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Archive for the ‘launch’ tag

Mar 25, 2020

COVID19 Impact Part II – SpaceX , SLS and NASA

Posted by in categories: disruptive technology, health, space, space travel

By Bill D’Zio March 25, 2020

SpaceX Dragon
SpaceX Crew Dragon on approach Credit NASA

Part 2 of the Life in Space with COVID19 we will delve into Crew demo-2 where NASA and SpaceX are planning a launch within two months. There are a lot of pre-launch milestones and activities to cover to ensure a safe flight for the Astronauts. If anything goes wrong, there are lives at stake. Now NASA and SpaceX have to contend with another potential setback, COVID19 pandemic. (Click here for part I)

The SpaceX Crew Dragon spacecraft for Demo-2 arrived at the launch site on Feb. 13, 2020. Photo credit: SpaceX

In Part I of why COVID19 pandemic is bad timing for the Space industry, we covered that issues happen because the relationship between complexity, risk, schedule and cost for space missions was not balanced.

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Oct 20, 2015

U.S. Air Force Assigns Two Block Buy Launches

Posted by in categories: government, military, science, space, weapons

http://spacenews.com/u-s-air-force-assigns-two-block-buy-launches/

Apr 14, 2010

Technology Readiness Levels for Non-rocket Space Launch

Posted by in categories: asteroid/comet impacts, engineering, habitats, human trajectories, space

An obvious next step in the effort to dramatically lower the cost of access to low Earth orbit is to explore non-rocket options. A wide variety of ideas have been proposed, but it’s difficult to meaningfully compare them and to get a sense of what’s actually on the technology horizon. The best way to quantitatively assess these technologies is by using Technology Readiness Levels (TRLs). TRLs are used by NASA, the United States military, and many other agencies and companies worldwide. Typically there are nine levels, ranging from speculations on basic principles to full flight-tested status.

The system NASA uses can be summed up as follows:

TRL 1 Basic principles observed and reported
TRL 2 Technology concept and/or application formulated
TRL 3 Analytical and experimental critical function and/or characteristic proof-of concept
TRL 4 Component and/or breadboard validation in laboratory environment
TRL 5 Component and/or breadboard validation in relevant environment
TRL 6 System/subsystem model or prototype demonstration in a relevant environment (ground or space)
TRL 7 System prototype demonstration in a space environment
TRL 8 Actual system completed and “flight qualified” through test and demonstration (ground or space)
TRL 9 Actual system “flight proven” through successful mission operations.

Progress towards achieving a non-rocket space launch will be facilitated by popular understanding of each of these proposed technologies and their readiness level. This can serve to coordinate more work into those methods that are the most promising. I think it is important to distinguish between options with acceleration levels within the range human safety and those that would be useful only for cargo. Below I have listed some non-rocket space launch methods and my assessment of their technology readiness levels.

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