Results 11 to 20 of about 167,915 (386)
Numerical Study of Nonadiabatic Wall Effects on Aerodynamic Characteristics of CHN-T1 Standard Model
Aerospace, 2023 Cryogenic wind tunnels provide the for possibility aerodynamic tests to take place over high Reynolds numbers by operating at a low gas temperature to meet the real flight simulation requirements, especially for state-of-the-art large transport aircrafts.
Xiaobing Wang +7 more
doaj +1 more source
气体物理, 2023 It is important to study the effects of pyrolysis and ablation of heat protection material in integrated design of hypersonic vehicles. In order to predict and assess the material pyrolysis and ablation effects on target signatures and microwave ...
Tie-suo GAO +5 more
doaj +1 more source
Unsteady Flow Driven by the Counter-Flow Jets of High-Altitude Engine Based on DSMC Simulation
气体物理, 2023 Counter-flow engines are often used for aircraft slowing or separating. In order to study the interaction between the counter-flow jets and free stream at high altitudes, the rarefied flow driven by two counter-flow jets and hypersonic free stream was ...
Jun-lin WU +4 more
doaj +1 more source
Aerodynamics of Boundary Layer Ingesting Fuselage Fans
, 2021 Boundary Layer Ingestion (BLI) potentially offers a large reduction in fuel burn and pollutant emissions. The Propulsive Fuselage Concept features an electrically driven fan at the aft section of the airframe that ingests 360◦ of the fuselage boundary ...
A. C. Pardo, C. Hall
semanticscholar +1 more source
Hypersonic aerodynamic force balance using temperature compensated semiconductor strain gauges
Advances in Aerodynamics, 2023 Metal foil strain gauges remain the state-of-the-art transducers for wind tunnel balances. While strain gauge technology is very mature, piezoresistive semiconductor sensors offer alternatives that are worth exploring to assess their unique benefits ...
Huacheng Qiu +5 more
doaj +1 more source
Aerodynamics of Flying Saucers [PDF]
Communications in Mathematical Physics, 2020 We identify various structures on the configuration space C of a flying saucer, moving in a three-dimensional smooth manifold M. Always C is a five-dimensional contact manifold. If M has a projective structure, then C is its twistor space and is equipped with an almost contact Legendrean structure.
Michael Eastwood, Paweł Nurowski
openaire +3 more sources
Research on Variable-Step-Size Adaptive Filter Algorithm with a Momentum Term
Applied Sciences, 2023 To address the contradiction between the convergence error and convergence rate in the LMS algorithm, this study proposes a variable-step-size adaptive filter algorithm with a momentum term based on the logistic function.
Binbin Li +7 more
doaj +1 more source
Effect of gas blowing on the head of thermal ablation vehicle
Advances in Aerodynamics, 2022 The reentry vehicle will encounter thermal ablation, especially at the stagnation point regime. A theoretical work has been done to analyze the thermal effect of gas blowing due to thermal ablation of surface material on the head of a general hypersonic ...
Qing Li +3 more
doaj +1 more source
Advances in Aerodynamics, 2020 Properties of wall pressure beneath a transitional hypersonic boundary layer over a 7∘ half-angle blunt cone at angle of attack 6∘ are studied by Direct Numerical Simulation. The wall pressure has two distinct frequency peaks. The low-frequency peak with
Siwei Dong +4 more
doaj +1 more source
Xibei Gongye Daxue Xuebao, 2019 The air intake design system of the dorsal intake combined with the S-shaped inlet has been widely used in various combat aircraft due to its good stealth characteristics.
doaj +1 more source