Stories
Slash Boxes
Comments

SoylentNews is people

posted by mrpg on Tuesday March 20 2018, @01:30AM   Printer-friendly
from the to-infinity...-and-low-orbit dept.

The United Launch Alliance's CEO Tory Bruno has been making his case for the upcoming Vulcan rocket and Advanced Cryogenic Evolved Stage. The system could compete against SpaceX's Falcon Heavy and BFR in the mid-2020s:

The maiden flight of the Vulcan currently is targeted for the middle of 2020. Two successful commercial launches are required as part of the government certification process, followed by a required upper stage upgrade to improve performance, either moving from two to four Centaur RL10 engines or using a different set of engines altogether. If all goes well, ULA will introduce its new upper stage in 2024, the Advanced Cryogenic Evolved Stage, or ACES, that Bruno says will revolutionize spaceflight. "This is on the scale of inventing the airplane," Bruno told reporters during the media roundtable. "That's how revolutionary this upper stage is. It's 1900, and I'm inventing the airplane. People don't even know what they're going to do with it yet. But I'm confident it's going to create a large economy in space that doesn't exist today. No one is working on anything like this."

The Vulcan will stand 228 feet tall with a first stage powered by two engines provided by either Blue Origin, a company owned by Amazon-founder Jeff Bezos, or Aerojet Rocketdyne. Blue Origin's BE-4 engine burns methane and liquid oxygen while Aerojet Rocketdyne's AR-1 powerplant burns a more traditional mixture of oxygen and highly refined kerosene.

[...] ULA plans to begin engine recovery operations after the Vulcan is routinely flying and after the ACES upper stage is implemented. Bruno said the engines represent two-thirds of the cost of the stage and getting them back every time, with no impact on mission performance, will pay big dividends. SpaceX, in contrast, must use propellant to fly its Falcon 9 stages back to touchdown. Heavy payloads bound for high orbits require most if not all of the rocket's propellant and in those cases, recovery may not be possible. As a result, SpaceX's ability to recover rocket stages depends on its manifest and the orbital demands of those payloads.

"Simplistically, if you recover the old booster propulsively then you can do that part of the time, you get all the value back some of the time," Bruno said. "Or, you can recover just the engine, which is our concept, and then you get only part of the value back, about two thirds ... but you get to do it every single time because there's no performance hit. So it really turns into math."

ULA expects to fly at least 7-8 more Delta IV Heavy rockets between now and the early 2020s, with some Atlas V launches happening concurrently with the beginning of Vulcan launches in the mid-2020s.

The U.S. Air Force has just awarded ULA a $355 million contract to launch two Air Force Space Command spacecraft, and SpaceX a $290 million contract to launch three GPS Block III satellites.

In addition to testing BFR with short hops starting in 2019, SpaceX plans to send BFR into orbit by 2020. The company is leasing land in Los Angeles, reportedly for the construction of BFR rockets.

Related: SpaceX's Reusable Rockets Could End EU's Arianespace, and Other News
Boeing CEO Says His Company Will Carry Humans to Mars Before SpaceX
Zuma Failure Emboldens SpaceX's ULA-Backed Critics; Gets Support from US Air Force [Updated]
SpaceX to Launch Five Times in April, Test BFR by 2019


Original Submission

 
This discussion has been archived. No new comments can be posted.
Display Options Threshold/Breakthrough Mark All as Read Mark All as Unread
The Fine Print: The following comments are owned by whoever posted them. We are not responsible for them in any way.
  • (Score: 2) by Immerman on Thursday March 22 2018, @12:58PM (2 children)

    by Immerman (3985) on Thursday March 22 2018, @12:58PM (#656572)

    Not necessarily - if you only launched with half the max payload you'd still have 3x the payload of an F9, while having a lot of fuel left over after you reached LEO to visit multiple different orbits and deploy satellites individually, depending on just how different those orbits are. Alternately, you could simply dramatically loosen the size and mass constraints on the satellites so that they could easily propel themselves to their final orbit. Or even develop mini-rockets - orbital boosters designed specifically for that "last mile" orbital insertion. The long-term ideal might be deploying a fleet of refuelable "orbital tugboats" that would rendezvous with the launcher for the purpose, as well as also retrieving and refueling satellites. Heck, it'd be inefficient overkill, but leave a few BFR Spaceships in orbit, equipped with robot arms and refueled with all the excess fuel every launch can carry. Or alternately, probably easier, use the cheaper, larger-tank BFR tankers to store excess fuel from some launches to refuel those that need more delta-v. Why launch with less than full fuel tanks? That fuel will be valuable in orbit.

    Starting Score:    1  point
    Karma-Bonus Modifier   +1  

    Total Score:   2  
  • (Score: 2) by Virindi on Thursday March 22 2018, @01:29PM (1 child)

    by Virindi (3484) on Thursday March 22 2018, @01:29PM (#656583)

    Those ideas require that stuff be launched into similar orbits, large additional complexity, or added capacity on the part of the thing being launched. Sure that's all possible, but it's not as simple as just slapping multiple satellites on the same rocket.

    Too bad real life isn't like KSP, where every launch goes to an equatorial orbit :D

    • (Score: 2) by Immerman on Thursday March 22 2018, @02:19PM

      by Immerman (3985) on Thursday March 22 2018, @02:19PM (#656597)

      Similar orbits certainly makes things easier, but how similar they need to be would depend very heavily on how much available delta-V the Spaceship has remaining after reaching orbit. And transferring fuel to/from an orbital tanker would actually be an excellent way to perfect what they hope to make a routine process for lunar and interplanetary missions.

      Meanwhile, added satellite capacity is relatively trivial - a bigger "gas tank" is no great challenge, especially given much more generous mass and size constraints for the same launch cost.