the obtained results gave a descriptive portrayal of the finding from the variables. The histogram and the scatter plot gave the pictorial correlation between the time spent and the frequency of the attendance of the gym session with the audio and visual aids
Run a chi-square test for goodness of fit on the variable "Year," testing whether there are equal numbers of STA 250 students in all the represented class years. Copy and paste your output to a Word document and type your answers to the following questions below: Chi-Square Test Frequencies Observed N Expected N Residual Freshman Sophomore Junior Senior Total Test Statistics Chi-Square df Asymp. Sig. 0 cells (0.0%) have expected frequencies less than 5. The minimum expected cell frequency is 13.8. How many students would we
carcinoid is no longer rare as previously deemed, but rather is accidentally missed or not analyzed in the course of removing the appendix, this has a major prevalence than most current proportion of reported diagnoses. Carcinoid tumors are relatively unusual, malignant tumors, typically of the digestive track and/or lung. They grow and develop slowly and as a result have a very minimal probability of disseminating across the body. Remarkably, these
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