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Angkasa: Jurnal Ilmiah Bidang Teknologi
Published by Institut Teknologi Dirgantara Adisutjipto
ISSN : 20859503     EISSN : 25811355     DOI : 10.28989/angkasa
Core Subject : Science,
Computer Science & IT
Arjuna Subject : -
Articles 14 Documents
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Search results for , issue " Vol 8, No 2 (2016): November" : 14 Documents clear
SISTEM PAKAR DIAGNOSA PERMASALAHAN PADA PESAWAT CESSNA GRAND CARAVAN 208B MENGGUNAKAN METODE BACKWARD CHAINING Rianto, Rianto
Angkasa: Jurnal Ilmiah Bidang Teknologi Vol 8, No 2 (2016): November
Publisher : Sekolah Tinggi Teknologi Adisutjipto

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Abstract

Success of an aircraft mechanic is to find a problem and solve it. Analysis of the problems in the Cessna Grand Caravan 208B needed someone expert in the field of aircraft mechanics. In this research expert system is used to provide easily diagnose problems with the Cessna Grand Caravan 208B by adopting the knowledge possessed from a professional mechanic, then take it into the software, that will be called by the expert system. Backward Chaining method used to obtain the results as expected by a professional mechanic. Search tecniques used to supplement the backward chaining method is a Best-First Search technique. Best-First Search Techniques is a search technique to that used to perform a search based on the knowledge gained to conduct a proper solution where it is located.
PENGARUH PENAMBAHAN NIKEL TERHADAP KEKUATAN TARIK DAN KEKERASAN PADA BESI TUANG NODULAR 50 Sudarmanto, Sudarmanto
Angkasa: Jurnal Ilmiah Bidang Teknologi Vol 8, No 2 (2016): November
Publisher : Sekolah Tinggi Teknologi Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (98.955 KB)

Abstract

Nodular cast iron is the cast iron that has nodular graphite spherical structure distributed in ferrite or pearlite matrix or in both of them. Recently, this material is used widely in industries because its low cost and better performance. The advanced metal industries nowadays have found some new technologies in order to improve the properties of materials. One of them is the addition of another elements into the base metals, such as nickel. The effects of the addition 1wt %, 2wt % and 3wt % nickel into nodular cast iron 50 on tensile and hardness properties were investigated in this study. The experimental results show that the best amount of nickel that added into nodular cast iron is 3% wt, which has the best tensile and hardness properties
PERANCANGAN AWAL SCALE MODEL GLIDER STTA-25-02_SAILPLANE Firmansyah, Hendrix Novianto; Junaidin, Buyung; Mauliadi, M. Fatha
Angkasa: Jurnal Ilmiah Bidang Teknologi Vol 8, No 2 (2016): November
Publisher : Sekolah Tinggi Teknologi Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (201.432 KB)

Abstract

The knowledge and experience in aircraft design, especially for glider or sailplane are very important to have. Today, process of designing glider developed so rapidly, especially in America and Europe, one of the significant achievement is the performance aspect of glider. For example, the German-built Eta has a wingspan 30.78 m, aspect ratio 51 and wing loading 50.97 kg/m2, with glide angle of 0.8 degree and 3 km altitude, the glider able to fly 213 km in horizontal direction. Therefore, as the first step to understand the preliminary design of glider, it is important to start with designing a scale model glider STTA-25-02_Sailplane. The goals of this design are to get geometry and configuration of the glider, to obtained stability of glider and to gain performance data that meet with design requirements and objectives data (DR&O). The conclusions from the preliminary design of scale model glider STTA-25-02_Sailplane are the geometry and configuration are good, for example the achivement in performance, the minimum sink rate 0.52 m/s, the glide ratio more than 20 at a cruising speed over 13 m/s, stall speed 11.45 m/s at angle of attack 0 degree. In addition glider STTA-25-02_Sailplane has static and dynamic stability, the static stability condition is indicated by the value of trim angle is positive 1 degree, curve of Cma and Clfi has negative slope, Cnfi curve has positive slope. The dynamic stability condition is indicated by the eigen value for each mode o f movement are negative except on phugoid and spiral mode, eigen value for short period -5.7681 ± 7.0010, phugoid 0.0403 ± 1.1136, rool damping -32.6243, dutch roll -1.0468 ± 3.4891 and spiral 0.1467. Positive eigen value on phugoid and spiral mode can be solved by adding a control parameter of the controlsurfaces.
ANIMASI E-LEARNING PEMBELAJARAN MATEMATIKA DAN FISIKA BAGI SISWA SEKOLAH MENENGAH PERTAMA KELAS 1 Retnowati, Nurcahyani Dewi; Rahmawan, Mahmuda Ghazni
Angkasa: Jurnal Ilmiah Bidang Teknologi Vol 8, No 2 (2016): November
Publisher : Sekolah Tinggi Teknologi Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (165.478 KB)

Abstract

Learning through the use of animation E-Learning can be a learning tool to teach using electronic applications, media, Internet, Intranet or other computer network media. In addition to computers and Internet networks, which play a role in e-learning is the brainware that is creating content (text, images, video, animation) and user/users of e-learning (teachers and students). It should be noted in making animated e-learning is the content that should be included in accordance with the curriculum that is used by the school to be used for teaching and learning in schools. Making animated blueprint of learning by using characters then do modeling and animation. The subjects used in this study animation is Mathematics and Physics. Software used in the manufacture of learning applications that 3ds Max 2010, Adobe Premiere Pro CC, Adobe After Effects. The analysis tested the effectiveness of learning communication using questionnaire and calculation using a Likert scale that shows the percentage of 69.83%, the analysis proves that by using an animated e-learning teaching and learning activities in the classroom more effectively.

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