scholarly journals Studi tentang pengaruh perbedaan daya mesin terhadap kecepatan dan konsumsi bahan bakar minyak pada perahu pakura (Study of the effect of engine power difference on speed and fuel consumption of pakura boats)

2017 ◽  
Vol 2 (5) ◽  
Author(s):  
Stefanny S. Tumigolung ◽  
Fransisco P.T. Pangalila ◽  
Frangky E. Kaparang
Keyword(s):  
Experimental Method ◽  
Fuel Consumption ◽  
Primary Data ◽  
Target System ◽  
Fishing Gear ◽  
Microsoft Excel ◽  
Fishing Boat ◽  
Power Difference ◽  
Average Consumption ◽  
Engine Power

The fishing boat fleet, seeking for a kind of fishing gear. One of the most common fishing boat types in Bitung Oceanic Fishing Port is pambut (Pumpboat). The researcher is concerned about the effect of engine power difference on speed and fuel consumption of pakura boats. The objective of the research is to determine the speeds of boat in the operation and to determine the average consumption of fuel of engine by in different horse power.  The method used in this research is the experimental method. The primary data is stored at the same time as the observations performed by the target system. The effect of engine throttle opening with the speed and fuel consumption is analyzed by a regression that uses Microsoft excel. The relation data is denoted in interpretation with table, grafic and a form of a sentence.  In conlusion, the best speed of the 6.5 HP is 7.57 knots while the 9 HP powered are 8,96 knots. The best fuel consumption of engine that powered 6.5 HP is averaged 2.87 l/hr while the engine powered 9 HP an average of 4.40 l/hr.Keywords: pakura, speed, fuel AbstrakArmada penangkap ikan, mengusahakan berbagai macam jenis alat tangkap ikan. Salah satu jenis kapal penangkap ikan yang umum terdapat di Pelabuhan Perikanan Samudera Bitung yaitu pambut (Pumpboat). Peneliti merasa  perlu dilakukan penelitian tentang Studi tentang pengaruh perbedaan daya mesin terhadap kecepatan dan konsumsi bahan bakar minyak pada perahu pakura. Adapun tujuan penelitian adalah untuk menentukan kecepatan terbaik  perahu pakura dalam operasi penangkapan ikan dengan daya mesin yang berbeda dan menentukan rata-rata konsumsi bahanbakar yang dibutuhkan perahu pakura dalam melakukan operasi penangkapan ikan dengan daya mesin yang berbeda.  Data primer yaitu data yang diambil langsung pada saat pengamatan yang dilakukan dengan cara target system. Hubungan bukaan gas dengan kecepatan dan konsumsi bahan bakar minyak (BBM) akan dianalisa dengan analisa regresi yang menggunakan Microsoft excel. Data hubungan tersebut digambarkan dalam bentuk tabel dan grafik yang di interpretasi dalam bentuk kalimat.  Kecepatan yang terbaik pada mesin yang berdaya 6,5 HP adalah 7,57 knot sedangkan pada mesin yang berdaya 9 HP adalah 8, 96 knot. Konsumsi BBM  yang terbaik pada mesin yang berdaya 6,5 HP adalah rata-rata  2,87 l/jam sedangkan pada mesin yang berdaya 9 HP rata-rata 4,40  l/jam.Kata kunci : pakura, kecepatan, bahan bakar

Quasi-Periodic Control Technique for Minimizing Fuel Consumption During Record Vehicle Competition

2013 ◽  
Vol 60 (2) ◽  
pp. 185-197 ◽  
Author(s):  
Paweł Sulikowski ◽  
Ryszard Maronski
Keyword(s):  
Fuel Consumption ◽  
Optimal Control Theory ◽  
Slope Angle ◽  
Control Technique ◽  
Decision Variables ◽  
Aeronautical Engineering ◽  
The One ◽  
Optimal Driving ◽  
The Given ◽  
Engine Power

The problem of the optimal driving technique during the fuel economy competition is reconsidered. The vehicle is regarded as a particle moving on a trace with a variable slope angle. The fuel consumption is minimized as the vehicle covers the given distance in a given time. It is assumed that the run consists of two recurrent phases: acceleration with a full available engine power and coasting down with the engine turned off. The most fuel-efficient technique for shifting gears during acceleration is found. The decision variables are: the vehicle velocities at which the gears should be shifted, on the one hand, and the vehicle velocities when the engine should be turned on and off, on the other hand. For the data of students’ vehicle representing the Faculty of Power and Aeronautical Engineering it has been found that such driving strategy is more effective in comparison with a constant speed strategy with the engine partly throttled, as well as a strategy resulting from optimal control theory when the engine is still active.

scholarly journals Skidders Fuel Consumption in Two Different Working Regions and Types of Forest Management

Forests ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 547
Author(s):  
Hrvoje Kopseak ◽  
Marijan Šušnjar ◽  
Marin Bačić ◽  
Mario Šporčić ◽  
Zdravko Pandur
Keyword(s):  
Forest Management ◽  
Fuel Consumption ◽  
Significant Difference ◽  
Average Consumption

For the needs of fuel consumption analysis, a database for a period of 2 years was created for three types of skidders operating in two different management methods—even-aged and selective forests. A total of 436 skidders were processed in the database, of which 255 skidders worked in even-aged forests and 181 skidders worked in selective forests. The average consumption of skidders in even-aged forests ranged from 1.38 to 1.65 L/m3 or from 7.81 to 9.34 L/PMH, while in selective forests, the average consumption ranged from 1.06 to 1.34 L/m3 or from 6.49 to 7.10 L/PMH. The obtained results indicate higher fuel consumption for all three types of skidders in regular forest management. There is no statistically significant difference in fuel consumption between the studied skidders. Comparing fuel consumption in L/PMH, we notice that there was an increase in fuel consumption in relation to the age of the skidder.

scholarly journals Virtual Reality As A Spatial Experience For Architecture Design: A Study of Effectiveness for Architecture Students

2018 ◽  
Vol 41 ◽  
pp. 05005
Author(s):  
Luhur Sapto Pamungkas ◽  
Cinthyaningtyas Meytasari ◽  
Hendro Trieddiantoro
Keyword(s):  
Virtual Reality ◽  
Experimental Method ◽  
Architectural Design ◽  
Design Thinking ◽  
Three Dimensional ◽  
Visual Design ◽  
Primary Data ◽  
Design Studio ◽  
Spatial Experience ◽  
Architectural Design Studio

Studios. This ability gained through visual design thinking. The spatial experience honed by three dimensional thinking from the medium diversity. The spatial experience learned through a room layout, proportion, and composition. This research used an experimental method and the primary data obtained by a “Likert” scale questionnaire. The Respondents are 50 students of the Architectural Design Studio. Moreover, the analysis focuses on the VR for spatial experience. The result was a descriptive explanation of the effectiveness of Virtual Reality for a spatial experience of architecture students at Technology University of Yogyakarta.

scholarly journals SOSIAL EKONOMI DAN LINGKUNGAN PERIKANAN BUBU DI DESA KARANGSONG KABUPATEN INDRAMAYU, JAWA BARAT

2019 ◽  
Vol 8 (2) ◽  
Author(s):  
Muhammad Fitri Rizky ◽  
Zuzy Anna ◽  
Achmad Rizal ◽  
Asep Agus Handaka Suryana
Keyword(s):  
Environmental Analysis ◽  
Financial Analysis ◽  
Primary Data ◽  
Social Aspect ◽  
Fishing Gear ◽  
Environmental Condition ◽  
West Java ◽  
Environment Analysis ◽  
Average Value ◽  
Trap Fishery

Penelitian ini bertujuan untuk menganalisis kondisi sosial, ekonomi dan lingkungan perikanan bubu dan mencari tahu faktor apa yang berpengaruh terhadap kondisi sosial ekonomi dan lingkungan perikanan bubu. Penelitian dilaksanakan di Desa Karangsong, Kabupaten Indramayu, Provinsi Jawa Barat pada bulan Februari tahun 2018 dengan jumlah responden sebanyak 60 orang nelayan alat tangkap bubu. Pengambilan data dilakukan melalui wawancara dengan kuesioner untuk mendapatkan data primer mengenai kondisi perikanan bubu. Analisis sosial meliputi aspek sosio demografi, institusional dan konflik. Analisis finansial meliputi analisis pendapatan dan B/C ratio serta dilakukan analisis regresi untuk mengetahui hubungan antara beberapa variabel input. Analisis lingkungan dilakukan berdasarkan pandangan nelayan mengenai dampak pengoperasian bubu terhadap lingkungan. Aspek sosial menunjukkan nelayan bubu Karangsong tidak memiliki kelompok, ditemukan konflik alat tangkap dan konflik terkait kegiatan perikanan dan hasil tangkapan yang tidak dilaporkan aktifitasnya ke TPI maupn PPI. Hasil analisis finansial didapatkan pendapatan nelayan berkisar antara Rp1.532.000 - Rp5.401.600 dan nilai B/C Ratio rata rata per jenis kapal adalah 2.05 untuk 3 GT, 5.1 untuk 4 GT dan 5.6 untuk 6 GT. Hasil analisis lingkungan diketahui 100% nelayan memiliki perspektif bahwa perikanan bubu ramah lingkungan.Title: Socio-Economic and Environment Analysis of Trap Fishery  Will Karangsong Village Indramayu of West Java This research was conducted in Karangsong, Indramayu, West Java in February 2018 with 60 respondents of traps fishermen. This research aims to analyze the socio-economic and environmental condition of fishing traps and tried to find out what factors influencing the conditions. Primary data were collected through questionnaires and interviews about the condition of fishing traps. Social analysis of the research includes demography, institution and conflict, while financial analysis includes income analysis and B/C ratio as well as regression analysis to find out correlation between inputs. Environmental analysis was built upon fishermen’s perspective about how fishing traps affect the environment. Social aspect of the research found that fishermen did not have any group, and there are many conflicts especially related to fishing gear and unreported fishing. Results in financial analysis found that fishermen’s income  range between IDR 1.532.000 - IDR 5.401.600 and average value of B/C Ratio for 3 GTs, 4 GTs and 6 GTs were 2.05, 5.1 and 5.6, respectively. Environmental analysis indicated that 100% of fishermen perceive that fishing traps are environmentally friendly. 

scholarly journals Eel (Anguilla spp.) fishing activity in Poso Area Central Sulawesi, Indonesia

2021 ◽  
Vol 869 (1) ◽  
pp. 012022
Author(s):  
L Lukman ◽  
T Triyanto ◽  
G S Haryani ◽  
O Samir ◽  
L Gogali ◽  
...  
Keyword(s):  
Secondary Data ◽  
Downstream Migration ◽  
Primary Data ◽  
Shallow Waters ◽  
Fishing Gear ◽  
Fishing Activity ◽  
Central Sulawesi

Abstract Poso in Sulawesi, primarily the Lake Poso and Poso River, is known as eel (Anguilla spp.) fishing areas. Therefore, research of eel fishing is required as base information for evaluating and determining policies for its activities. The eel fishing research in the Poso area was conducted through primary data observations, secondary data traces, and interviews from April to June 2021. The fishing activities take place in the Lake Poso and Poso River shore and the rivers of the lake inlets. The fishing gear that contributed greatly to the catch was fence traps and spears. The local community’s fence trap called waya is a unique gear only found in this area, and it is installed in Poso River around the lake outlets. The gears block the rivers to catch downstream migration eels. The spear is fishing gear (including for eels) operated at night in shallow waters, especially in the outlets of Lake Poso. The eel production recorded from the Poso areas for the last four years has been 6.7–15.5 tons per year, and the highest production was in Pamona Puselemba.

scholarly journals Studi pengaruh perbedaan warna umpan buatan pancing gurita terhadap hasil tangkapan

2019 ◽  
Vol 4 (2) ◽  
pp. 69
Author(s):  
Kholid Kurniawan ◽  
Lefrand Manoppo ◽  
Fanny Silooy ◽  
Alfret Luasunaung ◽  
Meta Sonya Sompie
Keyword(s):  
Coral Reef ◽  
Experimental Method ◽  
T Test ◽  
Fishing Gear ◽  
Fishery Resources ◽  
Large Potential ◽  
Color Differences

The western part of North Minahasa waters is mainly covers by coral reef with relatively large potential of fishery resources including Octopus.  Fishermen of Budo village catches the Octopus by fishing gear known as sihoru or gara – gara boboca in local name with classified as trowling.  The goals of this study are to analyze the influence of using different colors of typical bait released to fishing catch and to identity the catches species.  Experimental method and T-Test wore using to analyze the data.  The result indicated that the color differences not influence to the number of catches, which the analysis probability of brown and black colors is 0.6041, the brown and red is 0.4762, the black and red is 0.8455 which all of these numbers or higher than α0.05 = 2.2281.  Based on this identification, Octopus cyanea is mainly catches.ABSTRAK        Perairan Minahasa Utara bagian Barat pada umumnya merupakan hamparan batu karang yang memiliki potensi sumber daya perikanan yang relatif melimpah salah satunya adalah gurita (Octopus).  Dalam memanfaatkan sumber daya ini masyarakat nelayan Desa Budo menangkap gurita menggunakan alat tangkap pancing yang disebut sihoru atau gara–gara boboca, alat tangkap ini adalah alat tangkap pancing jenis tonda. Tujuan dalam penelitian ini adalah menganalisis pengaruh penggunaan warna umpan terhadap jumlah hasil Tangkapan dan mengetahui spesies octopus hasil tangkapan.  Metode yang digunakan dalam penelitan adalah eksperimental dan dianalisis menggunakan metode statistik Uji T.  Dari penelitian ini diperoleh hasil  nilai analisis P coklat hitam dan sebesar 0.6041, coklat dan merah sebesar 0.4762, hitam dan merah sebesar 0.8455 yang semua nilainya berada diatas α0.05 = 2.2281 dan dapat disimpulkan bahwa perlakuan warna umpan tidak berpengaruh terhadap hasil tangkapan.  Berdasarkan hasil identifikasi gurita yang tertangkap adalah Octopus cyanea.

scholarly journals ANALISIS ASPEK TEKNIS KAPAL PUKAT CINCIN (PURSE SEINE) DAN ALAT TANGKAP YANG DIGUNAKAN NELAYAN DI PERAIRAN TELUK BONE

2020 ◽  
Vol 3 (2) ◽  
pp. 226-238
Author(s):  
Hawati Hawati ◽  
Angkasa Putra
Keyword(s):  
Survey Methods ◽  
Secondary Data ◽  
Purse Seine ◽  
Primary Data ◽  
Fishing Gear ◽  
Technical Aspects ◽  
Fish Resources ◽  
Trawl Fishing ◽  
Fisheries Regulation ◽  
Fishing Area

The utilization of fish resources by fishermen in the waters of Bone Bay uses different fishing gear and patterns as well as different utilization and management policies. This can affect the sustainability of existing fish resources, one of which is in the Bone Regency area. This study aims to analyze the technical aspects of purse seine and fishing gear used by fishermen in the waters of Bone Bay, especially in Bone Regency. Furthermore, the technical aspects of the vessel and fishing gear as a result of the calculation are compared with the provisions stipulated in the PERMEN-KP Number 71 of 2016 to determine the zone of the fishing area. This research was conducted in Panyula Village, which is the fishing base area of purse seine fishermen and the waters of Teluk Bone, starting from November 2016 to March 2017. This research uses a combination of survey methods and case studies. The type of data used consists of primary data and secondary data. Based on the technical aspects of purse seine vessels, ring trawl fishing gear and FAD fishing tools, purse seine units should be operated on Fishing Route II and Fishing Route III in accordance with Minister of Marine Affairs and Fisheries Regulation Number 71 of 2016.

scholarly journals PENDEKATAN BIONOMI PADA PELUANG PENGEMBANGAN PERIKANAN TANGKAP DI KABUPATEN KEPULAUAN TALAUD

2012 ◽  
Vol 1 (2) ◽  
pp. 57
Author(s):  
Jeti Pulu ◽  
Mulyono S. Baskoro ◽  
Daniel R. Monintja ◽  
Budhi H. Iskandar ◽  
Akhmad Fauzi
Keyword(s):  
Open Access ◽  
Economic Value ◽  
Secondary Data ◽  
Primary Data ◽  
Fishing Gear ◽  
Fish Production ◽  
Resource Rent ◽  
Illegal Fishing ◽  
Fishing Gears ◽  
Catch Composition

The research is aimed to reveal opportunity development of the capture fisheries in Talaud Islands Regency by using bionomy approach with Gordon-Schaefer model (Fauzy, 2005) con-cerning the dominant of illegal fishing activities around the area. The research was started by co-llected some secondary data on fish production and number of fishing units. Primary data were collected on catch composition and types of fishing gear. Gordon-Schaefer methods was applied to evaluate the tuna and skipjack resources in the area. The troll and pole and line are indicated as the dominant fishing gears used to catch the skipjack and tuna. In case of open access condition, the production will end up to 25,09 tons, while the resource rent will be end up to zero. For the development, simulations were exercised in 3 scenarios: 1) scenario of enhancing domestic fleet, 2) scenario of illegal fishing, and 3) scenario of net surplus. With those scenarios, if the illegal fishing could be eliminated, the capture fisheries in this regency could render economic value to 10 billion rupiah.

scholarly journals Rancang Bangun dan Pengujian Penghalang Heliks sebagai Pencampur Udara-Biogas pada Motor Otto

2021 ◽  
Vol 8 (3) ◽  
pp. 89-96
Author(s):  
Herbert Hasudungan Siahaan ◽  
Armansyah H Tambunan ◽  
Desrial ◽  
Soni Solistia Wirawan
Keyword(s):  
Fuel Consumption ◽  
Performance Test ◽  
Engine Performance ◽  
Fuel Mixture ◽  
Specific Fuel Consumption ◽  
Combustion Reaction ◽  
Otto Cycle ◽  
Direct Use ◽  
Engine Power

A helical barrier as air-biogas mixing device was designed and tested for direct use of biogas from digester in otto cycle generator set. Homogeneity of the air-fuel mixture can give better combustion reaction and increase engine power. The design was based on simulation, which shows that a 0.039 m length of helical barrier gave a 5% increase in power compared to non-helical barrier. Likewise, the simulations also showed that the helical barrier reduced specific fuel consumption (SFC) by 8%. Accordingly, the mixer with helical barrier was designed, and fabricated. Its performance test confirms the improvement resulted by using helical barriers as air-biogas mixer in the engine. The experiment showed that the power increased by 5% when using helical barrier, while SFC decreased by 4.5%. It is concluded that the helical barrier can increase the homogeneity of the mixture resulting in better engine performance. Besides, emissions produced from the engine using a helical barrier also decreased.

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