scholarly journals Research on Innovative Design Method of In-wheel Jet Flying Car-Dunhuang Feitian

2020 ◽  
Vol 179 ◽  
pp. 02022
Author(s):  
Yunbo Ji
Keyword(s):  
Traffic Congestion ◽  
Design Method ◽  
The Body ◽  
Flight Performance ◽  
Stabilization System ◽  
Innovative Design ◽  
Jet Engine ◽  
Broad Application ◽  
Body Design ◽  
Congestion Problems

The car has been invented for more than a century. In the 21st century, new cars will realize the function of land and sky bidirectional driving. The author designed a flying concept car, powered by a wheel jet engine, named Dunhuang Feitian. He won the second prize in the Second China University Art Competition. The car is equipped with a “turbine ram engine” inside the four hubs. The aerodynamic layout is designed in a cross shape. The wheel engine jets downwards, which can flexibly adjust the flight attitude. The author did not sacrifice industrial design aesthetics in order to highlight flight performance. He borrowed the beautiful curve contours of Dunhuang Feitian in the body design, designed the car to be streamlined, and equipped with a four-axis stabilization system in safety configuration. performance. In addition, this article also predicts the future development of automobiles, and provides comfortable, environmentally friendly, green solutions to alleviate the increasingly serious traffic congestion problems, and has a broad application prospect.

Design and Research on Aluminum-Plastic Trunk Lid

2012 ◽  
Vol 538-541 ◽  
pp. 833-840
Author(s):  
Duo Nian Yu ◽  
Li Yang Gu ◽  
Chong Yang Lu
Keyword(s):  
Design Method ◽  
The Body ◽  
Frame Structure ◽  
Light Weight ◽  
Mechanical Stiffness ◽  
Plastic Structure ◽  
Stiffness Properties ◽  
Body Design ◽  
Static Mechanical ◽  
Panel Thickness

Abstract: In this paper, the traditional trunk lid was analyzed using finite element method firstly, and then the basic mechanical properties of the lid were obtained, which were used as the topology optimization constrains of the trunk lid outer panel, then the aluminum alloy frame structure that could satisfy the static mechanical stiffness properties was designed; According to the requirement, the trunk lid inner panel was redesigned, the material properties determined in advance were given to the inner and outer panel respectively, after being assembled, the best panel thickness could be obtained by ways of size optimization. Compared to the analysis results, the new aluminum-plastic structure can meet the requirements in performance, and has significant effect on light-weight. This paper provides some reference for the development of the aluminum-plastic structure of the body design method.

Determination of Optimal Public Transportation Routes Using Firefly and Tabu Search Algorithms

2020 ◽  
Vol 4 (5) ◽  
pp. 884-891
Author(s):  
Salwa Salsabila Mansur ◽  
Sri Widowati ◽  
Mahmud Imrona
Keyword(s):  
Tabu Search ◽  
Public Transportation ◽  
Traffic Congestion ◽  
Search Algorithm ◽  
Urban Transportation ◽  
The Public ◽  
Comparison Results ◽  
Congestion Problems ◽  
Transportation Routes

Traffic congestion problems generally caused by the increasing use of private vehicles and public transportations. In order to overcome the situation, the optimization of public transportation’s route is required particularly the urban transportation. In this research, the performance analysis of Firefly and Tabu Search algorithm is conducted to optimize eleven public transportation’s routes in Bandung. This optimization aims to increase the dispersion of public transportation’s route by expanding the scope of route that are crossed by public transportation so that it can reach the entire Bandung city and increase the driver’s income by providing the passengers easier access to public transportations in order to get to their destinations. The optimal route is represented by the route with most roads and highest number of incomes. In this research, the comparison results between the reference route and the public transportation’s optimized route increasing the dispersion of public transportation’s route to 60,58% and increasing the driver’s income to 20,03%.

Flight performance monitoring with optimal filtering applications

2019 ◽  
Vol 124 (1272) ◽  
pp. 170-188
Author(s):  
V. A. Deo ◽  
F. Silvestre ◽  
M. Morales
Keyword(s):  
Kalman Filter ◽  
Performance Monitoring ◽  
The Body ◽  
Flight Performance ◽  
Performance Parameters ◽  
Sideslip Angle ◽  
Fuel Flow ◽  
Aircraft Performance ◽  
Lift And Drag

ABSTRACTThis work presents an alternative methodology for monitoring flight performance during airline operations using the available inboard instrumentation system. This method tries to reduce the disadvantages of the traditional specific range monitoring technique where instrumentation noise and cruise stabilisation conditions affect the quality of the performance monitoring results. The proposed method consists of using an unscented Kalman filter for aircraft performance identification using Newton’s flight dynamic equations in the body X, Y and Z axis. The use of the filtering technique reduces the effect of instrumentation and process noise, enhancing the reliability of the performance results. Besides the better quality of the monitoring process, using the proposed technique, additional results that are not possible to predict with the specific range method are identified during the filtering process. An example of these possible filtered results that show the advantages of this proposed methodology are the aircraft fuel flow offsets, as predicted in the specific range method, but also other important aircraft performance parameters as the aircraft lift and drag coefficients (CL and CD), sideslip angle (β) and wind speeds, giving the operator a deeper understanding of its aircraft operational status and the possibility to link the operational monitoring results to aircraft maintenance scheduling. This work brings a cruise stabilisation example where the selected performance monitoring parameters such as fuel flow factors, lift and drag bias, winds and sideslip angle are identified using only the inboard instrumentation such as the GPS/inertial sensors, a calibrated anemometric system and the angle-of-attack vanes relating each flight condition to a specific aircraft performance monitoring result. The results show that the proposed method captures the performance parameters by the use of the Kalman filter without the need of a strict stabilisation phase as it is recommended in the traditional specific range method, giving operators better flexibility when analysing and monitoring fleet performance.

Verification and validation of the effectiveness of an innovative design method for technovation

2021 ◽  
Vol 2021.59 (0) ◽  
pp. 04c1
Author(s):  
Jun ANDO ◽  
Haziq Muhammad Syamel ◽  
Md Issa Nurhayati ◽  
Wira Jazair Bin Yahya ◽  
Saiful Amri Mazian ◽  
...  
Keyword(s):  
Design Method ◽  
Verification And Validation ◽  
Innovative Design

scholarly journals Innovative design and simulation of clothing products for children with atypical changes in conformation and posture

2017 ◽  
Vol 68 (01) ◽  
pp. 63-68
Author(s):  
POPESCU GEORGETA ◽  
NICULESCU CLAUDIA ◽  
OLARU SABINA
Keyword(s):  
Age Groups ◽  
Simulation Software ◽  
The Body ◽  
Virtual Simulation ◽  
Simulation And Modeling ◽  
Anthropometric Data ◽  
Innovative Design ◽  
3D Simulations ◽  
The One ◽  
Product Verification

The paper presents the design stages of clothing products for children with atypical changes in conformation and posture and the virtual simulation and modeling for the body-product verification. The design technology is an innovative one that allows obtaining the customized patterns by made-to-measure method applied to standardized patterns for all age groups of children, selecting the one corresponding to the typo-dimension of studied subject. The large number of existing anthropometric data and viewing virtual body allows the identification of areas of the body that shows changes in conformation and posture and provides information to the designer and pattern technician in order to develop suitable products in terms of functionality and aesthetics. With the help of simulation software Optitex 3D simulations modeling is performed on the body until fulfillment of the compliance degree for the designed product.

scholarly journals Desain Bilik Sterilisasi "White Box"

2021 ◽  
Vol 17 (1) ◽  
pp. 68-75
Author(s):  
Noor Hamidah ◽  
Dwi Anung Nindito ◽  
Tatau Wijaya Garib ◽  
Waluyo Nuswantoro ◽  
Mahdi Santoso
Keyword(s):  
Performance Test ◽  
Design Method ◽  
Skin Surface ◽  
The Body ◽  
Piping System ◽  
Design Activity ◽  
Test Function ◽  
Function Test ◽  
And Performance ◽  
Implementation Stage

ABSTRACT The sterilization chamber is designed to sterilize the body using a filler formulation that is not harmful to the skin surface. Formulation, namely the composition of filler fluids (type, dose and amount) using substances that are safe for the body accordingly, certainly provides benefits. The use of the sterilization booth uses the correct and safe filling fluid. The sterilization chamber uses a mist nozzle sprayer (with the appropriate discharge) to spray the filling liquid so that the user is safe. This sterilization booth is named "White Box". This "White Box" research aims to design (functional and structural) and test (function test and performance test) on a system and mechanism for condensing the condensation of a humidifier that can fill the sterilization room optimally. The design method of the "White Box" sterilization booth uses a qualitative method with the following phases: (1) The preparation stage, namely the functional design and the structural design of the "White Box"; (2) The implementation stage is analyzing the use of tools and materials and making sterilization booths; (3) Post-implementation stage, namely testing the sterilization chamber, including the function test and performance test of the sterilization chamber. The design activity of the "White Box" sterilization booth was carried out by testing various variations of the prototype, including variations in the dimensions of the distribution pipe, the shape of the distribution pipe, and variations of the piping system. The validation process includes: (1) The diameter of the pipe against humidifier dew bursts; (2) The shape of the piping against humidifier dew spray; and (3) the length of the pipe passage to the humidifier dew spray. ABSTRAKBilik sterilisasi didesain untuk mensterilisasi tubuh dengan menggunakan formulasi zat pengisi yang tidak berbahaya bagi permukaan kulit. Formulasi yaitu komposisi cairan pengisi (jenis, takaran dan jumlah) menggunakan zat yang aman bagi tubuh yang sesuai, tentu memberi manfaat. Penggunaan bilik sterilisasi menggunakan cairan pengisi yang benar dan aman. Bilik sterilisasi menggunakan mist nozzle sprayer (yang debitnya sesuai) untuk menyemprotkan cairan pengisinya sehingga pengguna aman. Bilik sterilisasi ini diberi nama "White Box". Penelitian "White Box"ini bertujuan merancang (fungsional dan struktural) dan menguji coba (uji fungsi dan uji kinerja) pada sebuah sistem dan mekanisme penyaluran pengembunan dari alat humidifier yang mampu memenuhi ruang bilik sterilisasi secara optimal. Metode rancang bangun bilik sterilisasi "White Box" menggunakan metode kualitatif dengan tahap kegiatan meliputi: (1) Tahap persiapan yaitu rancangan fungsional dan rancangan struktural"White Box"; (2) Tahap pelaksanaan yaitu analisa penggunaan alat dan bahan dan Pembuatan bilik sterilisasi; (3) Tahap Pasca Pelaksanaan yaitu pengujian bilik sterilisasi antara lain uji fungsi dan uji kinerja bilik sterilisasi. Muatan kegiatan rancang bangun bilik sterilisasi "White Box" dilakukan dengan cara menguji coba berbagai variasi prototipe, meliputi variasi dimensi pipa penyaluran, bentuk pipa penyalur, variasi sistem perpipaan. Proses validasi yang dilakukan meliputi: (1) Diamater pipa terhadap semburan embun humidifier; (2) Bentuk pipa penyalur terhadap semburan embun humidifier; dan (3) Panjang lintasan pipa terhadap semburan embun humidifier.

scholarly journals Contribution to Improving the Quality of Traffic in Mobile Networks

2020 ◽  
pp. 21-28
Author(s):  
Onyonkiton Théophile Aballo ◽  
Roland Déguénonvo ◽  
Antoine Vianou
Keyword(s):  
Mobile Networks ◽  
Traffic Congestion ◽  
Loss Rate ◽  
Fourth Generation ◽  
Good Decision ◽  
Latency Jitter ◽  
Congestion Problems ◽  
Time Required ◽  
Effective Speed

Today, mobile networks are faced with congestion which results in regular slowness given the variation in the actual speed of the network, that is to say the time required to transmit all of the data from a point to another. In third and fourth generation mobile networks, actual throughput is not directly measurable, it actually consists of three separate indicators, latency, jitter and loss rate. Many studies have shown that these parameters have a particular influence on congestion problems. In practice, the effective speed on the network is inversely proportional to the latency. However, the bit rate is four times the latency. Next, jitter is the variation of latency over time, impacting the flow by influencing latency. In this article, we have examined the analysis of traffic congestion in third and fourth generation networks in order to make a comparative study of the congestion rate for good decision-making.

Many-legged maneuverability: dynamics of turning in hexapods

1999 ◽  
Vol 202 (12) ◽  
pp. 1603-1623 ◽  
Author(s):  
D.L. Jindrich ◽  
R.J. Full
Keyword(s):  
Horizontal Plane ◽  
Center Of Mass ◽  
Vertical Plane ◽  
Force Production ◽  
The Body ◽  
Mean Velocity ◽  
Blaberus Discoidalis ◽  
Body Design ◽  
Reaction Forces ◽  
Straight Ahead

Remarkable similarities in the vertical plane of forward motion exist among diverse legged runners. The effect of differences in posture may be reflected instead in maneuverability occurring in the horizontal plane. The maneuver we selected was turning during rapid running by the cockroach Blaberus discoidalis, a sprawled-postured arthropod. Executing a turn successfully involves at least two requirements. The animal's mean heading (the direction of the mean velocity vector of the center of mass) must be deflected, and the animal's body must rotate to keep the body axis aligned with the heading. We used two-dimensional kinematics to estimate net forces and rotational torques, and a photoelastic technique to estimate single-leg ground-reaction forces during turning. Stride frequencies and duty factors did not differ among legs during turning. The inside legs ended their steps closer to the body than during straight-ahead running, suggesting that they contributed to turning the body. However, the inside legs did not contribute forces or torques to turning the body, but actively pushed against the turn. Legs farther from the center of rotation on the outside of the turn contributed the majority of force and torque impulse which caused the body to turn. The dynamics of turning could not be predicted from kinematic measurements alone. To interpret the single-leg forces observed during turning, we have developed a general model that relates leg force production and leg position to turning performance. The model predicts that all legs could turn the body. Front legs can contribute most effectively to turning by producing forces nearly perpendicular to the heading, whereas middle and hind legs must produce additional force parallel to the heading. The force production necessary to turn required only minor alterations in the force hexapods generate during dynamically stable, straight-ahead locomotion. A consideration of maneuverability in the horizontal plane revealed that a sprawled-postured, hexapodal body design may provide exceptional performance with simplified control.

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