- published: 26 Mar 2013
- views: 49035
X1 or X-1 may refer to:
The sound barrier, in aerodynamics, is the point at which an aircraft moves from transonic to supersonic speed. The term, which occasionally has other meanings, came into use during World War II, when a number of aircraft started to encounter the effects of compressibility, a collection of several unrelated aerodynamic effects that "struck" their planes like an impediment to further acceleration. By the 1950s, new aircraft designs routinely "broke" the sound barrier.
Some common whips such as the bullwhip or sparewhip are able to move faster than sound: the tip of the whip breaks the sound barrier and causes a sharp crack—literally a sonic boom.Firearms since the 19th century have generally had a supersonic muzzle velocity.
The sound barrier may have been first breached in nature some 150 million years ago. Some paleobiologists report that, based on computer models of their biomechanical capabilities, certain long-tailed dinosaurs such as Apatosaurus and Diplodocus may have possessed the ability to flick their tails at supersonic velocities, possibly used to generate an intimidating booming sound. This finding is theoretical and disputed by others in the field. Meteorites entering the Earth's atmosphere usually, if not always, descend faster than sound.
Charles Elwood "Chuck" Yeager ( /ˈjeɪɡər/; born February 13, 1923) is a retired major general in the United States Air Force and noted test pilot. He was the first pilot to travel faster than sound (1947). Originally retiring in 1975 as a brigadier general, Yeager was promoted to major general on the Air Force's retired list in 2005 for his military achievements.
His career began in World War II as a private in the United States Army Air Forces. After serving as an aircraft mechanic, in September 1942 he entered enlisted pilot training and upon graduation was promoted to the rank of flight officer (the World War II USAAF equivalent to warrant officer) and became a North American P-51 Mustang fighter pilot.
After the war he became a test pilot of many kinds of aircraft and rocket planes. Yeager was the first man to break the sound barrier on October 14, 1947, flying the experimental Bell X-1 at Mach 1 at an altitude of 45,000 ft (13,700 m). Although Scott Crossfield was the first man to fly faster than Mach 2 in 1953, Yeager shortly thereafter set a new record of Mach 2.44.
Ahh they shouldnt a done this right here
March now step now march now step (yeah)
March now step now march now step (blueberry still connect)
March now step now march now step
March now step now march now step
You gotta march like a soldier
Walk it how you talk it
Play it how you say it and stop acting on that hard shit
Stripes on my back is what ya boy go to war wit
Never been faking or fronting or on that fraud shit
You gotta march like a soldier (now on my block we just march)
You gotta walk it like you talk it (we got the lil mamas dipping)
You gotta march like a soldier (now on my block we just march)
You gotta walk it like you talk it (we got the lil mamas dipping)
I'm grinding
I'm posted up on the block like a stop sign
Raised off of instinct with a mind like Einstein
I'm a certified hustler and a G
Trying to metamorphasize a hundred two a hundred three
I'm chasing after currency and accumulating green
With the heart of a lion, I'm on the grind like a dope fien
I've got the street smarts of Avon Barksdale
I took a couple hits but I'm still flowing like blood cells
My money's empidemic, it multiply fast
I'm grinding in the cut like a piece of broken glass
Addicted to the hustle allergic to being broke
Never falling off cuz I stay on my note
You gotta march like a soldier (now all my hot boys march)
You gotta walk it like you talk it (we got the hot girls dipping)
You gotta march like a soldier (now all my hot boys march)
You gotta walk it like you talk it (we got the hot girls dipping)
Ay, get off my dick, Hollygroove Weezy
Young money billionaire, Hermes winter ware
I'm trying to get somewhere like I ain't never been no where
They probably suffocate trying to breathe this endo air
Halt who goes there, nigga I live there
I run on top of water, I walk on thin air
I ride around with a MAC10 squared
Thats a pair of semi-automatic shootin everywhere
I dont care if authority come by here
They get it just like them niggaz who ain't from by here
Yeah, and I'm extra bout it
If I get in beef I do something about it before I get out
Yeah, Lil Wayne never dropped the Lil
I gave Paul a hundred thousand for my grill
Yeah, I'm so New Orleans that I can't hide
You know I'm cutting something I'm spittin for Roc? side, Weezy
You gotta march like a soldier (now all my dope boys march)
You gotta walk it like you talk it (we got the dope girls dipping)
You gotta march like a soldier (now all my dope boys march)
You gotta walk it like you talk it (we got the dope girls dipping)
I ain't never had a hand, I ain't never been a beggar
On the grind like a bootlegger, I'm a go getter
I'm Bobby Fischer on the mic making chess moves
This suckers playin checkers simply destined to lose
The Martha Stewart made it blind
See the chains bump ends
Me and a couple lady friends blowing piff in the wind
I got the wrist ware, smooth and sleek
Nothing but ??
You ain't never saw a watch like this so go ahead and take a peek
I'm massive in the streets like a diesel truck
Endulging in that purple stuff gettin full of that puff puff
Tote the iron, I'm double dutch
I'm ice water up in the clutch
Place your bet, Ill call ya bluff
Paul Wall baby thats whats up
You gotta march like a soldier (now all my dope boys march)
You gotta walk it like you talk it (we got the dope girls dipping)
You gotta march like a soldier (now all my dope boys march)