Want to read Slashdot from your mobile device? Point it at m.slashdot.org and keep reading!

 



Forgot your password?
typodupeerror
×
Businesses Communications Space

Rocket Lab Launches Highest Mission Yet To Put Astro Digital Satellite In Orbit (space.com) 27

XXongo writes: Sometimes it seems that all the space news focuses on SpaceX, but another private rocket company, Rocket Lab, is also making history with their bargain-basement space launcher, the Electron. The Electron booster just completed its seventh launch, this time carrying a satellite to the highest orbit yet, 1000 km. The launch carried the Astro Digital "Corvus" satellite. At $5.7 million per launch, the company is the first of many space start-ups competing for the small-satellite launch business, a market too small to be of interest to the major launch companies like SpaceX and United Launch Alliance. To lower costs further, Rocket Lab has announced its intention to make their booster reusable -- with plans to capture Electron's first stage in mid-air by helicopter.
This discussion has been archived. No new comments can be posted.

Rocket Lab Launches Highest Mission Yet To Put Astro Digital Satellite In Orbit

Comments Filter:
  • ''with plans to capture Electron's first stage in mid-air by helicopter.''

    Sounds like a serious amount of exposure for the helicopter pilot. Test pilot type exposure.

    • Re:Really.. (Score:5, Informative)

      by JoshuaZ ( 1134087 ) on Friday October 18, 2019 @07:04AM (#59321672) Homepage
      There's been prior work by Lockheed on trying this with rocket engines, and ULA is working on a similar idea to just capture the engines of their Vulcan rocket. We've been doing midair captures since the 1960s when it was used to capture film canisters dropped by spy satellites https://en.wikipedia.org/wiki/Mid-air_retrieval [wikipedia.org]. Rocket stages which will be captured will vent all their fuel and oxygen before they are in the capture range, so there's no risk of explosion. Doing this sort of thing will be not easy but not substantially more dangerous to pilots than flying a helicopter.
      • by ljw1004 ( 764174 )

        There's been prior work by Lockheed on trying this with rocket engines, and ULA is working on a similar idea to just capture the engines of their Vulcan rocket. We've been doing midair captures since the 1960s when it was used to capture film canisters dropped by spy satellites https://en.wikipedia.org/wiki/Mid-air_retrieval [wikipedia.org]. Rocket stages which will be captured will vent all their fuel and oxygen before they are in the capture range, so there's no risk of explosion. Doing this sort of thing will be not easy but not substantially more dangerous to pilots than flying a helicopter.

        It sounds extraordinary to me! And indeed the wikipedia link says:

        This is a risky technique, and so is only used when other forms of landing are infeasible. ... The need for human aviators to perform a manoeuvre which would normally be classed as a stunt may in the future be avoided by advances in unmanned aerial vehicles.

        That does make it sound substantially more dangerous.

        • Am I being naive here or does a parachute and a boat seem less risky and highly feasible?

          • Parachutes are incapable of controlling the descent well enough to land in a specific spot as small as a boat. That's why SpaceX abandoned plans to return their Falcon 9 first stages with parachutes. Also it's harder to get it to land exactly upright and not tip over with parachutes.

            Electron can't land propulsively though because they have an extremely weight-sensitive vehicle that can't afford to carry extra fuel and still be able to get anything useful to orbit. Thus they have to design a system of parach

      • There's a hell of a difference between a film canister and the first stage of a launch vehicle!

        So no it is not less dangerous.
  • I like Rocket Lab. (Score:4, Interesting)

    by Rei ( 128717 ) on Friday October 18, 2019 @06:33AM (#59321660) Homepage

    I also feel bad for them, though, in that I feel they showed up too late for the party. They've had a market so far, but SpaceX's new dedicated ride-sharing launches for a third the price look like they're going to relegate the Electron stack to a bit player, only getting customers who want a dedicated rocket specifically for themselves.

    I'm not sure how Rocket Lab plans to respond. I doubt that recovering the booster by helicopter (if they can pull it off consistently... that's not easy) will be enough. Maybe it'll help them close the gap enough to attract customers, though. But SpaceX keeps getting more cost efficient, too; Starship launches will be far cheaper than Falcon launches, despite having a vastly higher payload capacity.

    Still, there should always be some market for cheap dedicated rockets. Rocket Lab definitely took the right approach to fill that niche, despite the naysayers pooh-poohing the choice of an electric pump-fed engine. I look forward to seeing what path they take on the road ahead.

    • by Geoffrey.landis ( 926948 ) on Friday October 18, 2019 @10:17AM (#59321968) Homepage

      I also feel bad for them, though, in that I feel they showed up too late for the party. They've had a market so far, but SpaceX's new dedicated ride-sharing launches for a third the price look like they're going to relegate the Electron stack to a bit player, only getting customers who want a dedicated rocket specifically for themselves.

      Their plan seems to be that flying a dedicated launch instead of joining another launch as a secondary payload gives you more control, and that there will be customers who want that. Flying as a ride-share has been the classic way to get small payloads into orbit, but flying as secondary payload means you have no control over things like when you launch and to what orbit, and means you give the main payload the right to tell you what to do (and to boot you off if they don't like what you're doing). And you're dependent on the main payload not cancelling the launch because they have a problem, which is something that happens.

      So, Electron is offering a service that fits a market niche. A niche for how many launches? Hard to say.

      This was originally Pegasus' intended market niche (and Pegasus just launched again last week: https://spacenews.com/pegasus-... [spacenews.com] ), but Pegasus is much higher than that five-million-per-launch niche (to be fair, it launches twice the mass of Electron, and has more flexibility to hit high-inclination orbits... but it's more than twice the cost).

      • by Rei ( 128717 )

        Agree wholeheartedly about a niche remaining, but a niche of unknown size. One minor nitpick, however:

        but flying as secondary payload means you have no control over things like when you launch and to what orbit, and means you give the main payload the right to tell you what to do (and to boot you off if they don't like what you're doing). And you're dependent on the main payload not cancelling the launch because they have a problem, which is something that happens.

        That's not how SpaceX's new dedicated ride

    • You might as well say that cars are doomed because buses exist and are clearly a more economically efficient means of transport.

      SpaceX isn't a big threat to Rocket Lab. SpaceX can't provide a timely, assured launch for a smallsat -- you're one of dozens of customers on the flight and the schedule will depend on everybody else. SpaceX can't provide the exact orbit your satellite needs, unless you're lucky. SpaceX has serious trouble with launch cadence too.

    • Actually, this [everydayastronaut.com] is the main reason the Falcon 9 can't use chutes and the Electron can.

  • Read the first paragraph of the announcement: "The move aims to enable Rocket Lab to further increase launch frequency by eliminating the need to build a new first stage for every mission."

    The primary reason to do this is simply to reduce their launch backlog as fast as possible, to greatly reduce customer delays, to increase launch frequency, and to let Rocket Lab them keep their factory small and efficient.

    First stage recovery was seen as a ***much*** better option than building an entire new factory!

    It m

He has not acquired a fortune; the fortune has acquired him. -- Bion

Working...