Essa

Essa may refer to:

ESSA as an acronym may refer to:

See also

Essaï Altounian

Essaï Altounian (Armenian: Եսայի Ալթունյան, in Western Armenian Եսայի Ալթունեան) born 5 November 1980), sometimes credited as simply Essaï, is a French-Armenian singer, songwriter, keyboardist, music producer and an actor.

Biography

Essaï Altounian is a French-Armenian singer, songwriter, keyboardist, music producer and an actor. Being of Armenian origin Essai lived and debuted in France. His grandparents escaped from Kharpet during the Armenian Genocide. At the age of 5 his grandfather Nechane escaped from Der zor desert after his mother and sisters were killed in front of him. He walked alone in the desert when some Bedouins found him crying and decided to keep him. At the age of 18 he met a cousin in a market by chance and moved to France to live with his other cousins that survived. In France he met Essai’s grandmother, learned French and worked hard for his family. Essaï grew up listening to the stories about the Armenian Genocide and his grandfather even wrote a book to never forget what happened to him and to the Armenian people in 1915. The book is called “The Child of the Desert”.

ESSA-9

ESSA-9, also known as TOS-G, was a meteorological satellite. ESSA-9 replaced the ESSA-7 satellite.

Launch & orbit

The ESSA-9 was launched on a three stage Delta rocket from Cape Canaveral, Florida. The launch occurred at 07:47 UTC (02:47 EDT) on 26 February 1969. The spacecraft was placed in a sun-synchronous orbit of 101.4° inclination. Immediately after launch ESSA-9 had a perigee of 1,427.0 kilometers (886.7 mi) and an apogee of 1,508.0 kilometers (937.0 mi), giving it an orbital period of 115.2 minutes, or a mean motion of 12.5 orbits per day.

Spacecraft

The ESSA-9 spacecraft was similar to the TIROS series of satellites, having an 18-sided polygonal shape that measured 42 inches (110 cm) in diameter and 22 inches (56 cm) high. It weighed 320 pounds (150 kg). The body of the ESSA-9 was made of aluminum alloy and stainless steel. The shell of the craft was covered with 10,020 solar cells. The solar cells recharged the 63 nickel–cadmium batteries during the time the spacecraft was in sunlight. The ESSA-9 employed the same cartwheel-style stabilization as the TIROS-9 satellite. The satellite used a Magnetic Attitude Spin Coil (MASC) to control its attitude while in orbit. The magnetic field induced by the MASC's current interacted with the earth's magnetic field to provide the torque necessary to maintain a desired spin rate of 9.225 rpm.

Strut

A strut is a structural component designed to resist longitudinal compression. Struts provide outwards-facing support in their lengthwise direction, which can be used to keep two other components separate, performing the opposite function of a tie. They are commonly used in architecture and engineering.

Automobiles

As components of an automobile chassis, struts can be passive braces to reinforce the chassis and/or body, or active components of the suspension. An automotive suspension strut combines the primary function of a shock absorber (as a damper), with the ability to support sideways loads not along its axis of compression, somewhat similar to a sliding pillar suspension, thus eliminating the need for an upper suspension arm. This means that a strut must have a more rugged design, with mounting points near its middle for attachment of such loads.

The most common form of strut in an automobile is the MacPherson strut. MacPherson struts are often purchased by the automakers in sets of four completed sub-assemblies: These can be mounted on the car bodies as part of the manufacturers' own assembly operations. The MacPherson strut combines a shock absorber and a spring in a single unit, by means of which each wheel is attached to the car body.

Strut (Lenny Kravitz song)

"Strut" is the title song of Lenny Kravitz' 2014 same-titled album Strut.

Charts

References

Strut (typesetting)

In typesetting, a strut is an invisible character or element, used to ensure that a text has a minimum height and depth, even if no other elements are included.

For example, LaTeX and plainTeX provide the command

to insert a font size specific strut. In LaTeX it has a height of 70% of the baseline skip (the distance between the baselines of two consecutive lines of text) and a depth of 30% of the baseline skip. It ensures that two vertical stacked boxes which include such a strut have the same distance like two normal consecutive lines. LaTeX also supports the creation of general struts using the command:

where \strut is equivalent in size to \rule[-.3\baselineskip]{0pt}{\baselineskip}.

References