Author Topic: Stratolaunch: General Company and Development Updates and Discussions  (Read 1052157 times)

Offline ncb1397

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You probably wouldn't need a rotary launcher. You have over 100 feet of wingspan between the fuselages which is enough to fit over 50 air launched cruise missiles side by side.
That would be preferable, but do hardpoints need to be integrated into the wing structure at the outset of vehicle design?  Stratolaunch was designed to carry a large mass on the centerline, not under the wings, so not sure that can just be strapped on.

I believe the 3x Pegasus rocket configuration just had an adapter structure that connected into the attachment point and broke out the 3 hardpoints for the pegasus rockets. An adapter plate 50 feet long and 35 feet wide would carry the same amount of cruise missiles as just lining them up along the wing and would be less disruptive to the central wing aerodynamics.

Offline Stan-1967

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It's been sobering to consider what Stratolaunch could offer as a standoff platform for hypersonic weapons.  The AGM-183A is supposedly around 20,000 lbs, and there are solid plans & contracts in place to mount up to 4 of them under the wings of the B-52.  A fully loaded Stratolaunch has room & payload capacity to carry upwards of 20-30 of this class of weapon.  This would be new type of hypersonic swarm weapon with frightening & disruptive capability. 

Offline edzieba

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I suspect this proposal will go the same way as every previous version of it for the past several decades has: when you start to consider mass production of munitions at the scale where it makes sense to have dedicated carrier craft rather than spreading them among existing bombers, it makes just as much sense to mass-produce a booster stage for those munitions to allow them to operate independently of the carrier at similar standoff ranges, also which affords better operational flexibility.

Though even assuming that this time the project is pushed through, and further assuming it involves a new airframe rather than more funds to an existing contractor to build more of an existing airframe (what's that distant oinking sound I hear...): the Roc is a semicustom amalgam of 747 airframes, avionics and engines. That means producing a run of Rocs means trying to track down 747s that are retired or close enough to retirement to not pay full price for, but still in serviceable enough condition to actually use. With all the trouble the AF are having with the KC-46 build QC, asking them to accept aircraft bodged together out of returned/surplus parts may be a bit much.

Online meekGee

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It's been sobering to consider what Stratolaunch could offer as a standoff platform for hypersonic weapons.  The AGM-183A is supposedly around 20,000 lbs, and there are solid plans & contracts in place to mount up to 4 of them under the wings of the B-52.  A fully loaded Stratolaunch has room & payload capacity to carry upwards of 20-30 of this class of weapon.  This would be new type of hypersonic swarm weapon with frightening & disruptive capability.

As pointed to elsewhere, a planner's worst nightmare.  All resources located on a single non-hardened carrier...
What good is this?  Why not on multiple and thus redundant carriers?  And military-grade carriers that can operate from all airfields?

Making this aircraft into a weapon is non-sensical.

And since this is the same crowd, it is also not what Paul Allen had in mind when he started this project.
ABCD - Always Be Counting Down

Offline Kryten

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 Similarly to threads in non-SpaceX areas tending towards SpaceX discussion, threads about Stratolaunch or X-37 inevitably trend towards some Tom Clancy-on-a-bad-day level nonsense.

Offline Yazata

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The X-37 speculations are the result of all of the secrecy surrounding it.

Regarding Roc, it makes a lot more sense to me as a test platform for large air-launched vehicles of some sort (space, hypersonic, whatever) than it does as an operational platform for launching them in wartime. Of course if the vehicle being launched is big enough to require Roc's services, then its eventual operational use may require a very large carrier aircraft of some sort that's not currently in the inventory. So Roc might (just conceivably) serve as an experimental test article for some new class of large launcher aircraft as well.

All exceedingly speculative, and probably more appropriate for a Dale Brown novel than real life. 


Offline Nertea

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This is big news

Offline jarmumd

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From the Stratolaunch Careers page:

https://careers.stratolaunch.com/mojave-ca/principal-flight-dynamics-engineer/3E335E1D556047128E7BDC626D21187C/job/?vs=0

Stratolaunch is developing an air-launch test platform to contribute to high-speed research and development. The goal of Stratolaunch is to utilize the capabilities of the Stratolaunch Carrier Aircraft and air-launch test vehicles to enable development of technologies that may not exist otherwise. Stratolaunch strives to create technology development opportunities for commercial, philanthropic, and governmental organizations to collect rich and actionable data and drive advancements in science, research, and technology.

Stratolaunch is seeking an experienced flight dynamics engineer to guide the development of an autonomous air-launch vehicle with stability and control, handling qualities, and flight dynamics simulation expertise. The successful candidate will have a detailed understanding of aircraft flight dynamics, a solid mathematical background, and an ability to work with a small team in a fast-paced engineering development environment.

Online yg1968

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Quote from: Jean Floyd, CEO of Stratolaunch
Stratolaunch grew from 13 to 87 employees over the past 2 months. 2020 will be a great year!  VISION: Breaking Barriers. MISSION: To be the world’s leading provider of high-speed flight test services. VALUES: Deliver today. Grow for tomorrow. Accuracy and integrity always.
https://twitter.com/WJeanFloyd/status/1204552846143713280

Offline Comga

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It’s like they built the Glomar Explorer and hoped for a Russian sub to sink.
Hypersonics are hot now.
But little chance for spaceflight from Stratolaunch
Do we move the discussion or just close this one and start another in Suborbital?
What kind of wastrels would dump a perfectly good booster in the ocean after just one use?

Offline FutureSpaceTourist

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Quote
Exclusive: Buyer of Paul Allen’s Stratolaunch space venture is secretive Trump ally

By Mark Harris on December 11, 2019 at 10:36 am

The new owner of Stratolaunch, the space venture started by late Microsoft co-founder Paul Allen, is Steve Feinberg, a secretive billionaire with close ties to President Trump.

https://www.geekwire.com/2019/exclusive-buyer-paul-allens-stratolaunch-space-venture-secretive-trump-ally/

Offline jstrotha0975

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Quote
Exclusive: Buyer of Paul Allen’s Stratolaunch space venture is secretive Trump ally

By Mark Harris on December 11, 2019 at 10:36 am

The new owner of Stratolaunch, the space venture started by late Microsoft co-founder Paul Allen, is Steve Feinberg, a secretive billionaire with close ties to President Trump.

https://www.geekwire.com/2019/exclusive-buyer-paul-allens-stratolaunch-space-venture-secretive-trump-ally/

This has DOD written all over it.

Offline Asteroza

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Well, they did need alternatives to those old NB-52's for drop tests so...

USAF has a number of hypersonic test vehicles and near-production vehicle tests lining up (such as ARRW). Generation Orbit is working with AFRL on the X-60A as a hypersonic test platform booster, and they had previously floated getting a used DC-10 for their Go Launcher 3 design.

Offline Comga

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Quote
Exclusive: Buyer of Paul Allen’s Stratolaunch space venture is secretive Trump ally

By Mark Harris on December 11, 2019 at 10:36 am

The new owner of Stratolaunch, the space venture started by late Microsoft co-founder Paul Allen, is Steve Feinberg, a secretive billionaire with close ties to President Trump.

https://www.geekwire.com/2019/exclusive-buyer-paul-allens-stratolaunch-space-venture-secretive-trump-ally/

Quote
All the jobs currently listed on Stratolaunch website are at its Mojave flight facility, raising the possibility that the company’s Seattle office is living on borrowed time. Job descriptions make no mention of satellite launches, instead noting that “Stratolaunch is developing an air-launch platform to contribute to high-speed research and development.”

As said, no satellite launches. No spaceflight, unless that’s defined really loosely.
What kind of wastrels would dump a perfectly good booster in the ocean after just one use?

Online yg1968

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A similar article: New Owner Of Stratolaunch And World's Largest Plane To Refocus On Hypersonic Testing
https://www.thedrive.com/the-war-zone/31536/new-owner-of-stratolaunch-and-worlds-largest-plane-to-refocus-on-hypersonic-testing
« Last Edit: 12/18/2019 11:56 pm by yg1968 »

Offline ChrisWilson68

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An impractically expensive aerospace project -- that's just what the DoD likes to spend money on.  And the DoD has the money to do it.  It's a match made in heaven.

Offline FutureSpaceTourist

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https://www.thedrive.com/the-war-zone/31903/stratolaunch-was-crafting-hypersonic-vehicles-before-its-official-pivot-to-high-speed-testing

Quote
Stratolaunch Was Crafting Hypersonic Vehicles Before Its Official Pivot To High-Speed Testing
This past work is more relevant than ever now that the company says it is switching from focusing on space launches to hypersonic testing services.

BY JOSEPH TREVITHICK
JANUARY 21, 2020

A research paper shows that Stratolaunch, the company that owns the world's largest airplane, the Roc, was exploring using it as a platform to launch hypersonic research vehicles, in addition to space launch systems, more than a year ago. Last month, the firm, under new ownership following the death of founder Paul Allen, also co-founder of Microsoft, reportedly shifted toward primarily offering hypersonic test support rather than space launch services, which makes this work especially relevant now.

Paper is available at:

https://www.researchgate.net/profile/Stephen_Corda/publication/327675880_Stratolaunch_Air-Launched_Hypersonic_Testbed/links/5cd83b64a6fdccc9dda4a5c0/Stratolaunch-Air-Launched-Hypersonic-Testbed.pdf?origin=publication_detail

Quote
Stratolaunch Air-Launched Hypersonic Testbed
Stephen Corda1, Curtis M. Longo2, and Zachary C. Krevor3
Stratolaunch Systems Corp., Seattle, WA, 98104, USA

Stratolaunch Systems is exploring the development of aerospace vehicles and technologies to fulfill several important national needs, including the need for reliable, routine access to space. This exploration includes the need to significantly advance the nation’s ability to design and operate hypersonic vehicles. Aligned with these goals, Stratolaunch is in the early development stages of an unmanned, autonomous, reusable hypersonic testbed, to be air- launched from the Stratolaunch carrier aircraft, the largest aircraft, by wingspan, ever built. Powered by a Stratolaunch-developed liquid-propellant rocket engine, the Stratolaunch hypersonic testbed is capable of accelerating to hypersonic speeds, then gliding to an autonomous, horizontal landing on a conventional runway. The Stratolaunch hypersonic testbed offers heretofore unobtainable hypersonic test capabilities, which may provide the quickest and most efficient path for transitioning hypersonic technology from the research environment to operational applications. The Stratolaunch carrier aircraft is described, including its nominal mission parameters and payload-carrying capabilities. Conceptual design details of a Mach 10-class Stratolaunch hypersonic testbed are discussed, including its aerodynamics, performance, propulsion system, and sub-systems packaging. Plans for the development of a smaller, Mach 6-class hypersonic testbed are also briefly described.

Online yg1968

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Quote from: GeekWire
Although Stratolaunch has been mostly mum about its plans going forward, today it responded to news reports reviewing its previous hypersonic plans. “Stratolaunch is exploring the development of aerospace vehicles and technologies, including the need for reliable, routine access to space. This exploration includes the need to significantly advance the nation’s ability to design and operate hypersonic vehicles,” company spokesman Art Pettigrue said in a statement emailed to GeekWire.

https://www.geekwire.com/2020/ownership-change-stratolaunch-confirms-still-working-hypersonic-vehicles/
« Last Edit: 01/22/2020 12:28 am by yg1968 »

Offline Star One

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Quote
A research paper shows that Stratolaunch, the company that owns the world's largest airplane, the Roc, was exploring using it as a platform to launch hypersonic research vehicles, in addition to space launch systems, more than a year ago. Last month, the firm, under new ownership following the death of founder Paul Allen, also co-founder of Microsoft, reportedly shifted toward primarily offering hypersonic test support rather than space launch services, which makes this work especially relevant now.

https://www.thedrive.com/the-war-zone/31903/stratolaunch-was-crafting-hypersonic-vehicles-before-its-official-pivot-to-high-speed-testing

Offline FutureSpaceTourist

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https://twitter.com/stratolaunch/status/1230177996784320512

Quote
We are honored @Stratolaunch has been named a finalist for the prestigious @NatlAero 2019 Robert J. Collier Trophy in recognition of the engineering achievement of the Stratolaunch Carrier Aircraft. Congrats to all 2019 nominees! #stratolaunch #scaledc #thinkbig #breakingbarriers

 

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