[permalink] [id link]
At low speeds, the compressibility of air is not significant in relation to aircraft design, but as the airflow nears and exceeds the speed of sound, a host of new aerodynamic effects become important in the design of aircraft.
from
Wikipedia
Some Related Sentences
At and low
At another phase in the therapy, when a pathogenic mother-introject began to emerge more and more upon the investigative scene, she muttered in a low but intense voice, to herself, `` I hate that woman inside me ''!!
At low thicknesses a cutting ( or shearing ) phenomenon is often encountered.
At the start of a new industrial age in the 18th century, it was believed that " people are the riches of the nation ", and there was a general faith in an economy that paid its workers low wages because high wages meant workers would work less.
At very low temperatures in the vicinity of absolute zero, matter exhibits many unusual properties, including superconductivity, superfluidity, and Bose – Einstein condensation.
At the time, Abd al-Rahman and Bedr were keeping a low profile, staying in Kabylia, at the camp of a Nafza Berber chieftain friendly to their plight.
At a pre-determined point on the missile's trajectory, the payload separates from the missile and deploys a parachute to permit splashdown and water entry at a low speed and with minimum detectable noise.
At the same time annual inflation in the economy was variable and during the last five years ( 2003 – 2007 ) has seen a low of 2. 3 % and high of 7. 3 %.
At this time the games tended to be low scoring, dominated by such pitchers as Walter Johnson, Cy Young, Christy Mathewson, and Grover Cleveland Alexander to the extent that the period 1900 – 1919 is commonly called the " Dead-ball era ".
At sufficiently low temperatures, electrons near the Fermi surface become unstable against the formation of Cooper pairs.
At low refresh rates ( below 50 Hz ), the periodic scanning of the display may produce an irritating flicker that some people perceive more easily than others, especially when viewed with peripheral vision.
At low pressure, there was enough space between the gas atoms that the ions could accelerate to high enough speeds that when they struck another atom they knocked electrons off of it, creating more positive ions and free electrons in a chain reaction.
At Woodside the old station buildings still stand disused, and the original platforms have been replaced by accessible low platforms.
At low volumes, producing a good crash from a cymbal not particularly suited to it is a highly skilled art.
At low tide, the West Winner sandbank is visible, extending a mile out to sea.
At the protein level, the halophilic species are characterized by low hydrophobicity, overrepresentation of acidic residues, underrepresentation of Cys, lower propensities for helix formation and higher propensities for coil structure.
At very low temperatures, honey will not freeze solid.
At our trading houses, too, we mean to sell so low as merely to repay us cost and charges, so as neither to lessen or enlarge our capital.
At night the F layer is the only layer of significant ionization present, while the ionization in the E and D layers is extremely low.
At too low temperature, most LC materials will form a conventional crystal.
At very low amphiphile concentration, the molecules will be dispersed randomly without any ordering.
At slightly higher ( but still low ) concentration, amphiphilic molecules will spontaneously assemble into micelles or vesicles.
At low concentrations blocks the pR promoter ( preventing cro production ).
At low velocities the fluid tends to flow without lateral mixing, and adjacent layers slide past one another like playing cards.
At low tide it is possible to walk across the sands following an ancient route known as Pilgrims ' Way.
At and speeds
At these lower speeds, ATM provides a useful ability to carry multiple logical circuits on a single physical or virtual medium, although other techniques exist, such as Multi-link PPP and Ethernet VLANs, which are optional in VDSL implementations.
At high speeds the ailerons could apply more torque than the Spitfire's thin wings could handle, and the entire wing would twist in the opposite direction.
At higher speeds the pilot simply couldn't move the controls because there was too much airflow over the control surfaces.
At some speeds the airflow over the control surfaces will become turbulent, and the controls will start to flutter.
At lower speeds this air has time to " get out of the way ", guided by the air in front of it that is in contact with the aircraft.
At higher speeds, the drag off toed-in rail fins can cause surfboards to oscillate and become unstable-a phenomenon known as " speed wobbles
At release, a javelin can reach speeds approaching 113 km / h ( 70 mph ).
At slow speeds, a diesel-electric prime mover can potentially produce more power than can be usefully used by its own traction motors ; a slug increases the number of traction motors available to use the power more effectively.
At higher speeds, such as in ballistics, the shape is highly distorted and does not resemble a parabola.
At the end of the motor shaft there was a stepped driving capstan ; to obtain different speeds, the rubber idler wheel was moved to contact different steps of this capstan.
At high speeds ( FF / REW ), the VITC is often unreadable due to image distortions, so the LTC is often used instead.
At high-subsonic flight speeds, supersonic airflow can develop in areas where the flow accelerates around the aircraft body and wings.
At speeds higher than 9600 baud, owners discovered that the serial ports of the computers were not able to handle a continuous flow of data without losing characters.
At high speeds, the plasma wind's direction will seem to come increasingly from the front of the spacecraft.
At low speeds:
At distances of ~ 94 AU from the Sun, the solar wind undergoes a transition, called the termination shock, from supersonic to subsonic speeds.
At speeds comparable to the speed of light, the second law holds in the original form F = dp / dt, where F and p are four-vectors.
At the end of the 1960s, Vee Beetle engine output on a single carburetor would reach up to 70 BHP ; top speeds would gradually rise to nearly.
At ARCNET's lower speeds (), Cat-3 cable is good enough to run ARCNET.
At the site of the turbines, a solar-powered kiosk provides information for visitors, including current information on wind speeds and the amount of energy being produced by the turbines.
At the end of 1960s, the nuclear threat became unstoppable with the addition of various ballistic missiles which could not be intercepted approaching from outside of atmosphere with speeds as high as 5 – 7 km / s.
At the slowest speeds the dance tends to exhibit a highly elastic connection with the possibility of very sexy, " slinky " walks for the lady, and a slight backward leaning poise at the full extent of the connection.
At faster speeds the partners become more upright and the connection shortens with more of a " push and pull " feel and look.
1.016 seconds.