Wow! I have many years experience in the aerospace industry. I have seen composites used, long ago, for upper stages, which operate in space. I have not seen that done for the while launcher. It should not be suprising considering what is being done for aircraft. This is really interesting and a real breakthrough.
I'd be interested to learn if the range-safety package had to be scaled up or down for the material change. The range-safety package is (usually) an explosive designed to rip open the booster in a controlled manner in case of loss of control. This permits the propellant to burn at altitude and at zero pressure (instead of in the thrust chamber).
Is it easier or more difficult to split the side of a composite booster?
Chuck, composites have been used in launchers before, but not for the entire shell. The reasons for their use are basically the same ones as in other aerospace apps: light weight and toughness. CFR composites just keep getting stronger. Here's some info from Hexcel:
@3drob: Inhalation of carbon fibers is not really all that dangerous, at least as far as inhalation of foreign substances goes. (When it comes to carbon nanotubes, it may be a different story). At any rate, the airborne concentration of carbon fibers produced by re-entry of a launch vehicle is likely to be extremely small -- the earth's atmosphere is really big, and fibers are likely to be widely dispersed by the time they reach ground level. Inhalation hazards are more of a concern for people working in composites manufacturing, where it is important to have adequate personal protective equipment.
The 100% solar-powered airplane Solar Impulse 2 is prepping for its upcoming flight, becoming the first plane to fly around the world without using fuel. It's able to do so because of above-average performance by all of the technologies that go into it, especially materials.
With major product releases coming from big names like Sony, Microsoft, and Samsung, and big investments by companies like Facebook, 2015 could be the year that virtual reality (VR) and augmented reality (AR) finally pop. Here's take a look back at some of the technologies that got us here (for better and worse).
Good engineering designs are those that work in the real world; bad designs are those that don’t. If we agree to set our egos aside and let the real world be our guide, we can resolve nearly any disagreement.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.