Showing posts with label nasa. Show all posts
Showing posts with label nasa. Show all posts

Sunday, November 17, 2013

Setting my alarm for 2021.

2021. Eight years from now.  If NASA can keep it on schedule, that's when the first human crew will be launched into space aboard NASA's Space Launch System (SLS) Block I launch vehicle.  The mission will essentially be a repeat of Apollo 8, whose capsule and crew orbited the Moon and returned to Earth in December of 1968 (a mere seven years after the first successful Mercury launch).

NASA formally announced the SLS in September of 2011, so they've already had two years to work on it... meaning a full decade from concept to launch.  And remember: it is based on mostly off-the-shelf technology.

Why should I be excited about the SLS?  Sure, if it were here today, we could launch people and equipment into Lunar orbit and beyond.  But eight more years? And that assumes no slips in the schedule.  We know how often that happens.  We are more likely to not see humans flying the SLS until 2023, if it hasn't been canceled.

In the meantime, the Dragon and the Falcon family of launchers will be human-rated (and possibly joined by launchers/spacecraft from other commercial suppliers).  And while SpaceX is busy ferrying people and supplies to the ISS on NASA's nickel, Elon Musk will be working toward loftier goals.  The next few years will be exciting times for space exploration, but other than an un-crewed test flight four years from now, the SLS will not play much of a part.

1st-graders filled with enthusiasm for the mighty SLS by NASA's educational and public outreach efforts?  They'll be paying speeding tickets before they will see a meaningful launch.

So I'm going to set an alarm for 2021, and then I'll consider getting excited about the SLS.

Thursday, December 20, 2012

Venus Upper Atmosphere Workshop on January 24

UPDATED: Details now available for remote attendees.

Are you a planetary scientist studying the Venusian atmosphere, or an engineer looking to build spacecraft or instrumentation that will further the study of our twin planet?  Then clear your calendar on January 24th, 2013.

NASA's Glenn Research Center, along with the Ohio Aerospace Institute, is sponsoring a Science and Technical Interchange Meeting (STIM) on the topic of Venus Upper Atmosphere Investigations.

The aim of this day-long set of meetings is to encourage the discussion of shared goals and priorities with regard to the study of the atmosphere of Venus by spacecraft.

According to the agenda, they hope to
  1. Foster a science discussion on goals, objectives, priorities, and significance of the Venus upper atmosphere and how Venus upper atmosphere science would contribute to overall exploration of Venus,
  2. discuss the desired measurements and measurement requirements to achieve potential Venus upper atmosphere science, and 
  3. discuss spacecraft concepts and technologies that could reach the Venus UA and collect and return the desired data.
If you cannot attend in person, they may be making arrangements for attending remotely-- I have a question out to one of the organizers and I'll update this post accordingly.

If you are lucky enough to be able to travel to the workshop and can arrive a day early, they are planning a tour of the nearly-completed NASA Glenn Extreme Environments Rig (GEER) on the afternoon of the 23rd. Once completed, the GEER will be able to accurately simulate any planetary environment in the solar system, including both the surface and the atmosphere of Venus. Read more about the GRC's Strategic Science work here.

If you are interested in attending, registration is required.

Friday, December 16, 2011

It's Been a Big Week for Commercial Space

Just to recap the news from Commercial Space in the last week:

  • SpaceX gets approval to combine their COTS demonstration flights 2 and 3 into a single flight, and a firm launch date of February 7, 2011.  We're only eight weeks away from the first commercial delivery of supplies to the ISS!
  • StratoLaunch announces their plans to build an air-launched solution for placing payloads of up to 13,500 kg in LEO.  Scaled Composites will create the world's largest airplane to carry a SpaceX Falcom 9 derivative to 30,000 feet where the rocket will be launched to orbit.
  • NASA announces they will be using Space Act Agreements, rather than FAR-based contracts for the third phase of the Commercial Crew Development program.
  • Orbital Sciences announced that its new launcher (also part of the COTS program), formerly known as the Taurus II, has been renamed the Antares.

CCDev3: The Glass is Half Full

NASA has made lemonade out of the lemons Congress gave them (Commercial Crew gets only $406 million in the coming year).  Dropping the idea of Firm Fixed-Price contracts under the Federal Acquisition Regulations (FARs) and choosing instead to continue phase 3 of the CCDev using Space Act Agreements (SAAs) will allow NASA to remain engaged with multiple suppliers and keep costs down for those suppliers.

The largest concerns and complaints being aired by members of congress and the press generally involve how much control NASA will lose.  Many people are picking up on comments from NASA's Bill Gerstenmaier that while the SAA approach will provide more flexibility, it "doesn't insure that we're going to get exactly what we need coming out the other side".

How can anyone believe that the suppliers vying for the ultimate contracts to deliver NASA astronauts to LEO are not completely aware of what NASA needs?  After two rounds of CCDev work, they know precisely what is required.  And if for some reason one of these companies does not produce a solution that satisfies NASA in the end, NASA will not be contracting for their services.

Continuing CCDev under SAAs is the best news we've had in months, and it in no way threatens NASA getting their requirements met.

Wednesday, September 14, 2011

NASA Awards $3 Million to Further Research in Solar Electric Propulsion

NASA today announced awards totaling about $3 million to five companies to "develop concepts for demonstrating solar electric propulsion in space."  Each of these companies is expected to produce a report intended to contribute to a mission concept to demonstrate solar electric propulsion technologies.  NASA expects that such propulsion systems will be a part of effective payload delivery to high Earth orbits and beyond.

These awards are part of the first of four Point of Departure (POD) missions from NASA's Flagship Technology Demonstration (FTD) Program, and are the result of proposals submitted in response to a Broad Agency Announcement issued on June 17th.  The mission is intended to show that Solar Electric  Propulsion (SEP) technology could reduce Earth-Mars transit time from months to weeks.

The other three POD missions are:
  • On-orbit storage and transfer of cryogenic fuels (2015)
  • Inflatable habitat module attached to ISS (2016)
  • Use of aerocapture to land large payloads on Mars (2018)
More in-depth information on the FTD Program can be found at Hobby Space.

Let's take a closer look at the first of these companies selected for the concept phase of the first mission (follow-on posts will cover the other award recipients).


Analytical Mechanics Associates Inc., in Hampton, Va.

AMA has worked on commercial and government projects since 1962, providing engineering consulting and services.  In addition to being selected for this mission, they were also selected to participate in the concept phase of the cryogen fuel storage and transfer mission in August of this year.

They are keeping their work on SEP close to the vest, with the exception of a couple of intriguing videos.  The first video is an animation showing a SEP- driven spacecraft heading away from Earth toward the Moon, and the second depicts the SEP Stack arriving at a near-Earth asteroid.

AMA's bread and butter looks to be the development of anaylsis, studies, and recommendations to primarily space-related customers, so this work is righht up their alley.

NASA Announces Space Launch System Configuration

NASA adminstrator Charles Bolden, in a joint press conference with Senators Hutchison and Nelson, announced the intended design for the new Space Launch System.

Highlights:

  • The configuration will consist of a core stage and an upper stage both powered by a liquid hydrogen and liquid oxygen propulsion system, and booster stages that will be open to competition.
  • The core stage will be powered by the RS-25D/E engines from the Space Shuttle, and the upper stage will be powered by the J-2X engine (a derivative design of the Saturn V main engines).
  • Solid Rocket boosters will initially be used for the booster stages during developmental flights, but the ultimate design of the booster stages will be determined as part of a competition.
  • The initial lift capacity is 70 metric tons to LEO, with later versions providing as much as 130 mT.  this is the most powerful U.S. launcher since the Saturn V (127 mT to LEO).
  • The first developmental flight is targeted for the end of 2017.
This modular architecture was chosen because it leverages existing capabilities, and its evolvable development approach allows the high-cost development activities occur early in the program.  Bolden stated that "the decision to go with the same fuel system for the core and the upper stage was based on a NASA analysis demonstrating that use of common components can reduce costs and increase flexibility."

NASA has already updated their websiste for the SLS, so more information is available there.

Tuesday, September 13, 2011

Summary of NASA/ATK Commercial Crew Announcement

At 3:00pm EDT today, NASA and Alliant Techsystems (ATK) made a joint announcement regarding a possible acceleration of LEO crew transportation (see the Press Release here).

Ed Mango, NASA's Commercial Crew Program Manager, began his remarks by pointing out that Commercial Crew is making making steady progress, with development remaining on time, and on budget.  He then went to announce, as expected by many, that CC has entered into an unfunded Space Act Agreement (SAA) that will allow NASA and ATK to share information, and it grants ATK access to Kennedy Space Center during Liberty development.  The agreement will run though next spring, and will include a series of milestones agreed to by both parties.  This SAA puts ATK in a position to be ready to compete in the next CCdev phase.

Kent Rominger from ATK expounded on the virtues of Liberty, noting that both stages have extensive flight experience.  The first stage is an SRB from the STS, and the upper stage is the Ariane 5 Core stage (45 consecutive successful flights for the upper stage).

Mr. Rominger answered the question "Why Liberty?" with the following points:
  • They believe it is the safest, most reliable means to put crew on orbit.
  • Liberty can lift 44,000 lb to LEO.
  • The White House's new Space Policy calls for expanded international cooperation, and that's what Liberty is (a U.S. and European commercial partnership)
  • This will bring jobs into Florida, and take advantage of existing infrastructure and talent.
  • Liberty is extremely simple.  One engine on first stage, one on the second.  Minimize things that can go wrong, so you minimize opportunities for a failure.
  • No other provider can match our value, or our safety record.
During the Q&A session, a few interesting points were made:
  1. Kent Rominger referred to NASA's human rating requirements as "onerous."  Nevertheless, the two stages of Liberty were each developed from the beginning as parts of launch systems intended for human flight, and they believe they can meet the requirements.
  2. Ed Mango made it clear that NASA is NOT interested in doing spacecraft integration (crew vehicle to launcher).  They will give their business to commercial teams that offer a fully integrated solution.
  3. Kent Rominger stated that ATK will continue working on Liberty and maturing the system whether they are recipients of CCDev 3 funds or not.
  4. Ed Mango: We want multiple providers for carrying crew to LEO.  That assumes that there is sufficient funding at NASA to support this.  We'll always have a Russian capability available, and we won't say no to that.
I'll follow up with some analysis later.  Here's a video to bring you up to speed on the Liberty:

Friday, September 9, 2011

Is ATK the Newest Member of the CCDev Club?

Artist's Concept of
Liberty Launcher (ATK)
Next Tuesday, NASA and Alliant Techsystems (ATK) will jointly announce an agreement that could "accelerate the availability of U.S. commercial crew transportation capabilities."  It will not be carried live on NASA Television.

In the wake of the Russia's grounding of Soyuz launchers (effectively catching the U.S. manned space program with their pants down), the urgency to find alternatives is growing.

In April, ATK failed to receive CCDev-2 funds for the development of its Liberty launch vehicle. Undeterred, they decided to continue development of Liberty as a human-rated launcher in anticipation of future business with NASA (see SpaceFlightNow article).

I'm just speculating of course, but it seems highly likely that NASA and ATK have entered into a Space Act Agreement (SAA) to include the Liberty in the CCDev program.  Whether they will receive NASA funding, or work under an unfunded SAA (as ULA is doing in their efforts to man-rate the Atlas V, according to Aviation Week) is yet to be seen.

Even though the Liberty scored higher than the Atlas V in the CCDev-2 evaluations, none of the CCDev crew spacecraft competitors agreed to fly their craft atop the Liberty, according to Doug Messier at Parabolic Arc.  Are they nervous about putting people on top of a solid fuel booster?

I suspect NASA is trying to keep as many manned launch options as possible.  While no rocket is currently human-rated (even STS wasn't), The Falcon 9, Delta IV, Atlas V and now the Liberty are all viable options.  Increasing the competition may be the single biggest contributor to the hoped-for acceleration of the program.

UPDATE: I misread the press release-- the announcement wil not be carried on NASA TV.  Video highlights will be available afterward in NASA TV's Video File segment.

UPDATE 9/12: NASA has now decided to go ahead and broadcast the announcement live on NASA TV after all.  That's tomorrow (Tuesday) at 3:00pm EDT.

Monday, August 29, 2011

Catch-22 for Crew Transport to LEO

During his press conference this morning, ISS Program Manager Mike Suffredini said that if the Russians are unable to resume manned launches by mid-November, they will be forced to de-man the station no later than November 19th.

And while they are capable and ready to autonomously operate the ISS indefinitely, he made it clear that the absence of any crew would make it impossible for the SpaceX Dragon to dock with the station following its scheduled launch on November 30, 2011.

The interruption of LEO crew transport via Soyuz magnifies the need for alternatives (such as the Dragon), yet the test flights necessary to prove that the Dragon and its competition can successfully deliver supplies and people to the ISS cannot happen without a crew aboard the station.

On the other hand, if the problems that caused the loss of a Progress spacecraft last week are discovered and fixed such that human flights can continue to the ISS before she is de-manned, it will be more important than ever that SpaceX can successfully demonstrate the capabilities of the Dragon on November 30th.

Wednesday, August 24, 2011

Highlights of NASA News Conference: Loss of Progress 44

As reported in many news services, Russia lost contact with the Progress 44, and it failed to make orbit.

ISS Program Manager Mike Suffredini held a news conference at 12:00 Noon EDT, and passed along the following information:

Russia will be forming a commission to investigate, and the U.S. will be working with them to identify root cause of the failure.  This is the first Progress loss in the history of the ISS program.

There are implications to the ISS craft itself and the crews aboard.
  • The Soyuz booster used for the Progress launch is very similar to that used for crew launches, and the 3rd stage is identical, so this may impact the 22-September launch of the next 3-man crew, depending on the investigation.
  • Plenty of consumables to go a long time-- crews would reach the end of their time well before these are exhausted.
  •  The 3-person crew that is slated to return to Earth in September will reach 162 days in orbit by then.  The normal rotation period is 180 days, plus an additional 30 days of contingency.  This means they could stay on orbit another 45 days or so with no ill effects.  If the Soyuz crew launch is sufficiently delayed as a result of the ongoing investigation, Suffredini  said this crew will return to Earth and they can operate the station nominally with a total crew of 3 (but not much science will get done).
  • The currently higher orbit puts the ISS in a good position to tolerate delays in re-boost, although Suffredini pointed out that they have sufficient propellant onboard to proceed with the planned re-boost without the presence of the Progress.  the station can go for many months without re-supply.
Progress 44 was carrying 2.9 metric tons of non-unique supplies (easily replaceable): dry goods, water, fuel, and gasses.

When asked by a member of the press whether any of the planned commercial visits to the ISS could help with the delivery of supplies, Suffredini replied that even though NASA has an agreement to place 800 Kg on the SpaceX Dragon mission scheduled for November, he saw no reason to actually use the available capacity.  He also mentioned that Progress 45, currently scheduled for an October launch, could have its launch date moved up if needed.