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Monthly Archives: December 2009
Latest Masten Update
Dave just wrote the latest Masten Update over on our MSS Project Blog. The update goes over some of our plans for the new year. Hopefully I’ll have something more to talk about soon.
Posted in Administrivia, MSS
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Why Not Just Fund the Program of Record?
Amid all the recent discussion of the Augustine Committee’s results, Mark Whittington asks a question that a lot of people in Congress seem to be asking: “Why not just pay for the current program since any new program is going … Continue reading
Electrodynamic Compound Tether
guest blogger john hare A variant on the compound tether is the electrodynamic tether with rotovator. In this one a long electrodynamic tether has solar panels and other counterweights high enough to get the center of mass to a 135 … Continue reading
Posted in Uncategorized
10 Comments
Ramjet Problems
guest blogger john hare Ramjets come up just about every time someone takes a fresh look at space launch. It seems such an obvious approach that very few of us have skipped looking into them. The trade studies that have … Continue reading
Posted in Uncategorized
39 Comments
Compound Tethers
guest blogger john hare This is not part of Kirk’s series on tethers. Unlike his professional tether work that just needs funding and hardware development, this is a concept that may have serious flaws that make it yet another hare … Continue reading
Posted in Uncategorized
17 Comments
Good News for Centennial Challenges?
Dave pointed out to me earlier today that it looks like Centennial Challenges is finally going to get more funding this year (see http://docs.house.gov/rules/omni2010/hr3288cr_divb_jes.pdf on page 182 about 3/4 of the way to the bottom). The new amount is the … Continue reading
Posted in NASA
6 Comments
MXER Tether Intro #1: Simple Untapered Tethers
So I’ve started out telling you that momentum-exchange tethers are great. Why? you might ask. Well, because a spinning momentum-exchange tether is capable of transferring a fair fraction of the orbital energy and angular momentum in its orbit to a … Continue reading
Posted in Space Tethers, Space Transportation, Technology
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Launch Escape
guest blogger john hare There is an increasing discussion of launch escape systems in the last few months. Most of them seem to focus on developing some sort of high acceleration tower to yank the capsule free in event of … Continue reading
Posted in Uncategorized
34 Comments
Cagejet Again
guest blogger john hare I received a disturbing email today. John Bossard at http://plasmawind.typepad.com critiqued my cagejet idea at my request. I have been down for various reasons for the past month or so and mentioned that the criticism had disturbed me … Continue reading
Posted in Uncategorized
15 Comments
Momentum Exchange Tethers — An Introduction
Anyone who’s interested in going to the Moon ought to take a serious look at the technology of momentum-exchange tethers. My own interest began back in 1998, when as a summer intern on the X-33 program at Lockheed Martin Skunk … Continue reading
Posted in Space Tethers, Space Transportation, Technology
10 Comments