Standard deviation of vertical wind shear in the lower atmosphere
Determination of standard deviation of vertical wind shear in lower atmosphere
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Determination of standard deviation of vertical wind shear in lower atmosphere
Flight-measured base pressures from sharp leading edge upper vertical fin of X-15 aircraft compared with wind tunnel data for turbulent flow at Mach numbers from 1.5 to 5.0
Transonic wind tunnel tests of vertical fin loads and rudder hinge moments on M2-F3 lifting body scale model at Mach 0.50 to 1.30
Forced flow heat transfer coefficients for laminar film boiling interface on vertical surface
Interpretation of vertical wave patterns in winter atmosphere at high latitudes in terms of gravity waves theory
Low speed wind tunnel tests on effects of vertical tail and geometry on directional stability of orbital space shuttle model
Vertical momentum transport over mountainous terrain based on Apollo 9 cloud photographs, gravity waves, and wind data for southwestern US
Oceanic rise crest heat flow model, examining vertical velocity distribution of mass transport
Vertical and horizontal atmospheric electric fields measurements at balloon altitudes, considering magnetospheric processes effect and potential differences
Vertical air motions measurement by balloon radar tracking, discussing method of radar noise error reduction by ascent rate smoothing technique
IR scanning vertical temperature profile radiometer for Itos meteorological satellites, describing electronic signal processing
Buoyancy effects on heat transfer coefficients in liquid nitrogen film boiling in vertical flow
Stability characteristics and general transient motion of vertical finite width three lobe journal bearing, assuming incompressible fluid with cavitation
Forced flow laminar film boiling heat transfer coefficients from vertical surface in terms of interfacial shear at liquid-vapor interface
A flush-mounted microphone on the vertical fin of an X-15 airplane was used to investigate boundary layer transition phenomenon during flights to peak altitudes of approximately 70,000 meters. The flight results were compared with those from wind tunnel studies, skin temperature measurements, and empirical prediction data. The Reynolds numbers determined for the end of transition were consistent with those obtained from wind tunnel studies. Maximum surface-pressure-fluctuation coefficients in the transition region were about an order of magnitude greater than those for fully developed turbulent flow. This was also consistent with wind tunnel data. It was also noted that the power-spectral-density estimates of the surface-pressure fluctuations were characterized by a shift in power from high frequencies to low frequencies as the boundary layer changed from turbulent to laminar flow. Large changes in power at the lowest frequencies appeared to mark the beginning of transition.
Results are presented of a wind tunnel test on the directional stability of space shuttle booster configurations. The test was conducted at the 14-inch trisonic tunnel starting 6 December 1971 and continued through 11 December 1971 for a total of 66 occupancy hours. Configurations tested included a cylindrical body with two axisymmetrical noses, one with and without canopy, one delta wing, located in two positions, five vertical tails (including a V tail), two having split rudders, ventral fins, two sets of chines, three airbreathing engine pods, and rocket engine shrouds. The model scale was 0.003366.
The diurnal variations of the critical frequencies of the ionospheric F2 region may be influenced substantially by the 12-hour component of the vertical drift of small-scale ionization inhomogeneities. The appearance of the forenoon maximum of F2 and the evening ionization maximum are examined.
The necessity of obtaining soundings of temperature and water vapor content of the lower troposphere with sufficient vertical resolution to determine the exchange of heat and moisture between the surface and the atmosphere is discussed. The means for solving the problem will be emission measurements in the high frequency end of the thermal infrared. The means for solving another problem is supplementary scanning with high area resolution.