Separation and Swarming Flight of Drones: We are interested in design, manufacturing, and control of new concepts for separation and swarming drones. We propose some new concepts of UAVs which are able to convert to several MAVs. Being in form of a UAV means having more endurance and higher altitude due to the long wingspan and high aspect ratio. The decomposition and separation ability of the UAV to five MAVs solves several problems and provide benefits in flight mission. In three conditions, the UAV can be converted to MAVs. First, when the UAV is attacked or has defect, the intact parts separate and pursue the mission. Second, when the drone is supposed to increase its video covered area, in this mode, with separation of MAVs, five micro air vehicles with five cameras can scan or map out a vaster area than one single UAV. Third, when the micro drones want to increase their stealth property, MAVs can perform a swarm flight. Similar concepts will be proposed for other drones with different configurations. These types of drones also can scarifies a part of their body in danger (like lizards) while still will be able to fly. Fore more details click on the link.
Application of Swarming Drones for Cellular Phone Network Loading and Field Tests : Cellular network operators have problems to test their network without affecting their user experience. Testing network performance in a loaded situation is a challenge for the network operator because network performance differs when it has more load on the radio access part. In this project, deploying swarming drones is proposed to load the cellular network and scan/test the network performance more realistically. Besides, manual swarming drone navigation is not efficient enough to detect problematic regions. Hence, particle swarm optimization is proposed to be deployed on swarming drone to find the regions where there are performance issues. Swarming drone communications helps to deploy the particle swarm optimization (PSO) method on them. Loading and testing swarm separation help to have almost non-stochastic received signal level as an objective function. Moreover, there are some situations that more than one network parameter should be used to find a problematic region in the cellular network. It is also proposed to apply multi-objective PSO to find more multi-parameter network optimization at the same time.
Performance Enhancement and Load Balancing of Swarming Drones Through Position Reconfiguration: There is currently a growing interest in the area of drag reduction of unmanned aerial vehicles. In this project, the swarming flight of the fixed-wing drones and a load balancing mechanism during the swarm is investigated. As an example, the swarm flight of EBee Sensfly flying wings is analyzed through the proposed methodology. The aerodynamic drag forces of each individual drone and the swarm are modeled theoretically. It is shown that drones through the swarming flight can save up to 70 % of their energy and consequently improve their performance. As swarming drones have different loads and consuming a different level of power depending on their positions, there is a need to replace them during the flight in order to enhance their efficiency. To this end, regarding the number of drones, a replacement algorithm is defined for them so that they will be able to save more power during their mission. It is shown that there is more than 21 percent improvement in flight time and distance of swarming drones after replacement. This method of replacement and formation can be considered as one of the effective factors in a drag reduction of swarming aerial vehicles.
Delivery Drones: We are interested in design and manufacturing new concepts of drones for high distances cargo delivery. Package delivery is starting to integrate drones as a cheaper alternative to conventional delivery services. The development of robust and stable aircraft capable of delivering parcels is a requirement for these missions. Recently, one of the applications which has attracted the attention of different companies is drone delivery service where different types of products can be transported by them. For example, Amazon, Google, and USPS and FedEx post service in United States have employed drones to deliver packages to customers. The rotary wings concepts, such as quadcopters have been proposed for destination with low distances and low weight cargoes. The drawbacks of the existing delivery drones include low flight range, low flight altitude, urban obstacles, depending on climate conditions, cargo size and weight limitation, and low endurance. In AFASL research group we aim to propose some new stable concepts of vertical takeoff landing drones which can be efficiently navigated in diverse situations.
Solar Drones: The diverse application of drones has debated to the fact that engineers do research on optimizing the performance of these flying vehicles. For the micro drones, one of the challenging issues is their high power consumption to the limited power capacity due to their weight limitation. Nowadays, applying solar panels on drones is considered as a common method to increase the flight endurance. The provided energy form solar cells can be used for motors and other systems of drones. In solar systems, usually battery is used as a backup when the solar cells cannot produce enough power flying under the cloud or in the dark. In other words, a hybrid source which is combination of the solar cells and battery is usually used for powering drones. Solar cells which are thin, flexible, low weight, and efficient are applied on the wings of different types of drones. Therefore, in AFASL research group we plan to work on design, manufacturing, and performance enhancement of solar drones with different configurations.
Amphibious and Marine Drones: There is a growing interest for the use of marine drones in military and civilian applications to eliminate the risk of human involvement in marine environment and to provide cheaper alternatives to larger flight vehicles. The proposed systems will be marine drones that blend in with nature and can fly, dive, and swim with better endurance, or the drones that can be launched from submarines to perform different type of the missions in marine environment. In other words, one of the key tasks in this effort will be the development of novel designs of marine drones that can combine the flying, skimming, and swimming of unmanned marine vehicles and design of novel launcher systems. The another goal of this research is studying the fundamental of diving avian and insects to be inspired for flying and swimming amphibious unmanned aerial systems in different configurations. This research will encompass a conceptual design process, aerodynamic and hydrodynamic analyses, navigation, control, and guidance techniques, new technologies to improve the endurance of the drones, and material and fabrication of the prototypes.