• Delta-v (also known as "change in velocity"), symbolized as Δ v {\textstyle {\Delta v}} and pronounced /dɛltə viː/, as used in spacecraft flight dynamics...
    16 KB (2,194 words) - 20:05, 24 November 2024
  • Thumbnail for Delta-v budget
    a delta-v budget is an estimate of the total change in velocity (delta-v) required for a space mission. It is calculated as the sum of the delta-v required...
    25 KB (2,727 words) - 05:46, 23 January 2024
  • Delta Delta Delta (ΔΔΔ), also known as Tri Delta, is a women's fraternity and Greek life organization founded on November 27, 1888 at Boston University...
    30 KB (3,280 words) - 00:00, 23 November 2024
  • Delta-v is a term used in astrodynamics for the total 'effort' to change from one space trajectory to another. Delta V may also refer to: Delta-V (Internet...
    1 KB (184 words) - 22:43, 21 February 2022
  • Thumbnail for Tsiolkovsky rocket equation
    vehicle, Δ v {\displaystyle \Delta v} (with no external forces acting) is: Δ v = v e ln ⁡ m 0 m f = I sp g 0 ln ⁡ m 0 m f , {\displaystyle \Delta v=v_{\text{e}}\ln...
    25 KB (4,354 words) - 07:21, 12 November 2024
  • Thumbnail for Hohmann transfer orbit
    lowest possible amount of impulse (which consumes a proportional amount of delta-v, and hence propellant) to accomplish the transfer, but requires a relatively...
    27 KB (3,626 words) - 18:17, 19 September 2024
  • focused on distributed authoring, and left versioning for the future. (The Delta-V extension added versioning later – see the Extensions section below.) The...
    19 KB (1,773 words) - 08:07, 12 November 2024
  • Thumbnail for Rocket
    in kg (or lb) v e {\displaystyle v_{e}} is the effective exhaust velocity in m/s (or ft/s) Δ v   {\displaystyle \Delta v\ } is the delta-v in m/s (or ft/s)...
    107 KB (11,398 words) - 08:05, 26 October 2024
  • Thumbnail for Bi-elliptic transfer
    from one orbit to another and may, in certain situations, require less delta-v than a Hohmann transfer maneuver. The bi-elliptic transfer consists of...
    15 KB (2,056 words) - 20:50, 7 July 2024
  • Thumbnail for First law of thermodynamics
    V {\displaystyle P~\Delta V} , of system pressure, P {\displaystyle P} , and system volume change, Δ V {\displaystyle \Delta V} , whereas − P   Δ V {\displaystyle...
    95 KB (13,988 words) - 21:35, 30 August 2024
  • Arkansas Delta Delta, Alabama Delta Junction, Alaska Delta, Colorado Delta, Illinois Delta, Iowa Delta, Kentucky Delta, Louisiana Delta, Missouri Delta, North...
    9 KB (1,138 words) - 18:03, 9 June 2024
  • Delta V is an Italian musical group formed in 1995. Its current line-up is composed of Carlo Bertotti, Flavio Ferri, Fefo Forconi and Francesca Tourè...
    6 KB (751 words) - 10:23, 8 January 2024
  • Delta V (pronounced as Delta Vee) is a first-person science fiction video game for MS-DOS, developed by Bethesda Softworks and released in 1994. It is...
    8 KB (853 words) - 08:45, 6 November 2024
  • δ V δ S ≈ V {\displaystyle S{\frac {\delta V}{\delta S}}\approx V} , therefore letting k = δ V δ S {\displaystyle k={\frac {\delta V}{\delta S}}} means...
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  • Thumbnail for Isobaric process
    = p Δ V {\displaystyle W=p\Delta V\,} . Applying the ideal gas law, this becomes W = n R Δ T {\displaystyle W=n\,R\,\Delta T} with R representing the...
    12 KB (1,891 words) - 13:11, 17 November 2024
  • Delta Air Lines is a major airline in the United States headquartered in Atlanta, Georgia. It is the United States' oldest operating airline and the seventh-oldest...
    92 KB (7,681 words) - 23:18, 17 November 2024
  • delta can be defined in 2 ways, symmetric delta and directed delta. A symmetric delta can be expressed as Δ ( v 1 , v 2 ) = ( v 1 ∖ v 2 ) ∪ ( v 2 ∖ v...
    13 KB (1,691 words) - 23:02, 9 November 2024
  • number is termed delta-v ( Δ v {\displaystyle \Delta v} ). If the exhaust velocity is constant then the total Δ v {\displaystyle \Delta v} of a vehicle can...
    20 KB (3,331 words) - 18:57, 14 January 2024
  • Thumbnail for Voltage
    V ( r A ) = − ∫ r 0 r B E ⋅ d ℓ − ( − ∫ r 0 r A E ⋅ d ℓ ) = − ∫ r A r B E ⋅ d ℓ {\displaystyle {\begin{aligned}\Delta V_{AB}&=V(\mathbf {r} _{B})-V(\mathbf...
    25 KB (2,926 words) - 19:56, 15 November 2024
  • velocity of each maneuver is referred to as delta-v ( Δ v {\displaystyle \Delta \mathbf {v} \,} ). The delta-v for all the expected maneuvers are estimated...
    17 KB (2,128 words) - 07:32, 20 October 2024
  • lowest required delta-v, to reach 100 km altitude, is about 1.4 km/s. Moving slower, with less free-fall, would require more delta-v.[citation needed]...
    32 KB (3,659 words) - 15:57, 22 November 2024
  • Thumbnail for Enthalpy
    Enthalpy (redirect from Delta h)
    {\displaystyle V_{\text{system, final}}} (as W = P ext Δ V {\displaystyle W=P_{\text{ext}}\Delta V} ), i.e. to make room for it by displacing its surroundings...
    48 KB (6,182 words) - 06:57, 5 November 2024
  • Thumbnail for Daniel Suarez (author)
    privatization of space, and is the second part of a trilogy that started with Delta-v (2019).[full citation needed] Critical Mass awarded Suarez his second Prometheus...
    8 KB (626 words) - 23:17, 6 November 2024
  • where Δ f = f − f 0 {\displaystyle \Delta f=f-f_{0}} Δ v = − ( v r − v s ) {\displaystyle \Delta v=-(v_{\text{r}}-v_{\text{s}})} is the opposite of the...
    34 KB (4,313 words) - 22:06, 4 November 2024
  • constant. Line Regulation = Δ V o Δ V i  ⋅ 100 % {\displaystyle {\text{Line Regulation}}={\frac {\Delta V_{\text{o}}}{\Delta V_{\text{i }}}}\cdot 100\%} where...
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  • The most commonly quoted are 25 delta put, 50 delta put/50 delta call, and 25 delta call. 50 Delta put and 50 Delta call are not quite identical, due...
    45 KB (5,557 words) - 07:58, 2 November 2024
  • Thumbnail for Geostationary transfer orbit
    follows: Δ V = V t , a 2 + V GEO 2 − 2 V t , a V GEO cos ⁡ Δ i , {\displaystyle \Delta V={\sqrt {V_{t,a}^{2}+V_{\text{GEO}}^{2}-2V_{t,a}V_{\text{GEO}}\cos...
    13 KB (1,801 words) - 19:57, 9 August 2024
  • P d T = L T Δ v = Δ s Δ v , {\displaystyle {\frac {\mathrm {d} P}{\mathrm {d} T}}={\frac {L}{T\,\Delta v}}={\frac {\Delta s}{\Delta v}},} where d P /...
    25 KB (3,651 words) - 04:27, 25 November 2024
  • In the case of a rocket, this means less propellant needed for a given delta-v, so that the vehicle attached to the engine can more efficiently gain altitude...
    27 KB (3,834 words) - 06:23, 23 November 2024
  • Delta Tau Delta (ΔΤΔ) is a United States–based international Greek letter college fraternity. Delta Tau Delta was founded at Bethany College, Bethany...
    26 KB (2,342 words) - 02:12, 18 November 2024