delta-v
Sign in to saveAlso known as Δv, DeltaV, change in velocity
'Delta-v''''' (also known as "change in velocity"), symbolized as {\Delta v} and pronounced , as used in spacecraft flight dynamics, is a measure of the impulse per unit of spacecraft mass that is needed to perform a maneuver such as launching from or landing on a planet or moon, or an in-space orbital maneuver. It is a scalar that has the units of speed. As used in this context, it is not the same as the physical change in velocity of said spacecraft.
In the Vinony graph
Within Vinony's link graph, delta-v is referenced by 333 other articles, and connects out to Lagrangian point, orbital inclination and gravity assist.
It is catalogued under topics including Astrodynamics, Physical quantities and Spacecraft propulsion.
Its subject is documented across 24 Wikipedia language editions.
Wikidata facts
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- recommended unit of measurement
- metre per second
Sources (1)
via Wikidata · CC0
~11 min read
Encyclopedic overview
12 sectionsContents
- Definition
- Specific cases
- Orbital maneuvers
- Production
- Multiple maneuvers
- Delta-''v'' budgets
- Oberth effect
- Porkchop plot
- <span class="anchor" id="Delta-vs around the Solar System"></span><!-- This section is linked from [[Spacecraft propulsion]] --> Around the Solar System
- LEO reentry
- See also
- References
'Delta-v''''' (also known as "change in velocity"), symbolized as {\Delta v} and pronounced , as used in spacecraft flight dynamics, is a measure of the impulse per unit of spacecraft mass that is needed to perform a maneuver such as launching from or landing on a planet or moon, or an in-space orbital maneuver. It is a scalar that has the units of speed. As used in this context, it is not the same as the physical change in velocity of said spacecraft.
A simple example might be the case of a conventional rocket-propelled spacecraft, which achieves thrust by burning fuel. Such a spacecraft's delta-v, then, would be the change in velocity that spacecraft can achieve by burning its entire fuel load.
Excerpted from Wikipedia’s “delta-v” article, available under the CC BY-SA 4.0 licence.