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  1. Wikipedia
    https://en.wikipedia.org › wiki › Delta_IV

    Delta IV - Wikipedia

    • Delta IV was a group of five expendable launch systems in the Delta rocket family. It flew 45 missions from 2002 to 2024. Originally designed by Boeing's Defense, Space and Security division for the Evolved Expendable Launch Vehicle (EELV) program, the Delta IV became a United Launch Alliance (ULA) product in 2006. The Delta IV was primarily a lau… See more

    History

    The latest evolutionary development of the Delta rocket family, Delta IV was introduced to meet the requirements of the … See more

    Delta IV Medium

    The Delta IV Medium (also referred to as 'single stick' ) was available in four configurations: Medium, Medium+ (4,2), Medium+ (5,2), and Medium+ (5,4).
    The Delta IV Medium (Delta 9040) was the most basic … See more

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    FunctionOrbital launch vehicle
    ManufacturerUnited Launch Alliance
    Country of originUnited States
    Cost per launchUS$164+ million
    The Ultimate Spy Rocket
    The Ultimate Spy Rocket
    Delta IV is a group of five expendable launch systems in the Delta rocket family. They were designed by Boeing for the Evolved Expendable Launch Vehicle program, and are now operated by United Launch Alliance.
    Delta IV Heavy

    The Delta IV Heavy (Delta 9250H) combines a 5 m (16 ft) diameter DCSS and payload fairing with two additional CBCs. These are strap-on boosters which are separated earlier in the flight than the center CBC. As o… See more

    Vehicle description

    Each Delta IV consists of at least one Common Booster Core (CBC). Each CBC is powered by one Aerojet Rocketdyne RS-68 engine, which burns liquid hydrogen and liquid oxygen.
    On flights o… See more

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    History
    Delta IV Medium
    Quick Facts
    Delta IV Heavy
    Vehicle description
    Launch history
    See also
     
  1. [ edit on Wikidata] Delta IV was a group of five expendable launch systems in the Delta rocket family. It flew 45 missions from 2002 to 2024. Originally designed by Boeing 's Defense, Space and Security division for the Evolved Expendable Launch Vehicle (EELV) program, the Delta IV became a United Launch Alliance (ULA) product in 2006.

    Delta IV - Wikipedia

    en.wikipedia.org/wiki/Delta_IV
    American orbital launch vehicle. Originally designed and manufactured by Boeing and later Boeing/United Launch Alliance. The Delta IV Heavy is comprised of three single-engine common booster cores using liquid oxygen and liquid hydrogen, two of which are used as liquid boosters, with the third functioning as the first stage of the rocket.

    delta4heavy - NASA

    sma.nasa.gov/LaunchVehicle/delta4heavy.html
    The Delta IV line of rockets were developed by Boeing. The program was later transferred to United Launch Alliance. The Delta IV Heavy was the most powerful member of the line, which also includes the smaller Delta IV Medium.

    Delta IV Heavy - Wikipedia

    en.wikipedia.org/wiki/Delta_IV_Heavy
    The Delta IV was developed in the 90s by then Boeing to compete in the Air Force’s Evolved Expendable Launch Vehicle program. This program was designed to replace the aging Delta II, Atlas II, and Titan IV rockets currently launching government payloads with cheaper and more reliable options.

    Why is ULA retiring the Delta IV Heavy? …

    spaceexplored.com/2024/04/09/why-is-ula-retiring-t…
  2. People also ask
    What is the last Delta IV Heavy rocket?
    United Launch Alliance's final Delta IV Heavy rocket, seen here in December when ground crews rolled it to the launch pad at Cape Canaveral Space Force Station, Florida. Credit: United Launch Alliance This is the rocket that literally lights itself on fire before it heads to space.

    The Delta IV Heavy, a rocket whose time has come and gone, will fly

    arstechnica.com
    When did the Delta IV Heavy launch?
    The Delta IV Heavy, one of the world's most powerful rockets, launched for the 16th and final time Tuesday. It was the 45th and last flight of a Delta IV launcher and the final rocket named Delta to ever launch, ending a string of 389 missions dating back to 1960.

    After a fiery finale, the Delta rocket family now belongs to history

    arstechnica.com
    What did the Delta IV Heavy rocket do?
    Dedication. The Delta IV Heavy rocket was the pinnacle in the Delta family evolution. The Delta IV Heavy rocket was a workhorse for the National Reconnaissance Office (NRO) launching 12 missions delivering critical national security payloads.

    Delta IV - United Launch Alliance

    ulalaunch.com
    Who invented the Delta IV rocket?
    The Delta IV line of rockets were developed by Boeing. The program was later transferred to United Launch Alliance. The Delta IV Heavy was the most powerful member of the line, which also includes the smaller Delta IV Medium.

    Delta IV Heavy - Wikipedia

    en.wikipedia.org
    What is a Delta IV launch system?
    The Delta IV launch system was available in three configurations: the Delta IV Medium+, with two or four solid rocket motors (SRMs) and the Delta IV Heavy. Each configuration was comprised of a common booster core (CBC), a cryogenic upper stage and a 5-meter-diameter payload fairing (PLF).

    Delta IV - United Launch Alliance

    ulalaunch.com
    What does a Delta IV rocket look like when it launches?
    When it does launch, it will look as if it is catching on fire, with flames racing up the sides. That is by design. Fiery scenes from a Sept. 24, 2022, liftoff of a Delta IV Heavy rocket.

    Delta IV Heavy Launch: An Updated Finale for a Rocket That Brings the

    nytimes.com
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  3. ULA | United Launch Alliance
    https://www.ulalaunch.com › rockets › d…

    Delta IV - United Launch Alliance

    Delta IV was a workhorse for national security and NASA missions, with three configurations and a 5-meter-diameter payload fairing. Learn about its performance, propulsion, payload fairings and history, and see photos and …

  4. Wikipedia
    https://en.wikipedia.org › wiki › Delta_(rocket_family)

    Delta (rocket family) - Wikipedia

  5. Ars Technica
    https://arstechnica.com › space › the-delta-iv...

    The Delta IV Heavy, a rocket whose time has come and gone, will …

  6. Space.com
    https://www.space.com

    'Heavy' history: ULA launches final Delta rocket after 64 …

    Apr 9, 2024 · United Launch Alliance (ULA) ignited its last Delta IV Heavy rocket to launch NROL-70, a classified payload for the U.S. National Reconnaissance Office (NRO).

  7. Ars Technica
    https://arstechnica.com › space › after-a...

    After a fiery finale, the Delta rocket family now belongs to history

  8. New York Times
    https://www.nytimes.com › science › delta...

    Delta IV Heavy Launch: An Updated Finale for a Rocket That Brings …

  9. Space.com
    https://www.space.com

    Delta IV Heavy rocket launches US spy satellite on …

    Jun 20, 2023 · United Launch Alliance's (ULA) powerful Delta IV Heavy rocket flew for the second-to-last time early Thursday morning (June 22). The Delta IV Heavy lifted off from Florida's Cape...

  10. Space Foundation
    https://www.spacefoundation.org › ula...

    ULA Delta IV Heavy Launches into History with …

    Apr 10, 2024 · The retirement of the Delta IV Heavy marks a transition to ULA’s new Vulcan rocket, which successfully completed its inaugural mission earlier this year, signaling the continuous evolution of space exploration technology.