Showing posts with label Columbia. Show all posts
Showing posts with label Columbia. Show all posts

Monday, February 22, 2010

Private Sector Space Dreams


The American bureaucracy of which NASA is a part of, has by force of congressional decree and presidential inattention except in election years, become affraid to take any bold moves in manned spaceflight.

They talk a good game, the public takes it hook, line, and sinker, and nothing really ever becomes of it. The shuttle was just suppose to be a part of a shuttle-station program. Towards the end of its career, it finally did that job. But in the beginning, it was nothing more than a glorified dump truck.

And it was paid for by the American taxpayer.

Back in the 1990s, there was a chance to replace the shuttle with a newer spacecraft. The VentureStar from Lochkeed Martin or the DC-X vertical take-off/landing, single-stage to orbit spacecraft. The DC-X was a sub-scale, flight tested piece of hardware. The VentureStar was a computer animation only. Guess which one the Clinton Administration went with? That's right: VentureStar.

Then Columbia broke up on reentry.

President Bush proposed shutting down the shuttle program and replacing it with the Apollo on steroids program known as Constellation. Now President Obama will cancel even that and hope that the private sector will take over.

Well, I (slightly) agree with President Obama that it would be better for the private sector to come into its own as far as transporting folks up into Low Earth Orbit (LEO). But, the government should have kept the Constellation Program going.

I remember in a Air Force ROTC classroom in my college days, my instructor was describing the problem faced by FDR in the Pacific War. He had General MacArthur promoting a campaign that would go through the Philippines. Admiral Nimitz wanted to go straight across the Pacific to the China coast cutting the Japanese supply line in two.

President Roosvelt decided that it would be in the best interest of the war effort to go with BOTH strategys.

I submit to the reader that the same thing could have been applied to the Constellation Program. I'm on record opposing the idea of Super-Apollo, but NO American manned spaceflight program is even worse to think about.

So where this this lead us to? Private Space Industry.

In fact, I think it is going to be up to men like Bigelow and Rutan to get American civilians back up into space (without government aid). And more important, get them to the surface of the moon and back to Earth on a regular flight schedule.

Eventually, a lunar base will be built. And maybe then, NASA will get funding from Congress to lease a base on the moon.

So, are there enough deep pockets in the worldwide civilian sector to make it possible for the non-government space program to make it to the moon and Mars ? And do it before the Chinese gets there.

Check out the article "Moon dreams" from The Economist website(February 18, 2010) for the article that inspired me to write this posting.


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Ref. The Economist, February 18, 2010, "Private-sector space flight. Moon dreams" (http://www.economist.com/science-technology/displaystory.cfm?story_id=15543675).

Wednesday, December 31, 2008

NASA Releases Report on Shuttle Columbia Disaster


Disclosure: Columbia Space Shuttle Commander Rick Husband and I were classmates at Texas Tech University in the U.S. Air Force ROTC program there. While Astronaut Willie McCool attend high school in Lubbock, Texas, I never met the man and only knew about his connection to Lubbock, Texas, in the weeks leading up to the January 16th lift-off of the Shuttle Columbia. The above photo is a AP picture.
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On December 30, 2008, NASA releases its report on the Space Shuttle Columbia disaster of February 1, 2003.

For those not keeping up to date with things, the Columbia was the oldest shuttle of the shuttle fleet and she was returning home that morning when the heat of re-entry further damaged the left wing that was hit by a large piece of foam on lift-off 16 days before. She broke up over the state of Texas. Many residents, including this blogger, heard that sonic boom that morning. The 400-page document gave a detailed account of how Columbia's seven crew members last few seconds were like before the total break up of the shuttle happened.


Columbia's crew was killed in seconds and had only a brief 40-second time window between the shuttle's lost of control and its de-pressurization and destruction. By that time, the crew was being flung about the cabin as the shuttle tumbled and broke apart. Bottom line: while crew members tried to work the problem, the accident was not “ultimately survivable.”


The NASA report made 30 recommendations and cited some lessons to take away from this accident. Mostly related to to the crew's spacesuits and seat restraints.

1. One of the most immediate safety changes made was in the current inertial wheel lock modifications on the crew seats. The mechanism locks an astronaut's seat restraint due to external forces much like the current seat belts on cars today during a sudden stop or impact. In this accident, those seat locks did not lock as designed, subjecting the astronauts strapped in place to extreme forces and trauma. Seat modifications will also be employed on the new Orion Capsule.


2. Launch and Landing Pressure Suits for Orion crews will also be designed to be sealed during re-entry. The current orange partial pressure suits seep pure oxygen into a shuttle cabin when the visors are sealed – which violate NASA's flammability rules. During the Columbia accident, one of the crew members was not fully strapped into place. Another did not have a helmet secured, while the six that did have their visors opened. Also, three of the crew members did not have their suit gloves locked in place.


3. NASA has also update pre-landing milestones to allow astronauts to focus on their own preparations in addition to getting the orbiter ready for re-entry.


4. NASA also has adjusted its training process for de-orbit. Before, there was more concern about getting the vehicle ready for landing than about the crew. Now its suppose to be 50/50.


Wayne Hale stated that “Spaceflight takes eternal vigilance. Our goal here is to do our best to prevent accidents in the future and that is not a subject that is ever going to be closed.” This report is expected to be NASA's last investigation into the Columbia disaster.


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Ref> Space.com article by Tariq Malik “New Columbia Accident Report to Help Astronaut Safety.” December 30, 2008.