Mini Glider Design and Implementation with Wing-Folding Mechanism

Demirçalı, Ali Anıl; Üvet, Hüseyin

doi:10.3390/app8091541

Cited by 5 publications

(2 citation statements)

References 21 publications

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“…The wings consist of two sections that are connected via a hinge and are deployed passively using torsion springs. N40 neodymium magnets and steel plates are used between the wing sections to hold them in the deployed phase (Demircali and Uvet, 2018). Servo actuated control surfaces are located at the rear of the glider in order to provide active control during the descent.…”

Section: Propertiesmentioning

confidence: 99%

Design Concept of a Model Can-sized Sub-orbital Satellite

Pradhan

Dadheech²,

Agarwal³

et al. 2021

JER is an international, peer-reviewed journal that publishes f

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Advancements in technology in the fields of satellite and aerospace systems and the need for smaller yet efficient designs have paved the way for further research into nano and pico-satellites. Smaller systems can prove to be more economical in investigating and measuring various parameters of the atmosphere in a localized area. This paper aims to demonstrate the design of one such system. A can-sized satellite (CanSat) has been designed with respect to the restrictions imposed by the CanSat Competition 2020. The design is developed in a way that allows it to be lightweight without compromising structural integrity. The manufacturing technique aimed to be used is 3D printing using Polylactic Acid (PLA) which allows for greater flexibility in customization and ease of fabrication. The application areas of the model satellite range from space exploration to weather forecasting.

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Section: Propertiesmentioning

confidence: 99%

Design Concept of a Model Can-sized Sub-orbital Satellite

Pradhan

Dadheech²,

Agarwal³

et al. 2021

JER is an international, peer-reviewed journal that publishes f

View full text Add to dashboard Cite

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“…The glider simulation is based on the simplified model adopted from Reference [24]. All airborne objects have forces that can be divided into three groups: Lifting force L, drag force D, and the gravity force G. In Figure 4, the lifting vector is always perpendicular to the motion vector, and the resistance vector is always parallel to the motion vector, but directed to the opposite direction.…”

Section: Game Physics: Gliding Simulationmentioning

confidence: 99%

Cloudification of Virtual Reality Gliding Simulation Game

et al. 2018

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Cloud gaming provides cloud computing-based game as a service. In this paper we describe the development of a virtual reality base gliding game as a proof-of-concept. In the cloud, a cloud gaming platform is hosted on cloud servers with two principal components: game logic engaged in the implementation of game mechanics and game interactions, and video renderer that generates the game frames in real-time. The virtual gliding game was realized in the Unity gaming engine. To ensure smooth playability, and access for remote players, the computationally-intensive parts of the game were offloaded to a physically remote cloud server. To analyze the efficiency of the client-cloud interaction, three cloud servers were setup. The results of cloudification were evaluated by measuring and comparing computation offloading performance, network traffic, the probability of service drop, perceptual quality and video quality.Information 2018, 9, 293 2 of 15 (GBaaS) and Game as a Service (GaaS) [6]. Mobile backend-as-a-service (MBaaS) allows game programmers to connect the backend of their software systems to the cloud, as well as to enable integration with social networks [7]. A player can interface with the cloud-hosted application using a thin client model, which controls the displaying of the game's video frames from the cloud server and for responding to the player's commands and responding back to the cloud [8]. These cloud services aim to provide powerful real-time tools specifically dedicated for gaming, with applications emerging in other areas, such as medicine, marketing and education as well.The characteristics of mobile devices recently were rising rapidly in terms of computational abilities, memory, features, and number of apps. However, mobile apps are still relatively inferior by bounded battery life, lack of stability of wireless communications, and prone-to-interruptions connections and constrained bandwidth, and lack of local storage and computing power. By relocating (off-loading) local device tasks to the cloud servers, efficient and ambient cloud services can be accomplished, thus guaranteeing cloud gaming ecosystems with a large number of mobile game players and mobile devices working remotely, but in coordination [9]. Since mobile devices have only limited memory and computational resources, information stored on local devices is synchronized with shared data centers, therefore the system's availability is a demanding factor.The problems faced by cloud gaming include the server provisioning problem [10], with the goal of slashing server running and data storage costs, as well as measuring and reducing the latency [11]. There is also some work focusing on graphics rendering and video encoding for network bandwidth reduction in the video transmission [12]. The cloud resource allocation problems in order to minimize the interaction latency among interactive clients were researched in Reference [13]. A promising approach utilized by many authors to mitigate cloud-related problems can by implemented by computati...

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Aerodynamic efficiency of gliding birds vs comparable UAVs: a review

Harvey¹,

Inman²

2021

Bioinspir. Biomim.

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Here, we reviewed published aerodynamic efficiencies of gliding birds and similar sized unmanned aerial vehicles (UAVs) motivated by a fundamental question: are gliding birds more efficient than comparable UAVs? Despite a multitude of studies that have quantified the aerodynamic efficiency of gliding birds, there is no comprehensive summary of these results. This lack of consolidated information inhibits a true comparison between birds and UAVs. Such a comparison is complicated by variable uncertainty levels between the different techniques used to predict avian efficiency. To support our comparative approach, we began by surveying theoretical and experimental estimates of avian aerodynamic efficiency and investigating the uncertainty associated with each estimation method. We found that the methodology used by a study affects the estimated efficiency and can lead to incongruent conclusions on gliding bird aerodynamic efficiency. Our survey showed that studies on live birds gliding in wind tunnels provide a reliable minimum estimate of a birds’ aerodynamic efficiency while simultaneously quantifying the wing configurations used in flight. Next, we surveyed the aeronautical literature to collect the published aerodynamic efficiencies of similar-sized, non-copter UAVs. The compiled information allowed a direct comparison of UAVs and gliding birds. Contrary to our expectation, we found that there is no definitive evidence that any gliding bird species is either more or less efficient than a comparable UAV. This non-result highlights a critical need for new technology and analytical advances that can reduce the uncertainty associated with estimating a gliding bird’s aerodynamic efficiency. Nevertheless, our survey indicated that species flying within subcritical Reynolds number regimes may inspire UAV designs that can extend their operational range to efficiently operate in subcritical regimes. The survey results provided here point the way forward for research into avian gliding flight and enable informed UAV designs.

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Mini Glider Design and Implementation with Wing-Folding Mechanism

Cited by 5 publications

References 21 publications

Design Concept of a Model Can-sized Sub-orbital Satellite

Design Concept of a Model Can-sized Sub-orbital Satellite

Cloudification of Virtual Reality Gliding Simulation Game

Aerodynamic efficiency of gliding birds vs comparable UAVs: a review

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