344 research outputs found
Drag Measurements at High Reynolds Numbers of a 100-Inch-Chord NACA 23016 Practical Construction Wing Section Submitted by Chance Vought Aircraft Company
Particle acceleration due to shocks in the interplanetary field: High time resolution data and simulation results
Data were examined from two experiments aboard the Explorer 50 (IMP 8) spacecraft. The Johns Hopkins University/Applied Lab Charged Particle Measurement Experiment (CPME) provides 10.12 second resolution ion and electron count rates as well as 5.5 minute or longer averages of the same, with data sampled in the ecliptic plane. The high time resolution of the data allows for an explicit, point by point, merging of the magnetic field and particle data and thus a close examination of the pre- and post-shock conditions and particle fluxes associated with large angle oblique shocks in the interplanetary field. A computer simulation has been developed wherein sample particle trajectories, taken from observed fluxes, are allowed to interact with a planar shock either forward or backward in time. One event, the 1974 Day 312 shock, is examined in detail
High-temperature signatures of quantum criticality in heavy fermion systems
We propose a new criterion for distinguishing the Hertz-Millis (HM) and the
local quantum critical (LQC) mechanism in heavy fermion systems with a magnetic
quantum phase transition (QPT). The criterion is based on our finding that the
spin screening of Kondo ions can be completely suppressed by the RKKY coupling
to the surrounding magnetic ions even without magnetic ordering and that,
consequently, the signature of this suppression can be observed in
spectroscopic measurements above the magnetic ordering temperature. We apply
the criterion to high-resolution photoemission (UPS) measurements on
CeCuAu and conclude that the QPT in this system is dominated by
the LQC scenario.Comment: Inveted paper, International Conference on Magnetism, ICM 2009,
Karlsruhe. Published version, added discussions of the relevance of
Fermi-surface fluctuations and of a structural transition near the QC
Two-dimensional Wind-tunnel Investigation at High Reynolds Numbers of Two Symmetrical Circular-arc Airfoil Sections with High-lift Devices
A method for predicting the low speed chordwise pressure distribution over sharp edge airfoil sections with plain flaps at the leading and trailing edges
Two-dimensional wind-tunnel investigation at high Reynolds numbers of an NACA 65A006 airfoil with high-lift devices
Aerodynamic Load Measurements over a Leading-edge Slat on a 40 Degree Sweptback Wing at Mach Numbers from 0.10 to 0.91
Two-dimensional Wind-tunnel Investigation of a 6-percent-thick Symmetrical Circular-arc Airfoil Section with Leading-edge and Trailing-edge High-lift Devices Deflected in Combination
Two-dimensional wind tunnel investigation of a symmetrical airfoil section with a sealed internally balanced control surface and a leading tab
Exploratory Wind-tunnel Investigation of the Effectiveness of Area Suction in Eliminating Leading-edge Separation over an NACA 641A212 Airfoil
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