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It's not. By your use of the term "center of pressure" I'll make a guess that you're talking about model rocketry. In that case, the center of pressure can be above or below the center of gravity, but you must make it lower in order to make your rocket stable.
When a rocket in flight is tipped - say by a gust of wind or some such - it rotates about its center of gravity. (This actually is true of any object in mid air or space, not supported by an outside force.) When the rocket is moving straight along its central axis the fins are not really doing anything. But when the rocket is tipped and its velocity vector is not along its axis, then the fins generate a lateral force, which acts through the center of pressure. (That's what "center of pressure" means.) Now, if the center of pressure is above the center of gravity then the force that the fins apply will make the rocket tip further, and the rocket is unstable. If the center of pressure is below the center of gravity then the force from the fins straightens the rocket out, and the rocket is stable.
This is much easier to explain with pictures. See the related link for a fully illustrated explanation.
What else can I help you with?
Why the center of pressure is below the center of gravity for an inclined surface?
I'm going to guess it's for easier guidance. If center of pressure were above CG, you'd blast your rocket so that's out, we're not pulling here, we're pushing. If CP is below but too close to CG, you would have a balancing issue. Try to balance a tall object such as a broom on your hand. It's much easier to do than balancing a short object such as a pen. Easier to correct and stay under CG, with more distance.
Applications of center of pressure?
As the intensity of pressure increases with depth so for an inclined surface CP is bellow CG. Center of gravity : a point from which the weight of a body or system may be considered to act. In uniform gravity it is the same as the center of mass.
What is the center of gravity for an airplane?
The center of gravity (or CG) depends on the particular type of aircraft due to each type having different overall size characteristics. Aircraft have lateral CG's, Longitudinal CG's, and even Vertical CG's. Each has to be taken into consideration, but the Longitudinal CG (Forward and Aft) is the most important. The aircrafts center of lift is where this CG is located. There is a Forward CG limit, and an Aft CG limit. Depending on the flight characteristics of the type of aircraft, your CG window could be bigger, or smaller.
How should the center of gravity and center of pressure be aligned on a rocket?
The center of gravity (CG) should be located slightly forward of the center of pressure (CP) to ensure stable flight. This is known as having a positive stability margin. The specific distance will vary depending on the rocket design and intended flight characteristics.
How many cg in 16 hg?
160,000 cg, algebraic steps below: 16 hg*10000 cg 1 hg=160,000 cg
What is the relationship between the metacentre and the position of the center of gravity?
The metacentre is a point in a floating body where the buoyant force acts when the body is tilted, and it is crucial for stability. The position of the center of gravity (CG) impacts stability; when the CG is below the metacentre (M), the object is stable, while if the CG is above M, the object may become unstable and capsize. In essence, the relationship between the metacentre and the center of gravity determines the stability of a floating body.
What is CG?
CG can stand for Center of Gravity, for computer graphics, or Cover Girl, among many possibilities..
What determines the longitudinal stability of an airplane?
The longitudinal stability of an airplane is primarily determined by the location of the center of gravity (CG) in relation to the aerodynamic center of the wing. If the CG is in front of the aerodynamic center, the airplane tends to be stable. If the CG is too far behind the aerodynamic center, the airplane can become unstable. Pilots use the elevator control surface to adjust the pitch and maintain longitudinal stability.
Whats CG mean in bowling?
In bowling, CG stands for Center of Gravity and is the area of a bowling ball that is the heaviest.
What does cg stand for?
CG Coast Guard Governmental » Military CG Computer Graphics CG Congo CG Control Group CG Computer Generated CG Conjugate Gradient CG Card Game CG Commanding General CG Computer Graphic CG Center of Gravity CG Ciba Geigy CG Curious George CG Current Generation CG Character Generator CG Console Games CG Computer Gaming CG Cloud To Ground CG Commercial Grade CG Chorionic Gonadotrophin CG Cell Group CG Cute Girl CG Cool Guy CG Contact Group CG Central Galaxy CG Creative Genius
Abbreviation of the center of gravity?
C/G or Cg
Where is the center of gravity in a paper airplane?
the CG is where you can balance it on you finger
