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  2. There's no Delta-specific booster coming to save you - AOL

    www.aol.com/news/theres-no-delta-specific...

    While the Delta variant is dominant worldwide, existing vaccines work well against it. So there's no need for a variant-specific booster, experts say. There's no Delta-specific booster coming to ...

  3. Booster (rocketry) - Wikipedia

    en.wikipedia.org/wiki/Booster_(rocketry)

    A GEM-40 strap-on booster for a Delta II launch vehicle. A booster is a rocket (or rocket engine) used either in the first stage of a multistage launch vehicle or in parallel with longer-burning sustainer rockets to augment the space vehicle's takeoff thrust and payload capability.

  4. Liquid rocket booster - Wikipedia

    en.wikipedia.org/wiki/Liquid_rocket_booster

    The Delta IV Heavy consists of a central Common Booster Core (CBC), with two additional CBCs as LRBs instead of the GEM-60 solid rocket motors used by the Delta IV Medium+ versions. At lift off, all three cores operate at full thrust, and 44 seconds later the center core throttles down to 55% to conserve fuel until booster separation. [10]

  5. Graphite-Epoxy Motor - Wikipedia

    en.wikipedia.org/wiki/Graphite-Epoxy_Motor

    The reduction in weight was used to extend the GEM 40 by 5.9 feet (1.8 m) compared to the Castor 4 used on 6000-series Delta II. [14] [16] Delta II vehicles could be configured with three, four, or nine GEM 40 boosters. When using three or four boosters, all GEM 40s were ignited on the ground.

  6. Booster may be needed for J&J shot as Delta variant spreads ...

    www.aol.com/news/booster-may-needed-j-j...

    The debate centers on concerns over how protective the J&J shot is against the Delta variant first detected in India and now circulating widely in many countries.

  7. Pfizer’s booster shot ‘strongly’ protects against delta ...

    www.aol.com/pfizer-booster-shot-strongly...

    A potential third dose of Pfizer’s coronavirus vaccine appears to offer robust protection against the highly contagious delta variant, according to preliminary data released by the company on ...

  8. Delta (rocket family) - Wikipedia

    en.wikipedia.org/wiki/Delta_(rocket_family)

    The Delta 3000 combined the same first stage as 1000-series and 2000-series with upgraded Castor 4 solid boosters and was the last Delta series to use the McDonnell Douglas Delta P second stage with TRW TR-201 engine. Delta 3000 introduced the PAM (Payload Assist Module) / Star 48B solid-fueled kick motor, which was later used as Delta II third ...

  9. Vulcan Centaur - Wikipedia

    en.wikipedia.org/wiki/Vulcan_Centaur

    With a single core and six GEM boosters, the Vulcan Centaur can lift 27,200 kilograms (60,000 lb) to low Earth orbit (LEO), [25] surpassing the Atlas V's maximum of 18,850 kg (41,560 lb) with a single core and five GEM boosters, [26] and approaching the 28,790 kg (63,470 lb) capacity of the three-core Delta IV Heavy.