This study aimed to determine effects of diffuser length of open and ducted propellers in UAV applications. This study opted for Computational Fluid Dynamics (CFD) as the primary research method. Results have shown that the diffuser length impacts are largely independent results-wise and show no correlation, however, more data would be needed to form a conclusive statement. From this study, miniature models could be fabricated for the purpose of further testing. For instance, future studies could conduct an experimental approach to attain data that is as close to real-world applications as possible. This will be vital for the industrial application.

Agriculture is a sector in Malaysia where the usage of drones has been widespread throughout seeding, surveying, and crop spraying. It has been well known that the current usage of drones in pineapple farms specifically in Malaysia can be further improved upon. This novel design combines the long flight capabilities of fixed-wing aircraft with the efficiency of the common multirotor UAV hence it is a hybrid of both. The methodology of this research uses flight simulations to extract the data concerned with its flying quality such as coefficient of lift, drag, and moments. This research evaluates the longitudinal stability within the computationally simulated data extracted from a mission-profiled flight. The aim of this is the understanding of practical uses as well as the modification needed prior to manufacture.

UAVs have advantages for tasks like aerial surveillance, agriculture, and transportation because of their low operating costs and the ability to automate the work. This paper introduces a conceptual design of a parcel transport UAV called Baseline-X BWB that carries two kilogrammes of payload for inter-city transport. The scope of discussion is limited to aerodynamic estimation, flight performance, and monetary cost. This UAV prototype has a longer battery charge range, a larger and heavier payload capacity, and a lower operating cost-per-mile and fleet cost per route than conventional designs of the same size, making it feasible and profitable for operators. Keywords: Air Transport; Blended Wing-Body; Unmanned Aerial Vehicle eISSN: 2398-4287© 2022. The Authors. Published for AMER ABRA cE-Bs by e-International Publishing House, Ltd., UK. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Peer–review under responsibility of AMER (Association of Malaysian Environment-Behaviour Researchers), ABRA (Association of Behavioural Researchers on Asians/Africans/Arabians) and cE-Bs (Centre for Environment-Behaviour Studies), Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Malaysia. DOI: https://doi.org/10.21834/ebpj.v7iSI9.4313