Small to Medium UAVs for Civilian Applications in Indonesia

Pranoto, Fuad Surastyo; Budiyanta, Ari Sugeng; SetyoPrabowo, Gunawan

doi:10.5772/intechopen.76426

Cited by 3 publications

(3 citation statements)

References 2 publications

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“…This research takes a case study of the STG & Coal Boiler project which has a cost overrun or CPI < 1, the EPC project [18] has completed the implementation of construction work, mechanical completion, commissioning, performance test and plant acceptance or handover to the client. According to Roscoe [9], the sample size feasible in the study was between 30 and 500.…”

Section: Population and Samplesmentioning

confidence: 99%

Analysis of The Effect of Fabrication and Installation Work on Cost Overruns in Steam Turbine Generator Projects and Coal Boilers in Palembang

Rajagukguk¹,

Yallbert²

2022

ijmsit

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Delays (time overruns, SPI < 1) and exceeding budget costs (cost overruns, CPI < 1) on EPC (Engineering, Procurement, Construction) Projects are a global phenomenon due to the very diverse and unique nature of construction projects so that many companies experience losses during construction execution work activities. A very critical job in the execution of EPC projects is fabrication and installation activities which are part of construction activities because there are very many variables that have an impact on cost overruns if the fabrication and installation work is not monitored and controlled properly. In this study, an analysis of the effect of fabrication and installation work on cost overruns was carried out on the Steam Turbine Generator and Coal Boiler Project in Palembang. The analysis was performed using SPSS Ver software. 25 by processing questionnaire data from the answers of 42 respondents. With good control and early anticipation of construction activities so that it can help project managers in managing projects more effectively and efficiently so that the SPI (Schedule Performance Index) and CPI (Cost Performance Index) are more than one and the achievement of other requirements in accordance with project specifications and contracts.

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Section: Population and Samplesmentioning

confidence: 99%

Analysis of The Effect of Fabrication and Installation Work on Cost Overruns in Steam Turbine Generator Projects and Coal Boilers in Palembang

Rajagukguk¹,

Yallbert²

2022

ijmsit

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“…Indirectly, air temperature also plays a role in the formation of secondary pollutants because solar radiation and air temperature have an interrelated correlation, air temperature can affect the increase in chemical reactions in the atmosphere and result in the formation of fine particulates naturally [11]. Humid air will help the process of deposition of pollutants because, with the humid condition in the air, some pollutants in the form of particles will bind to the water in the air and form larger particles so that they easily settle to the earth's surface by the earth's gravity [12].…”

Section: Study Literaturementioning

confidence: 99%

Air Quality of a Parking Building in Makassar (A Case Study of Bosowa Tower Parking Building)

Kulle

Hamzah

Mulyadi

2021

EPI-IJE

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This study aims to determine the level of air quality in the parking building based on the pollution content in it (CO, CO2, HCHO and, VOC), to analyze the effect of the weather, intensity of motorized vehicle traffic, and surface elevation to the air quality. The dependent variable is the level of air pollution. The research sample is the Makassar Bosowa Tower Parking Building, data collection was carried out by direct measurement and observation in 12 days from November 24th till December 17th. The research was done using the comparative method, The data processed using the Mann-Whitney difference test, and the Spearman correlation test using SPSS application. The results showed that the average CO levels had exceeded the limit of good air quality, the average of CO2 levels was still within the limits for good air quality, and the average of HCHO and VOC levels were mostly within the limits for good indoor air quality, according to The Indonesia Minister of Health Regulation Number 1077 in 2011. The result of measurements and tests shows that the changes in the weather do not have a significant effect on the air quality. The amount and the intensity of motorized vehicle traffic affect the air quality, especially during rainy weather.

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“…LAPAN (now BRIN) has several types of unmanned aerial vehicles, which are referred to as LAPAN surveillance UAV (LSU). The LSUs can be utilized for many applications, such as aerial photography for agriculture, mapping, and disaster management, as well as for maritime surveillance [1]- [3]. For the use of disaster management, for example, LSUs have the ability to take pictures of volcanoes.…”

Section: Introductionmentioning

confidence: 99%

Design and Testing of a Bungee Cord Based Launcher for LSU-02 UAV

Budiyanta

Pranoto

Adi

et al. 2023

Majalah Ilmiah Pengkajian Industri

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The LSU-02 is one of the unmanned aerial vehicles (UAVs) developed by LAPAN (now BRIN). It has a good endurance and flight range, i.e., it can fly for four hours and up to 200 km. However, the UAV needs a good and long runway to do the takeoff and landing operations. In real missions, sometimes it is hard to find the proper runway. Therefore, a method for taking-off without a runway, namely using a launcher, is required. The two most frequently used launcher systems are pneumatic launcher and bungee cord launcher. However, based on our experience using the launcher for LSU-03 UAV, a pneumatic launcher is considered less practical due to its complex and heavy construction. For the LSU-02 to be able to carry out missions in remote areas, a simpler and lightweight launcher is needed. Therefore the bungee cord-based launcher was chosen. The initial requirement for the launcher is that the launcher should able to push the LSU-02 with a maximum takeoff mass of 15 kg put on a 7 kg cradle (total mass 22 kg) and reach the launch speed of 15.2 m/s at the end of launching track. The simulation result shows that the launcher needs a time of 0.28 s to achieve a velocity of 15.2 m/s. Meanwhile, in 0.28 s, the UAV travel distance is 2.55 m. This is the minimum effective length required by the launcher. The real launcher was built with an effective length of 2.7 m. The launcher was tested for launching the LSU-02 with the UAV takeoff mass of 14.4 kg and the cradle mass of 7.5 kg (total of 21.9 kg). It was able to successfully launch the LSU-02 in 0.27 s with a travel distance on the launching rail of 2.5 m. Keywords: Bungee cord, Design, Launcher, LSU-02, Testing, UAV

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Small to Medium UAVs for Civilian Applications in Indonesia

Cited by 3 publications

References 2 publications

Analysis of The Effect of Fabrication and Installation Work on Cost Overruns in Steam Turbine Generator Projects and Coal Boilers in Palembang

Analysis of The Effect of Fabrication and Installation Work on Cost Overruns in Steam Turbine Generator Projects and Coal Boilers in Palembang

Air Quality of a Parking Building in Makassar (A Case Study of Bosowa Tower Parking Building)

Design and Testing of a Bungee Cord Based Launcher for LSU-02 UAV

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