Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Application of a Fixed-Wing Unmanned Aerial Vehicle (UAV) in Reforestation of Lebanon Cedar (Cedrus Libani A. Rich)
Date
2011-03-16
Author
Şahin, Mustafa
Metadata
Show full item record
Item Usage Stats
278
views
0
downloads
Cite This
Studies and development of Unmanned Aerial Vehicles (UAVs) started shortly after the first controlled, powered, heavier-than-air human flight in 1903. UAVs have many advantages over piloted aircraft, such as minimizing human risk, flying economically, and flying for extended periods of time. Early UAVs were mostly developed for military purposes, but modern development encompasses both military and civilian uses and is now pursued worldwide. While UAVs serve a number of important civilian functions such as traffic control, pipeline observation, road maintenance, dam surveillance, forest fire search/observation, dispersal of insecticides on rice paddies and determination of harvest periods of agricultural products, their potential in reforestation efforts is untested. They are a promising, highly efficient and practical means of seed dispersal, particularly in hard-to-reach areas. In Turkey, UAVs stand to play a vital role in the ongoing reforestation efforts of cedar trees. Cedars are one of the most valuable and versatile trees in Turkey and have suffered from severe overcutting, as well as overgrazing by livestock over many years. In this study, a civilian UAV was developed specifically for cedar tree reforestation. A model aircraft was modified, and an originally designed and produced seed dispersal system was mounted on the UAV. Two test flights at different altitudes were carried out in Golbasi, Ankara, July 12, 2011. According to the test flight results, at altitudes of 9 meters and 6 meters, seed dispersal reached widths of 45 and 30 meters, respectively. Further, the density of seed distribution for both tests was compatible with favorable conditions for seed germination. When the test results are examined, the UAV is proven to be a versatile, economical, safe and highly effective tool in reforestation efforts
Subject Keywords
Unmanned Aerial Vehicle (UAV)
,
Lebanon cedar
,
Reforestation
URI
http://aiac.ae.metu.edu.tr/paper.php?No=AIAC-2011-073
https://hdl.handle.net/11511/83208
Conference Name
6th Ankara International Aerospace Conference, AIAC 2011 (14 - 16 Eylül 2011)
Collections
Department of Aerospace Engineering, Conference / Seminar
Suggestions
OpenMETU
Core
Unmanned Aerial Vehicle Domain: Areas of Research
Demir, Kadir Alpaslan; Cicibas, Halil; ARICA, NAFİZ (2015-07-01)
Unmanned aerial vehicles (UAVs) domain has seen rapid developments in recent years. As the number of UAVs increases and as the missions involving UAVs vary, new research issues surface. An overview of the existing research areas in the UAV domain has been presented including the nature of the work categorised under different groups. These research areas are divided into two main streams: Technological and operational research areas. The research areas in technology are divided into onboard and ground techno...
Autonomous quadrotor flight with vision-based obstacle avoidance in virtual environment
Eresen, Aydin; Imamoglu, Nevrez; Efe, Mehmet Onder (Elsevier BV, 2012-01-01)
In this paper, vision-based autonomous flight with a quadrotor type unmanned aerial vehicle (UAV) is presented. Automatic detection of obstacles and junctions are achieved by the use of optical flow velocities. Variation in the optical flow is used to determine the reference yaw angle. Path to be followed is generated autonomously and the path following process is achieved via a PID controller operating as the low level control scheme. Proposed method is tested in the Google Earth (R) virtual environment fo...
Modelling of an articulated flying body and control system design
Güzelcan, Burçin Tutku; Yazıcıoğlu, Yiğit; Özgören, Mustafa Kemal; Department of Mechanical Engineering (2022-12-5)
This study presents the conceptual design of an articulated coaxial rotor Unmanned Air Vehicle (UAV) with three-dimensional dynamical models and a control strategy. Conventional rotary-wing aircrafts operate maneuvers via swashplates which is a complex mechanism adding bulky elements to the aircrafts. While designing light weight UAVs, there appears a need for less complex and compact mechanisms for maneuverability rather than swashplates. There are different methods and mechanisms to acquire maneuvering wi...
Control system design and implementation of a tilt rotor UAV
Cevher, Levent; Tekinalp, Ozan; Department of Aerospace Engineering (2019)
In this thesis, a hybrid vertical take off and landing unmanned air vehicle platform is designed and developed. The platform uses tricopter configuration for takeoff and landing while it uses its fixed wings for forward flight. Control algorithms are developed for the VTOL aircraft. For this purpose, first nonlinear simulation code is developed in Matlab/Simulink environment. The simulation uses the wind tunnel experimental data for the propellers and aerodynamic data obtained from a package program XFLR 5 ...
Aerodynamic design and control of tandem wing unmanned aerial vehicle
Kaya, Taşkın; Özgen, Serkan; Department of Aerospace Engineering (2019)
This thesis presents an approach towards the design methodology of electrical propulsion, tandem wing unmanned aerial vehicle. Due to its possible rewarding features, tandem wing design is investigated as the main subject of this study. The stability and control characteristics of tandem wing aircraft are critical since the interference between the two wings may result in nonlinear aerodynamic characteristics for varying angles of attack. Thus, the design of the controller system requires careful handling, ...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
M. Şahin, “Application of a Fixed-Wing Unmanned Aerial Vehicle (UAV) in Reforestation of Lebanon Cedar (Cedrus Libani A. Rich),” presented at the 6th Ankara International Aerospace Conference, AIAC 2011 (14 - 16 Eylül 2011), Ankara, Türkiye, 2011, Accessed: 00, 2021. [Online]. Available: http://aiac.ae.metu.edu.tr/paper.php?No=AIAC-2011-073.