scholarly journals Research of a High Thrust-to-Weight Ratio Small Turbofan Engine

1997 ◽  
Author(s):  
Masahiro Akagi ◽  
Masashi Shinomiya ◽  
Junichi Sakaki ◽  
Shunji Sugai
Keyword(s):  
Research And Development ◽  
Weight Ratio ◽  
Development Program ◽  
Engine Test ◽  
Test Results ◽  
Design Development ◽  
Turbofan Engine ◽  
Technical Research ◽  
Supersonic Aircraft ◽  
High Thrust

The 3rd Research Center of the Technical Research and Development Institute (TRDI) of Japan Defense Agency (JDA) and Ishikawajima-Harima Heavy Industries Co., Ltd. (IHI) developed and tested the demonstrator of a high thrust-to-weight ratio small turbofan engine with an afterburner called “XF3-400”, the purpose of which is to establish engine technologies for the future supersonic aircraft for JDA. The development program started in 1981 and the first engine test was carried out in 1992. All the engine tests planned completed in March 1995 successfully. This paper reports the design, development and test results of the XF3-400 engine above.

Research on a high thrust-to-weight ratio small turbofan engine

1995 ◽  
Author(s):  
Iwao Kashikawa ◽  
Masahiro Akagi ◽  
Satoshi Yashima ◽  
Masataka Ikeyama
Keyword(s):  
Weight Ratio ◽  
Turbofan Engine ◽  
High Thrust

scholarly journals Pengembangan CD Pembelajaran Matematika Berbantuan Software Geometer’s Sketchpad dengan Pendekatan Kontruktivisme Berbasis Teori Jean Piaget

2020 ◽  
pp. 62-75
Author(s):  
Sutri Theo Lija Sidabutar
Keyword(s):  
Research And Development ◽  
Mathematics Learning ◽  
Student Learning Outcomes ◽  
Geometer's Sketchpad ◽  
Test Results ◽  
Design Development ◽  
Student Activities ◽  
Average Percentage ◽  
Implementation Evaluation ◽  
Learning Mathematics

This study aims to 1) determine the validity of the Mathematics learning CD assisted by Geometer’s Sketchpad Software with Jean Piaget's theory-based Constructivism approach; 2) determine the effectiveness of the Mathematics Learning CD assisted by Geometer’s Sketchpad Software with Jean Piaget's theory-based Constructivism approach. The method used in this research is research and development or research and development (R&D) with the ADDIE development model (Analysis, Design, Development, Implementation, Evaluation). The subject of this research is grade VIII-4 SMP St. Petrus Medan with 32 students. The type of data used is qualitative data and quantitative data. Based on data processing and discussion, the data obtained from the material expert validation results with a percentage of 85.4% are in the category of very valid, while the results of the validation of media experts with an average percentage of 87.3% are in the category of very valid so that the mathematics learning CD is said to be very valid . The effectiveness of mathematics learning CD assisted by geometer's sketchpad software with constructivism approach based on Jean Piaget's Theory can be seen from the following assessments: 1) Positive responses assessed by students with an average percentage of positive responses of 88.88% with a very positive category, and responses teachers with an average percentage of 84% with a positive category; 2) the results of observations of teacher activities in managing learning using CDs learning mathematics with an average percentage of 89.73% with very good categories and the results of observations of student activities with an average percentage of 86.66% with very good categories; 3) the test results of student learning outcomes is obtained classical completeness of 84.37% with a very high category. Based on these assessments it can be concluded that the use of mathematics learning CDs assisted by geometer’s sketchpad software with Jean Piaget's theory-based constructivism approach is valid and effective in the learning process.

scholarly journals Occupied Volume Integrity Testing: Elastic Test Results and Analyses

2011 ◽  
Author(s):  
Michael Carolan ◽  
Michelle Muhlanger ◽  
Benjamin Perlman ◽  
David Tyrell
Keyword(s):  
Research And Development ◽  
Development Program ◽  
Full Scale ◽  
Fe Model ◽  
Test Model ◽  
Test Results ◽  
Load Path ◽  
Passenger Car ◽  
Post Test ◽  
Railroad Safety

The Office of Research and Development of the Federal Railroad Administration (FRA) and the Volpe Center have been conducting research into developing an alternative method of demonstrating the occupied volume integrity (OVI) of passenger rail equipment through a combination of testing and analysis. This research has been performed as a part of FRA Office of Research and Development’s Railroad Safety Research and Development program, which provides technical data to support safety rulemaking and enforcement programs of the FRA Office of Railroad Safety. Previous works have been published on a series of full-scale, quasi-static tests intended to examine the load path through the occupant volume of conventional passenger cars retrofitted with crash energy management (CEM) systems. This paper reports on the most recent testing and analysis results. Before performing any tests of proposed alternative loading techniques, an elastic test of the passenger car under study was conducted. The elastic test served both to aid in validating the finite element (FE) model and to verify the suitability of the test car to further loading. In January, 2011, an 800,000 pound conventional buff strength test was performed on Budd Pioneer 244. This test featured arrays of vertical, lateral, and longitudinal displacement transducers to better distinguish between the deformation modes and rigid body motions of the passenger car. Pre-test car repairs included straightening a dent in one side sill and installing patches over cracks found in the side sills. Additionally, lateral restraints were added to the test frame due to concerns in previous tests associated with lateral shift in the frame. As a part of this testing program, a future test of a passenger car is planned to examine an alternative load path through the occupied volume. In the case of Pioneer 244, this load path places load on the floor and roof energy absorber support structures. Loading the occupant volume in this manner more closely simulates the loading the car would experience during a collision. FE analysis was used in conjunction with full-scale testing in this research effort. An FE model of the Pioneer car was constructed and the 800-kip test was analyzed. The 800-kip test results were then compared to the analysis results and the model was adjusted post-test so that satisfactory agreement was reached between the test and the model. In particular, the boundary conditions at the loading and reaction locations required careful attention to appropriately simulate the support conditions in the test. Because the 800-kip load was applied at the line of draft, this test results in significant bending as well as axial load on the car. To ensure that both the axial and bending behaviors are captured in the model, the key results that were compared between test and model are the longitudinal force-displacement behavior and the vertical deflections at various points along the car. The post-test model exhibited good agreement with the compared test results. The validated model will be used to examine the behavior of the occupant volume when loaded along the alternative load path.

scholarly journals PYLE: Aplikasi E-Commerce menggunakan Sistem Informasi Geografis

2017 ◽  
Vol 6 (1) ◽  
pp. 168
Author(s):  
Putu Agus Darma Santosa . ◽  
Gede Saindra Santyadiputra, S.T., M.Cs . ◽  
I Made Ardwi Pradnyana, S.T., M.T. .
Keyword(s):  
Information Systems ◽  
Geographic Information Systems ◽  
Research And Development ◽  
Geographic Information ◽  
Web Browsers ◽  
Test Results ◽  
Design Development ◽  
Web Browser ◽  
Analysis Design ◽  
Addie Model

Penelitian ini bertujuan untuk menghasilkan rancangan dan mengimplementasikan hasil rancangan aplikasi E-Commerce menggunakan sistem informasi geografis. Pengembangan aplikasi ini bertujuan untuk memudahkan pembeli dalam menemukan produk yang diminati dan lokasi alamat penjual. Metode yang digunakan adalah penelitian dan pengembangan (research and development), untuk mengembangkan aplikasi E-Commerce menggunakan sistem informasi geografis. Model yang digunakan dalam membangun teknologi ini adalah Model ADDIE. Pada model ini memberikan kesempatan untuk melakukan evaluasi dan revisi secara terus menerus dalam setiap fase yang dilalui, sehingga produk yang dihasilkan menjadi produk yang valid. Adapun 5 tahapan dalam model ADDIE ini adalah Analysis (analisis), Design (desain), Development (pengembangan), Implementation (implementasi), dan Evaluation (evaluasi). Hasil akhir dari projek ini adalah berupa aplikasi aplikasi E-Commerce menggunakan sistem informasi geografis yang dapat diakses melalui web browser yang ada pada smartphone android, ios dan pada perangkat laptop atau pc. Aplikasi ini mampu menampilkan map mulai dari pemetaan lokasi produk, direction, hingga navigasi menuju lokasi alamat penjual. Hasil pengujian dari respon pengguna setelah menggunakan aplikasi menyatakan, aplikasi aplikasi E-Commerce menggunakan sistem informasi geografis 89% . Sehingga aplikasi ini layak untuk dikembangkan.Kata Kunci : Web Browser, SIG, E-Commerce,direction, navigasi, Android, IOS. This research aimed at produce a draft and implementing the results of the draft E-Commerce applications using geographic information systems. The development of this application aimed to facilitate buyers to find products in demand and address of the seller. The method used was research and development, to develop E-Commerce applications using geographic information systems. The model used in constructing this technology was ADDIE Model. In this model provided an opportunity to evaluate and revise continuously in every phase passes, so the resulting product becomes a valid product. Five stages in the model were the ADDIE Analysis, Design, Development, Implementation, and Evaluation. The final outcome of this project was E-Commerce applications using geographic information system that can be accessed through web browsers available on smartphones android, ios and to the laptop or pc. This application was able to display map starting from mapping the location of the product, direction, up to the navigation to the location address of the seller. The test results of the user responsed after using the application states, E-Commerce applications using geographic information systems 89%. So this application is deserved to be developed.keyword : Web Browser, SIG, E-Commerce, direction, navigation, Android, IOS.

scholarly journals PENGEMBANGAN ALAT PRAKTIKUM KEPOLARAN DI SMA MUHAMMADIYAH 1 PONTIANAK

2019 ◽  
Vol 7 (1) ◽  
Author(s):  
Surya Wahyudi ◽  
Raudhatul Fadhilah ◽  
Dedeh Kurniasih
Keyword(s):  
Research And Development ◽  
Field Trial ◽  
Success Factors ◽  
Student Response ◽  
Test Results ◽  
Design Development ◽  
Analysis Design ◽  
The Right ◽  
D Model ◽  
Very High

Methods applied in schools have not been able to make students understand the sub-material of polar and nonpolar covalent compounds. One of the success factors of the practicum method is the use of the right practicum tools. Therefore, it is necessary to develop practical tools to make it easier for students to understand the concepts of polar and nonpolar covalent compounds. This study aims to produce a polarity and practicum tool on sub-material polar and nonpolar covalent compounds that are valid, practical, and effective. Validity is measured from the validator's assessment on material aspects and media using a validation sheet. Practicality is measured using teacher and student response questionnaires. Effectiveness is measured by the results of students' Pretest and Postest. This type of research is the development of the ADDIE Research and Development (R & D) model (Analysis, Design, Development, Implementation, and Evaluation). The results of the analysis show that the polarity practicum tool developed from the material and media aspects was stated to be very valid with an average validity value of 0.83 and 0.89, respectively. The practicality test results obtained very practical criteria with a practicality value of 96.64%. The aspect of effectiveness using the N-Gain value in the field trial results obtained N-Gain values of 0.72 with very high criteria. Thus, the polarity practicum tool developed is suitable for use as a sub-material learning media for polar and nonpolar covalent compounds.

scholarly journals PENGEMBANGAN BAHAN AJAR PEMBUATAN SULAMAN TIMBUL PADA MATA KULIAH SULAMAN UNIVERSITAS NEGERI PADANG

2019 ◽  
Vol 8 (1) ◽  
pp. 105
Author(s):  
Ira Syafrina ◽  
Weni Nelmira
Keyword(s):  
Research And Development ◽  
Small Group ◽  
Research Data ◽  
Average Score ◽  
Test Results ◽  
Design Development ◽  
Teaching Materials ◽  
Research Procedure ◽  
Validity Tests ◽  
D Model

AbstrakPenelitian ini dilatar belakangi untuk mengatasi permasalahan mahasiswa dalam perkuliahan Sulaman pada materi membuat sulaman timbul, dimana masih terbatasnya referensi mengenai materi Membuat Sulaman Timbul. Tujuan dari penelitian ini untuk menghasilkan media pembelajaran berupa bahan ajar yang valid dan praktis. Penelitian ini merupakan penelitian Research and Development (R&D). Prosedur penelitian menggunakan model 4-D yang terdiri dari tahap pendefenisian (Define), tahap perancangan (Design), tahap pengembangan (Develop) dan tahap (Disseminate). Namun dalam penelitian ini desseminate tidak digunakan karena mengingat keterbatasan peneliti. Data diperoleh dari uji validitas, uji praktikalitas dosen pembina mata kuliah, uji praktikalitas kelompok kecil dan uji praktikalitas kelompok besar. Validator terdiri atas validasi media dan validasi materi yang berjumlah 4 orang. Berdasarkan hasil uji validitas bahan ajar Sulaman diperoleh skor rata-rata 4,35 dengan kategori sangat valid. Selanjutnya dari hasil uji praktikalitas diperoleh skor 85% dengan kategori sangat praktis. Maka dapat disimpulkan bahwa bahan ajar  ini layak digunakan sebagai media pembelajaran sulaman timbul.  Kata Kunci: bahan, ajar, sulaman, timbul.AbstractThis research aims to solve the problems of students lectures of embroidery on embroidered embroidery material. There are still limited references to the material of Making Embossed Embroideries. The purpose of this study is to produce learning media that contain valid and practical teaching materials. This research is a Research and Development (R & D) research. The research procedure uses a 4-D model consisting of defining (definition), per-design, development design, and development (dissemination). But in this study, it was not used as a consideration for research. Data were obtained from validity tests, practicality tests of lecturer advisors, small group practicality tests and large group practicality tests. The validator consists of media validation and material validation collected by 4 people. Based on the results of the validity test of Sulaman teaching materials obtained an average score of 4.35 with a very valid category. Furthermore, from the practicality test results obtained a score of 85% with a very practical category. It can be concluded that teaching materials are suitable to be used as embroidery learning media arise.Keywords: teaching, materials, embossed, embroideries. 

Status Report of the Turbofan Engine Development Program in Japan

1977 ◽  
Author(s):  
M. Matsuki ◽  
T. Torisaki ◽  
K. Miyazawa ◽  
M. Itoh
Keyword(s):  
Research And Development ◽  
Development Program ◽  
Status Report ◽  
Second Phase ◽  
Turbofan Engine ◽  
Turbofan Engines ◽  
The Status ◽  
Target Performance ◽  
Bypass Ratio ◽  
Engine Development

A National Research and Development Program of high bypass ratio turbofan engines has been in process in Japan since 1971. Target performance characteristics of the first-phase 5-ton thrust class engines have been attained, and development of the second-phase engines has been started in 1976. This paper reviews the status of the program, discusses some engineering progress attained, and presents an outline of the second-phase program and engines.

scholarly journals Visibility of Learning Media of a Culinary-Based Electronic Magazine in Blended Learning

2020 ◽  
Vol 26 (1) ◽  
pp. 35-42
Author(s):  
Anggri Sekar Sari ◽  
Ika Wahyu Kusuma Wati
Keyword(s):  
Research And Development ◽  
Blended Learning ◽  
Small Groups ◽  
Average Score ◽  
Test Results ◽  
Design Development ◽  
Electronic Magazine ◽  
Beta Testing ◽  
D Model ◽  
Very High

This study aims to produce media products that use culinary-based electronic magazines on blended learning. The method used in this study was research and development. The procedure of media development used the Four-D model to produce learning media based on blended learning. The stages of the study consisted of define, design, development, and dissemination. The stages of development used alpha testing for product validation by learning experts, material experts, and media experts. After that the stages of dissemination, beta testing was performed by testing the product on users in small groups. The subjects of this study were students in foodservice expertise. The results of this study showed that the alpha tests on aspects of media and materials and learning both obtained very high criteria. Furthermore, the average score of all aspects was more than 89% with reasonable criteria. while the beta test results indicated high criteria with the average of students’ reached 86%, categorized as feasible.

scholarly journals THE DEVELOPMENT OF KOLB LEARNING STYLE AND 4C's 21ST CENTURY SKILL INTEGRATION E-BOOK IN PEDAGOGY SUBJECT

2020 ◽  
Vol 3 (1) ◽  
pp. 6-9
Author(s):  
Tiara Santika ◽  
Ganefri Ganefri ◽  
Nizwardi Jalinus ◽  
Syahril Syahril ◽  
Fahmi Rizal ◽  
...  
Keyword(s):  
Research And Development ◽  
Learning Style ◽  
21St Century ◽  
Development Research ◽  
Test Results ◽  
Design Development ◽  
Student Centered ◽  
Collaboration And Communication ◽  
Media Learning ◽  
Validation Testing

This research was based on the demands of the 21st century in which teachers should have 4 skills (critical thinking, creativity, collaboration, and communication).  Teachers are required to change the way of teaching that initially (teacher-centered) turns into (student-centered) and able to participate to follow the development of technology. Therefore,  E-book learning is needed that can present material pedagogy integrated with kolb learning and 4C's. This research aims to produce the final product in the form of valid e-book media learning, practical and effective in pedagogy subject. This was a research and development (Research and Development) research. This development research used ADDIE development model consisting of 5 stages which were Analysis, Design, Development, Implementation and Evaluation). Based on the results, e-book validation testing conducted by three validators, it obtained Aiken's score 0.9 with a valid category. The test results practicalities of the teachers and the students were 86% in the practical category. The effectiveness test results was 89.65%. Thus, it can be concluded that this research has produced a pedagogical e-book which is valid, practical and effective.

scholarly journals Pengembangan Lembar Kerja Siswa Eksploratif Berkonteks Budaya Banten pada Mata Pelajaran Matematika di Sekolah Dasar

2019 ◽  
Author(s):  
Hana Lestari ◽  
Aan Subhan Pamungkas ◽  
Trian Pamungkas Alamsyah
Keyword(s):  
Research And Development ◽  
Fifth Grade ◽  
Test Results ◽  
Design Development ◽  
Fifth Grade Students ◽  
The Subject

The purpose of this research to describe the development and feasibility process of the student worksheets based on Bantenese culture, to know the student’s understanding after using student worksheet in the topic of geometry especially volume. This research is the research and development (RnD) using 4-D models (Define, Design, Development, and Dissemination). The subject of this research was the fifth-grade students of SDN Serang 3 consist of 20 students. The data in this study were collected using the questionnaire and test. Based on the results of this research obtained a score with a percentage from content experts 84.16% with very feasible categories, from media experts 85.83% with very feasible categories, 79.99% from linguists expert with feasible categories, 99.33% from user responses with very good categories and 86.75% the test results with very good categories. The results of this research indicate that the product can be interpreted to be effective in increasing students' understanding of the geometry topic, especially volume.

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