Author Topic: SNC Dream Chaser UPDATE Thread  (Read 282295 times)

Offline yg1968

  • Senior Member
  • *****
  • Posts: 8899
  • Liked: 1063
  • Likes Given: 700
Re: SNC Dream Chaser UPDATE Thread
« Reply #680 on: 04/17/2017 04:09 PM »
This French article from March 21st 2017 says that SNC has not yet decided on a LV for cargo DC except for its first flight (which will be on an Atlas V). In the running are the following LVs:

Ariane 6 with 4 boosters
Blue Origin's New Glenn
ULA's Vulcan
SpaceX's Falcon 9

The article says that SNC will make a decision this spring on its LV for DC.

http://www.futura-sciences.com/sciences/actualites/dream-chaser-ariane-6-lancera-t-elle-mini-navette-dream-chaser-66745/
« Last Edit: 04/17/2017 07:22 PM by yg1968 »

Online FutureSpaceTourist

  • Senior Member
  • *****
  • Posts: 2559
  • UK
    • Plan 28
  • Liked: 1639
  • Likes Given: 595
Re: SNC Dream Chaser UPDATE Thread
« Reply #681 on: 04/22/2017 07:59 PM »
Quote
Thursday, April 20, 2017
Making Commercial Space Flight More Accessible

Draper Readies Dream Chaser for International Space Station

CAMBRIDGE, MA – Flight software developed by Draper is helping to bring routine commercial space flight one step closer to reality. The software will be on Sierra Nevada Corporation’s (SNC) Dream Chaser® spacecraft for resupplying the International Space Station (ISS). When the un-crewed spacecraft launches to the ISS, its mission will be to deliver six tons of food, supplies and fuel to the orbiting laboratory.

As an un-crewed spacecraft, Dream Chaser presents a unique set of challenges in its design and navigation. SNC envisioned a spacecraft that could land on a runway, similar to the Space Shuttle, so that it could be reused and put back into space within 60 days. SNC also wanted Dream Chaser to be resilient so that it could meet its goal of flying a minimum of 15 times.

For the Dream Chaser Cargo System, Draper addressed these challenges by applying its flight-proven capabilities that also enable cargo delivery to the ISS aboard Orbital ATK’s Cygnus spacecraft. The capabilities include mission automation and guidance, navigation and control (GN&C) software, as well as the human-rated fault-tolerant flight computer.

Draper used these same capabilities during the Constellation Program (CxP), when NASA had the Moon as a stepping stone towards missions to Mars. Now the company has brought those capabilities to one of the few spacecraft designated by NASA for resupplying the International Space Station under the Commercial Resupply Services (CRS-2) contract awarded to SNC.

Seamus Tuohy, director of space systems at Draper, believes Dream Chaser represents a new chapter in space travel. “The future of routine commercial space flight is quickly approaching, promising to make a trip into space as routine as air travel. Dream Chaser is an important step by showing how we can get to the Space Station and back quickly, easily and safely, and provide the vital cargo for making living and working in space possible for humans.”

The next test for Dream Chaser—a free flight and landing at NASA’s Armstrong Flight Research Center—will help validate the systems specially designed by Draper. The test flight will help confirm elements of the flight software and the flight control computer. It will also validate the spacecraft’s handling and performance characteristics during landing.

“Dream Chaser enhances the American capability to deliver and return ISS cargo, decreasing our reliance on foreign providers,” added Tuohy. “It also has the potential to increase use of hosted payloads and deployment of CubeSats by more industry and university partners.”

http://www.draper.com/news/making-commercial-space-flight-more-accessible
« Last Edit: 04/22/2017 08:00 PM by FutureSpaceTourist »

Offline yg1968

  • Senior Member
  • *****
  • Posts: 8899
  • Liked: 1063
  • Likes Given: 700
« Last Edit: 04/23/2017 09:20 PM by yg1968 »

Online FutureSpaceTourist

  • Senior Member
  • *****
  • Posts: 2559
  • UK
    • Plan 28
  • Liked: 1639
  • Likes Given: 595
Re: SNC Dream Chaser UPDATE Thread
« Reply #683 on: 05/06/2017 09:51 AM »
Quote
Gemini Software Heritage Shaping Human Spaceflight Today

Aviation Week, May 03, 2017 – When a United Launch Alliance rocket boosts Sierra Nevada Corp.’s Dream Chaser commercial cargo vehicle toward the International Space Station (ISS) at the end of this decade, it will find its way there with technology that has roots in the orbital rendezvous technology the government funded in the Gemini program more than a half-century ago.

The Charles Stark Draper Laboratory in Cambridge, Massachusetts, used government-funded guidance, navigation and control (GN&C) techniques dating from Gemini to build and program the guidance computer for the Apollo program, and it will use that same basic technology—upgraded dramatically over the years—for Sierra Nevada’s reusable robotic spaceplane...

http://www.aviationweek.com/commercializing-space/gemini-software-heritage-shaping-human-spaceflight-today (subscription required for full article)

Offline Jester

  • NSF Night Flyer
  • Administrator
  • Senior Member
  • *****
  • Posts: 6648
  • Some Space Agency
  • Liked: 2530
  • Likes Given: 68
Re: SNC Dream Chaser UPDATE Thread
« Reply #684 on: 05/09/2017 04:02 PM »
« Last Edit: 05/09/2017 04:02 PM by Jester »

Online FutureSpaceTourist

  • Senior Member
  • *****
  • Posts: 2559
  • UK
    • Plan 28
  • Liked: 1639
  • Likes Given: 595
Re: SNC Dream Chaser UPDATE Thread
« Reply #685 on: 05/22/2017 04:03 PM »
Quote
Sierra Nevada Corp‏Verified account @SierraNevCorp 16m16 minutes ago

Another day of tow tests @NASAArmstrong for our Dream Chaser® spacecraft. We obviously brought the fuzzy dice along for the ride!

https://twitter.com/SierraNevCorp/status/866681514918125571

Online Chris Bergin

Re: SNC Dream Chaser UPDATE Thread
« Reply #686 on: 05/25/2017 07:35 PM »
 

Dream Chaser® Spacecraft Passes Major Milestone
Completes Successful Integration Review for Space Station Resupply Mission

SPARKS, Nev. (May 25, 2017) – Sierra Nevada Corporation (SNC) successfully passed the third integration milestone for the Dream Chaser program under the NASA Commercial Resupply Services (CRS2) program, bringing it a major step closer to providing resupply services to the International Space Station (ISS).

CRS2 Integration Review #3 (IR3) confirmed SNC’s Dream Chaser Cargo System design meets NASA’s key requirements and maximizes probability of mission success during future flights.  The spacecraft is scheduled for at least six missions between 2019 and 2024. The reliability of the Dream Chaser design was also thoroughly reviewed as part of NASA’s Phase I Safety Review Process, which successfully demonstrated safety and mission assurance criteria.   The reviews covered all stages of mission operations including ground, launch, flight and landing.

“Passing the third CRS2 integration milestone is a really big deal for the program and its future,” said Steve Lindsey, vice president of Space Exploration Systems for SNC’s Space Systems business area. “We are proud of this accomplishment and  are well on our way towards completing the next critical milestone and the remaining developmental phases.  It’s a great feeling to be executing all our milestones on schedule and to be moving forward to our operational flight.”

The spacecraft’s unique cargo design transports more cargo mass (5,500 kilograms) to the ISS each mission.  In addition, a significant amount of cargo, almost 2,000 kilograms is directly returned from the ISS to a gentle runway landing at a pinpoint location. Dream Chaser’s all non-toxic systems design allows personnel to simply walk up to the vehicle after landing, providing immediate access to time-critical science as soon as the wheels stop. .

The complex and thorough review process found no significant design, build or system issues and underscored the Dream Chaser’s readiness for flight.

The major elements of Milestone 3 included:     

    Successful completion of the NASA Phase 1 Safety Review
    32 Hazard Reports and 16 Safety Data Packages approved by NASA
    Dream Chaser Architectural Design’s met all CRS2 requirements (hardware, software, flight dynamics, thermal control, etc.)
    More than 100 detailed design documents were delivered to NASA along with 30+ design reviews
    During the three-day IR3 review, more than 1,000 charts were briefed to the approximate 45 member NASA and Federal Aviation Administration (FAA) team, which demonstrated that Dream Chaser is at Preliminary Design Review level of maturity
    Launch vehicle operations, outside subcontracts and agreements
    Range safety plan, as well as FAA, Federal Communications Commission (FCC) and National Telecommunications and Information Administration (NTIA) licensing
    5 Safety Review Phase 1 meetings were conducted prior to the IR3 review and involved the delivery of 46 individual Safety Data Packages developed under our S&MA team.


In addition to completing this milestone, the Dream Chaser atmospheric test vehicle is in preparations for flight testing that will help verify these designs. The spacecraft is currently testing at NASA’s Armstrong Flight Research Center in California, having just successfully completed Phase One ground testing leading up to its second free flight test later this year.

Online FutureSpaceTourist

  • Senior Member
  • *****
  • Posts: 2559
  • UK
    • Plan 28
  • Liked: 1639
  • Likes Given: 595
Re: SNC Dream Chaser UPDATE Thread
« Reply #687 on: 05/25/2017 08:08 PM »

Tags: