Classifications, applications, and design challenges of drones: A review

Hassanalian, Mostafa; Abdelkefi, Abdessattar

doi:10.1016/j.paerosci.2017.04.003

Cited by 1,095 publications

(551 citation statements)

References 147 publications

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“…However, UAVs have “changed the rules of the game” by offering new opportunities and perspectives for data collection (Anderson & Gaston, 2013; Gago et al., 2015). UAVs are generally low cost and can be operated without significant expertise or training (Anderson & Gaston, 2013; Hassanalian & Abdelkefi, 2017).…”

Section: Big Problems Small Solutionsmentioning

confidence: 99%

“…Beneath this weight threshold, very small UAVs are further subdivided into NAVs (<200 g) and MAVs (200 to 2000 g), following weight criteria proposed by Brooke‐Holland (2012). An extensive review of current drone classification criteria is provided by Hassanalian & Abdelkefi (2017). As an illustrative example, some MAV and NAV commercial models can be seen in Figure 1.…”

Section: Big Problems Small Solutionsmentioning

confidence: 99%

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Nano and Micro Unmanned Aerial Vehicles (UAVs): A New Grand Challenge for Precision Agriculture?

et al. 2020

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By collecting data at spatial and temporal scales that are inaccessible to satellite and field observation, unmanned aerial vehicles (UAVs) are revolutionizing a number of scientific and management disciplines. UAVs may be particularly valuable for precision agricultural applications, offering strong potential to improve the efficiency of water, nutrient, and disease management. However, some authors have suggested that the UAV industry has overhyped the potential value of this technology for agriculture, given that it is difficult for non‐specialists to operate UAVs as well as to process and interpret the resulting data. Here, we analyze the barriers to applying UAVs for precision agriculture, which range from regulatory issues to technical requirements. We then evaluate how new developments in the nano‐ and micro‐UAV (NAV and MAV, respectively) markets may help to overcome these barriers. Among the possible breakthroughs that we identify is the ability of NAV/MAV platforms to directly quantify plant traits using methods (e.g., object‐oriented classification) that require less image calibration and interpretation than spectral index–based approaches. We suggest that this potential, when combined with steady improvements in sensor miniaturization, flight precision, and autonomy as well as cloud‐based image processing, will make UAVs a tool with much broader adoption by agricultural managers in the near future. If this wider uptake is realized, then UAVs have real potential to improve agriculture's resource‐use efficiency. © 2020 by John Wiley & Sons, Inc.

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Section: Big Problems Small Solutionsmentioning

confidence: 99%

Section: Big Problems Small Solutionsmentioning

confidence: 99%

Nano and Micro Unmanned Aerial Vehicles (UAVs): A New Grand Challenge for Precision Agriculture?

et al. 2020

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“…The usage of rotorcrafts have skyrocketed in the recent past not only in military applications but in our daily lives as well [27], [28]. Rotary-wing unmanned aerial vehicles (RUAVs) are rapidly finding their way to provide assistance in every possible spectrum imaginable including aerial imagery & mapping, surveillance, infrared thermography in construction industry, product shipping/delivery and many more [29]- [32].…”

Section: Research Significancementioning

confidence: 99%

Unmanned Rotorcraft in Aggressive Environment: Aerodynamic Flow Performance Against Wind Gust

Awal¹

2017

GEOMATE

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Unmanned rotary-wing aircrafts or rotorcrafts are often prone to diverse atmospheric turbulences, and undeniably, abrupt gusts are reckoned to be the most acquainted commotion of them. Time and again, gust turbulence have dictated being the regulating trigger for countless mishaps concerning micro aerial vehicles. Given that the core/main rotor provides principal lift along with governing directional control and dynamic stability for any rotorcraft, the demeanors of thrust or induced air-flow through the gyrating blades largely signify the barebones of its functionality. This paper presents an idiosyncratic approach towards reviewing the impact of wind gust on rotor induced aerodynamic flow performance of an unmanned rotorcraft. Artificial gusts have been generated through the inherent concept of forced pitched oscillation without the use of any conventional wind tunnel. Gust air-speed and the rotor induced air-speed are gauged through the same contraption to provide homogeneous quantitative valuation. Each rotor-halves have been assessed 'root-to-tip' across designated span-wise positions against selected strengths of gust. Comparative analysis with normal atmospheric condition indicated gradual loss of cumulative thrust during hover (15-40%) and forward flight (10-30%) within the stipulated gust range and infers the risk of declining altitude. Protuberant imbalance of thrust across the rotor disk during hover indicated the likelihood of lackadaisical half-pitched rolling motion. However, during forward flight, the reduced discrepancy of thrust between the rotor halves signified gradual loss of cruising speed with regards to the increasing gust strength for the specific rotorcraft model. Experimental findings in this study exhibited prospect of appraisal with full-scale rotorcrafts.

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“…Many proposals concerning how to classify drones, RPASs (remotely piloted aircraft systems), UASs (unmanned aircraft systems), or UAVs (unmanned aerial vehicles) can be found in specific literature, and a comparison of these can be consulted in, for example, Hassanalian and Abdelkefi (2017). A basic classification first of all distinguishes the mission of the drone: civilian or military.…”

Section: Introductionmentioning

confidence: 99%

Ethics and Civil Drones

2018

SpringerBriefs in Law

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Classifications, applications, and design challenges of drones: A review

Cited by 1,095 publications

References 147 publications

Nano and Micro Unmanned Aerial Vehicles (UAVs): A New Grand Challenge for Precision Agriculture?

Nano and Micro Unmanned Aerial Vehicles (UAVs): A New Grand Challenge for Precision Agriculture?

Unmanned Rotorcraft in Aggressive Environment: Aerodynamic Flow Performance Against Wind Gust

Ethics and Civil Drones

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