Results 91 to 100 of about 81,958 (286)
New Impacts on Mars: Unraveling Seismic Propagation Paths Through a Cerberus Fossae Impact Detection
Geophysical Research Letters, Volume 52, Issue 3, 16 February 2025.Abstract To date, eight meteoroid impacts have been identified in the seismic record of NASA's InSight mission on Mars, occurring either within 300 km or beyond 3,500 km. We report the association of a high‐frequency marsquake, S0794a, with a new 21.5‐m‐diameter impact crater discovered at an intermediate distance of 1,640 km in the tectonically active
Constantinos Charalambous +14 more
wiley +1 more source
Aerodynamic heating in the vicinity of corners at hypersonic speeds [PDF]
Aerodynamic heating in vicinity of corners at hypersonic ...
Stainback, P. C., Weinstein, L. M.
core +1 more source
Electro-chemical grinding [PDF]
, 1972 Electro-chemical grinding technique has rotation speed control, constant feed rates, and contour control. Hypersonic engine parts of nickel alloys can be almost 100% machined, keeping tool pressure at virtual zero.
Feagans, P. L.
core +1 more source
International Journal for Numerical Methods in Engineering, Volume 126, Issue 3, 15 February 2025.ABSTRACT This article is dedicated to the development of a model to simulate fast transient compressible flows on solid structures using immersed boundary method (IBM) and a lattice Boltzmann solver. Ultimately, the proposed model aims at providing an efficient algorithm to simulate strongly‐coupled fluid‐structure interactions (FSI). Within this goal,
Hippolyte Lerogeron +3 more
wiley +1 more source
Unconventionally Designed Tracking Loop Adaptable to Plasma Sheath Channel for Hypersonic Vehicles
Sensors, 2020 An aircraft that moves through the atmosphere at hypersonic speed is covered by plasma sheath, which causes random and fast time-varying amplitude attenuation and phase fluctuation in received signals. This paper comprehensively analyzes the mechanism of
Lei Shi, Shurong Yuan, Bo Yao
doaj +1 more source
Survey of Vacuum UltraViolet experimental data in relation to radiation characterization for Earth high-speed re-entry [PDF]
arXiv, 2020 This contribution is a survey of the available experimental radiation data measured in the VUV range related to hypersonic atmospheric entry. The objective is to identify the experimental datasets already gathered during aerothermodynamics studies for preparing sample return missions, and future.
arxiv
Factors Affecting Loads at Hypersonic Speeds [PDF]
Factors affecting loads at hypersonic ...
Bertram, Mitchel H. +1 more
core +1 more source
Test of a NASA blunt body with flares in the JPL 20-inch supersonic and 21-inch hypersonic wind tunnels [PDF]
Aerodynamic characteristics of flares mounted on blunt bodies at supersonic and hypersonic ...
Weaver, R. W.
core +1 more source
, 2017 We have carried out axisymmetric numerical simulations of a spatially developing hypersonic boundary layer over a sharp 7$^{\circ{}}$-half-angle cone at $M_\infty=7.5$ inspired by the experimental investigations by Wagner (2015).
Mack L. +9 more
core +1 more source
Robust multi-fidelity design of a micro re-entry unmanned space vehicle [PDF]
, 2011 This article addresses the preliminary robust design of a small-scale re-entry unmanned space vehicle by means of a hybrid optimization technique. The approach, developed in this article, closely couples an evolutionary multi-objective algorithm with a ...
Aupoix B. +9 more
core +1 more source