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The nearest warships, which were under the command of Commander F. C. McCune, were part of Task Force 60.7 (TF60.7). The escort group consisted of destroyer USS Ericsson (Lt.Cdr CA Baldwin), destroyer escorts USS Amick (Lt.Cdr EL Barsumian) and Atherton (Lt.Cdr L Iselin ), and frigate USS Moberly (Lt.Cdr Tollaksen CG ).
[2] Today, 8th Communication Battalion is composed of close to one thousand Marines and Sailors and employs over thirteen thousand end items valued at nearly $200 million. Its mission is to provide secure expeditionary communications to Marine Air Guard Task Force, Marine Component Headquarters, and other command elements to enable command and ...
Aspect ratio (aeronautics) An ASH 31 glider with very high aspect ratio (AR=33.5) and lift-to-drag ratio (L/D=56) In aeronautics, the aspect ratio of a wing is the ratio of its span to its mean chord. It is equal to the square of the wingspan divided by the wing area. Thus, a long, narrow wing has a high aspect ratio, whereas a short, wide wing ...
In a non-uniform field, gravitational effects such as potential energy, force, and torque can no longer be calculated using the center of mass alone. In particular, a non-uniform gravitational field can produce a torque on an object, even about an axis through the center of mass. The center of gravity seeks to explain this effect.
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The center of gravity (CG) of an aircraft is the point over which the aircraft would balance. [ 1] Its position is calculated after supporting the aircraft on at least two sets of weighing scales or load cells and noting the weight shown on each set of scales or load cells. The center of gravity affects the stability of the aircraft.
In aerodynamics, the critical Mach number ( Mcr or M*) of an aircraft is the lowest Mach number at which the airflow over some point of the aircraft reaches the speed of sound, but does not exceed it. [ 1] At the lower critical Mach number, airflow around the entire aircraft is subsonic. Supersonic aircraft such as the Concorde and combat ...
SI derived units are units of measurement derived from the seven SI base units specified by the International System of Units (SI). They can be expressed as a product (or ratio) of one or more of the base units, possibly scaled by an appropriate power of exponentiation (see: Buckingham π theorem ). Some are dimensionless, as when the units ...