What is secant ogive?
A secant ogive is an ogive that tapers more gradually relative to its length than does the tangent ogive and touches the curve at two places, which provides a higher Ballistic Coefficient (BC) and less drag.
What is ogive in ballistics?
When applied to ballistics (or aerodynamics ) an ogive is a pointed/curved surface mainly used to form the approximately streamlined nose of a bullet or other projectile, reducing air resistance or the drag of air.
What is the difference between Secant and tangent ogive?
A Tangent Ogive (like our standard BTs) is less sensitive to seating depth but has more drag and a lower BC than a Secant Ogive of the same length. A Secant Ogive (like our standard VLDS) has a higher BC and lower drag than a traditional Tangent Ogive but can be quite sensitive to seating depth.
Is Secant line the same as tangent?
A secant line is a straight line joining two points on a function. A tangent line is a straight line that touches a function at only one point. (See above.) The tangent line represents the instantaneous rate of change of the function at that one point.
What is tangent vs Secant ogive?
Why is ogive called ogive?
Etymology. The earliest use of the word ogive is found in the 13th century sketchbook of Villard de Honnecourt, from Picardy in northern France. However, Merriam-Webster’s dictionary says it is from the “Middle English oggif stone comprising an arch, from Middle French augive, ogive diagonal arch”.
What is the slope of a secant line called?
The slope of the secant line is also referred to as the average rate of change of f over the interval [x,x+Δx].
What is the relationship between secant and tangent lines?
A secant line connects two points on a curve. The slope of a secant line is the average rate of change between two points on a curve. A tangent line touches one point. The slope of a tangent line is the instantaneous rate of change at a single point on a curve.
What is ogive radius?
The radius of the circle that forms the ogive is called the ogive radius and it is related to the length and base radius of the nose cone.
Where are ogives used?
The word Ogive is a term used in architecture to describe curves or curved shapes. Ogives are graphs that are used to estimate how many numbers lie below or above a particular variable or value in data.
What is the importance of an ogive?
An ogive graph is a plot used in statistics to show cumulative frequencies. It allows us to quickly estimate the number of observations that are less than or equal to a particular value.
What is the difference between a secant ogive and tangent ogive?
What is the difference between a Secant, Tangent, and Hybrid Ogive? A Tangent Ogive (like our standard BTs) is less sensitive to seating depth but has more drag and a lower BC than a Secant Ogive of the same length.
How do you find the ogive length of a secant?
The type of ogive, tangent or secant, must be known, and its radius. In the case of a secant bullet, the meplat diameter also must be known, as well as the ogive length. The ogive length is determined mathematically with a tangent radius.
How do you determine the length of a secant bullet?
In the case of a secant bullet, the meplat diameter also must be known, as well as the ogive length. The ogive length is determined mathematically with a tangent radius.
What is a hybrid ogive?
A Hybrid Ogive blends the best aspects of the tangent and secant nose shapes into one Ogive. It starts at the bearing surface with a tangent section that will align itself more effectively when the bullet contacts the rifling. Beyond this section, the shape transitions into a secant section which is proven to be more effective in the wind.
