Abstract:The application of low order panel method with the Dirichlet boundary condition on complex aircraft configuration have been studied in high subsonic and transonic speeds. Low order panel method has been used to solve the case of the steady, inviscid and compressible flow on a forward swept wing – canard configuration with cylindrical fuselage and a vertical stabilizer with symmetrical cross section. The aerodynamic coefficients for the forward swept wing aircraft were calculated using measured wake shape from an experimental work on same model configuration. The study showed that the application of low order panel method can be used with acceptable results.

Keywords: Panel Method, Numerical aerodynamic analysis, Computational fluid dynamic, Forward Swept Wing, Aerodynamic Characteristics, Wing-Canard Configuration.
Title: Use of Panel Method in High Subsonic and Transonic Aerodynamic Analysis of Complex Aircraft Configuration
Author: Ahmed Tawfeeq Mustafa Abed
ISSN 2394-9678
International Journal of Novel Research in Electrical and Mechanical Engineering
Novelty Journals

Abstract:The present scenario the circuit subthreshold CMOS logic circuits are becoming increasingly popular energy- constrained applications where high performance is not required. Minimum energy consumption of digital logic circuits can be obtained by operating in the subthreshold regime. However, in this regime process variations can result in up to order of magnitude variations in ION / IOFF ratios leading to timing errors, which can have a destructive effect on the functionality of the subthreshold circuits. These timing errors become more frequent in scaled technology nodes where process variations are highly prevalent. Therefore, mechanisms to mitigate these timing errors while minimizing the energy consumption are required. In this proposed work, Low power subthreshold logic circuits using adaptive feedback equalizer circuit is designed. The adaptive equalizer technique is used with a sequential digital logic to mitigate the process variation effects and reduce the dominant leakage energy components in the subthreshold digital logic circuits. The performance of the proper circuit is evaluated for different input voltages. This work can be extended by the scaling down the technology to reduce the minimum power consumption.

Keywords:Index Terms, Adaptive Feedback equalizer, Low power subthreshold, variable threshold inverter.
Title:Designing Low Power Subthreshold Logic Circuits Using AFE
Author:M. MAHALAKSHMI, P. THIRUVALAR SELVAN
ISSN 2394-9678
International Journal of Novel Research in Electrical and Mechanical Engineering
Novelty Journals

Abstract:The present scenario of the circuit subthreshold CMOS logic circuits is becoming increasingly popular energy- constrained applications where high performance is not required. Minimum energy consumption of digital logic circuits can be obtained by operating in the subthreshold regime. However, in this regime process variations can result in up to order of magnitude variations in ION / IOFF ratios leading to timing errors, which can have a destructive effect on the functionality of the subthreshold circuits. These timing errors become more frequent in scaled technology nodes where process variations are highly prevalent. Therefore, mechanisms to mitigate these timing errors while minimizing the energy consumption are required. In this proposed work, Low power subthreshold logic circuits using adaptive feedback equalizer circuit is designed. The adaptive equalizer technique is used with a sequential digital logic to mitigate the process variation effects and reduce the dominant leakage energy components in the subthreshold digital logic circuits. The performance of the proper circuit is evaluated for different input voltages, other work for 4 bit Ripple Carry Adder in designed using to the logic gate size and power is discussed in the simulation is successfully in verified with the help of Microwind and Dsch tool.

Keywords:Adaptive Feedback equalizer, Low power subthreshold, variable threshold inverter, Ripple Carry Adder.
Title:Design and analysis of RCA in Subthreshold Logic Circuits Using AFE
Author:MAHALAKSHMI M, P.THIRUVALAR SELVAN
ISSN 2394-9678
International Journal of Novel Research in Electrical and Mechanical Engineering
Novelty Journals

Abstract: It has came to my mind for a long time to design a type of Air Blade Umbrella so people can liberate their hands and the new type of Air Blade Umbrella works better in shielding people in a rainy day. Diagram attached is the structure design of this device. As it will be weared on top of peoples' head, like a hat, so all the materials will be the lightest, and to make it affordable to people, like plastics. We also want the device to be low-noise as people wear it in rain, so the electric motor to motivate the fan and axis will all be the most up-to-date silent modes, the installation will also be based on a elastic sound proof basis.

Keywords: Air Blade Umbrella, structure design.
Title: A Novel Concept of Air Blade Rain Hat
Author: Ting Lu
ISSN 2394-9678
International Journal of Novel Research in Electrical and Mechanical Engineering
Novelty Journals