Atmospheric drag
Atmospheric drag Atmospheric drag is a form of drag, which is the force that opposes ...
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Atmospheric reentry
Atmospheric reentry This article is about spaceflight and atmospheric reentry. For reentry in cardiac medicine, see ... MER) aeroshell, artistic rendition. The technology of atmospheric reentry was a consequence of the Cold ... practical there lacked an essential ingredient: an atmospheric reentry technology. In theory, the nation first ... stakes were so high that simply assuming atmospheric reentry's impossibility was unacceptable. Consequently ...
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Gravity drag
Gravity drag In astrodynamics, gravity drag (or gravity losses) is inefficiency encountered by ... increase can be reached with little gravity drag, while for $a$ only slightly ... more than $g$, the gravity drag is very large. For example, at the ... it at less than full capacity. Gravity drag can be described as the extra ...
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Drag equation
Drag equation In physics, the drag equation gives the drag experienced by an object moving through a ... math> where D is the force of drag, ρ is the density of the fluid ... reference area, and C d is the drag coefficient (a dimensionless constant, e.g. ...
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Drag (physics)
Drag (physics) An object falling through a gas ... motion. Terminal velocity is achieved when the drag force is equal to force of gravity ... object moving through a fluid or gas, drag is the sum of all the aerodynamic ... is overcome by thrust. Details Types of drag are generally divided into three categories: parasitic drag, lift-induced drag and wave drag. ...
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Difference between sub-orbital and orbital spaceflights
... placed in orbit at an altitude where drag from the atmosphere truly is negligible. A ... of ca. 7000 km above the surface. Atmospheric reentry a much bigger challenge with orbital flights Because of that speed difference, atmospheric reentry is much more difficult for orbital ... much as possible while still in higher atmospheric layers and avoid plunging downwards too quickly ... speeds has mainly been solved through using atmospheric drag itself to slow down. On ...
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Outer space
... or 120 km) marks the boundary where atmospheric drag becomes noticeable. Outer space within our solar ... almost no matter there to exert frictional drag. There is also increasing reliance, for both ... mm Hg; 14.5 lbf/in²) of atmospheric pressure 4.6 km (15,000 ft ... km (16,000 ft) - 50 kPa of atmospheric pressure 5.3 km (17,400 ...
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Talk:Lift (force)
... potential field. It is enough for lift, drag, etc. Simply the values will be off ... more easily measure the wing lift force, drag force and turning moment in order to ... wing performance, we will invariably measure lift, drag and moment directly. So where does Bernoulli ... and collected the test results for lift, drag etc. and they don't involve any ... refers to the "aerodynamic force" known as Drag.) In his book, Applied Hydro- and ...
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Talk:Difference between sub-orbital and orbital spaceflights
... object that orbits a larger object? Gravity drag on sub-orbital flights In this version ... following (emphasis mine): "Also, real flights experience atmospheric drag and gravity drag. For an orbital launch, these require an ... P3d0 20:40, 23 November 2005 (UTC) Atmospheric drag when ascending requires extra effort ...
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Talk:Orbital airship
... they did not have to worry about atmospheric drag. Also, it seemed strange that they are ... just simply allocate a percent of the drag to lift), and it doesn't take into account the change in atmospheric composition in high altitudes (for example, you ... and envelope (kg) C=0.015 #Numerical drag coefficient (horizontal motion) C2=0.04 # ...
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