scholarly journals Design System Analysis of Water Quality Survey Using Macro Benthos Indicator with Biotic Family Index Approach

Author(s):  
Teguh Prasandy ◽  
dina Fitria Murad ◽  
Titan ◽  
Agus Putranto
Author(s):  
Aaron R. Byerley ◽  
Kurt P. Rouser ◽  
Devin O. O’Dowd

The purpose of this paper is to explore GasTurb 12, a commercial gas turbine engine performance simulation program, for supplementary use on an introductory propulsion design project in an undergraduate course. This paper will describe several possible opportunities for supplementing AEDsys (Aircraft Engine Design System Analysis) version 4.012, the engine design software tool currently in use. The project is assigned to juniors taking their first propulsion course in the aeronautical engineering major at the USAF Academy. This course, Aeronautical Engineering 361, which focuses on cycle analysis and selection, is required of all aero majors and is used to satisfy the ABET Program Criterion requiring knowledge of propulsion fundamentals. This paper describes the most recent design project that required the students to re-engine the USAF T-38 with the aim of competing for the Advanced Pilot Training Program (T-X) program. The goal of the T-X program is to replace the T-38 aircraft that entered service in 1961 with an aircraft capable of sustained high-G operations that is also more fuel efficient. The design project required the students to select an engine-cycle for a single, non-afterburning, mixed stream, low bypass turbofan engine to replace the two J85 turbojets currently in the T-38. It was anticipated that the high specific thrust requirements might possibly be met through the use of modern component measures of merit to include a much higher turbine inlet temperature. Additionally, it was anticipated that the required 10% reduction in thrust specific fuel consumption might possibly be achieved by using a turbofan engine cycle with a higher overall pressure ratio. This paper will describe the use of GasTurb 12 to perform the same design analysis that was described above using AEDsys as well as additional features such as numerical optimization, temperature-entropy diagrams, and the generation of scaled, two-dimensional engine geometry drawings. The paper will illustrate how GasTurb 12 offers important supplementary information that will deepen student understanding of engine cycle design and analysis.


Author(s):  
Devin O. O’Dowd ◽  
Aaron R. Byerley

This paper presents a practical approach to designing a gas turbine nozzle with the help of the Aircraft Engine Design textbook as well as the software program Nozzle, a subprogram within the Aircraft Engine Design System Analysis Software suite AEDsys. The current textbook and software allow for a variable wetted length of the converging and diverging nozzle sections. Critical feedback from industry experts has inspired an attempt to design a nozzle with fixed wetted material lengths. This paper is written to augment classroom treatment, but will also support others who use the Aircraft Engine Design text and software for a preliminary engine design capstone. This approach is further guided by the actual scaling of the Pratt & Whitney F100 variable geometry converging-diverging nozzle, where wetted lengths are fixed. The chief goal is to equip students at the United States Air Force Academy with a refined approach that is more realistic of a manufactured nozzle design, producing a graphical representation of a nozzle schedule at different speed and altitude flight conditions, both with and without afterburner.


Author(s):  
Muhammad Rizqi Ghozhali

The practice of brokering is one of the concerns felt by the community at immigration services. The Directorate General of Immigration immediately followed up on the report, and appealed to all technical units of immigration to eradicate brokering practices and the practice of extortion (illegal levies) on immigration services. In line with this appeal, the Directorate General of Immigration made an online application called APAPO. Kantor Imigrasi Kelas II Non-TPI Kediri in follow-up to the practice of extortion and brokering also built the Flip Barrier Gate system. This system utilizes the use of RFID (Radio Frequent Identification) technology embedded in the access card. However, over time, this system began to find some problems. Among the obstacles that have arisen are the inactivity of this system because it is feared that it will become the center of the spread of COVID-19 due to the alternating use of access cards. In this research, development planning is carried out for the Flip Barrier Gate Class II Non-TPI Kediri Immigration Office. Flip Barrier Gate is integrated with APAPO through the use of QR code booking code as an access reader. In development planning, this study uses the system development theory described by Tata Sutabri. This phase consists of 5 stages, namely, system investigation, system analysis, system design, system implementation, system maintenance.


2015 ◽  
Vol 9 (1) ◽  
pp. 150-156 ◽  
Author(s):  
Chuang Lu ◽  
Bo Wang ◽  
Xiu-Yuan Peng ◽  
Xiao-Lei Hou ◽  
Bing Bai ◽  
...  

Management plan model of agricultural planting information technology research and application of design system for agricultural production and digital has important theoretical and practical significance of agricultural planting. The study concluded, extracted the relevant agricultural planting design theory and technology research based on the show, applying the system analysis principle and mathematical modeling technique, the construction and perfection of the cropping system, ecological regionalization, precision farming and productivity of quantitative analysis of the agricultural planting management knowledge model, by using the technology of software component, with GIS as spatial information management platform, the establishment of the digital system design based on GIS and model plant. The system has realized the design of cropping system of regional cropping information standardization management and different levels of for the realization of crop planting design, quantitative and digital laid the foundation.


2021 ◽  
Vol 10 (1) ◽  
pp. 1
Author(s):  
Bintara Putra Candra Bareta ◽  
Alex Harijanto ◽  
Maryani Maryani

Water quality in the process of ornamental fish cultivation plays an important role in creating an environment of life that is in accordance with the needs of ornamental fish. Acidity (pH) and water temperature are one of the important factors of ornamental fish growth. The purpose of this study is to describe how the design system builds arduino-based humidity and pH temperature measuring instruments. Review the validity of moisture temperature and water pH. Monitor the humidity temperature and pH of ornamental fish aquarium water to know the results of the same data with liturgy. This research is a research and development research, conducted in the Laboratory of Physics Education Study FKIP Jember University. The research time was carried out for four months. The samples used in this study were ornamental carp. Based on the analysis of data obtained, it can be concluded that, (1) The work of pH, temperature, and spouting systems based on Arduino Uno is made with sen0161-V2, DS18B20 and DHT-11 sensors and data appearance media namely LCD. (2) Rakaian system is then calibrated to state that the system can be used properly. Calibration includes Arduino-based pH, temperature and Humidity sensor calibration as well as LCD testing. (3) The data that has been found by the researcher and the data in the literature has a match.   Keywords: water quality, Acidity (pH), water temperature, arduino-based.


1970 ◽  
Vol 13 (4) ◽  
pp. 0430-0432
Author(s):  
T. L. Coulthard and J. R. Stein

2000 ◽  
Vol 134 (1-2) ◽  
pp. 15-21 ◽  
Author(s):  
V. Simeonov ◽  
S. Stefanov ◽  
S. Tsakovski

Sign in / Sign up

Export Citation Format

Share Document