Author Archives: johnhare

johnhare

About johnhare

I do construction for a living and aerospace as an occasional hobby. I am an inventor and a bit of an entrepreneur. I've been self employed since the 1980s and working in concrete since the 1970s. When I grow up, I want to work with rockets and spacecraft. I did a stupid rocket trick a few decades back and decided not to try another hot fire without adult supervision. Haven't located much of that as we are all big kids when working with our passions.

Post a Day

john hare In helping Jon complete the post a day for a month celebrating 10 years of selenian boondocks, I found I’m not very good at nonspontaneous writing. When I have an idea that I’m passionate about and I write … Continue reading

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Lap Construction

probationary second string substitute apprentice relief bloggers’ helper in training john hare Everybody that reads my posts knows that I think most people get way too complicated with launch assist platforms. In my post last week I suggested a really … Continue reading

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SpaceX Downselect by Senate?

Second string substitute apprentice relief blogger in training john hare The various antics of our elected officials in Washington tend to bring into question their motives and loyalties. The commercial crew  cuts by the house that were cut even further … Continue reading

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Custom LAP

Second string substitute apprentice relief blogger john hare. In my last post I described a new type of turbojet based on my cage jet of years ago. The engine I described has the capability of good thrust and good fuel … Continue reading

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Cage Truejet

Second string substitute  relief blogger john hare. Some years ago I did a few posts about an air turborocket with the bladeing based on the squirrel cage fan. October of 2008 if you’re interested.  Some varieties of the squirrel cage … Continue reading

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Asteroids as Transportation Hubs

This is a sketch from a post I did in 2009  about moving asteroids using their own rotational energy to sling ISRU mass  to change their orbit. http://selenianboondocks.com/2009/09/moving-asteroids/ With Jons’ last post, I got to speculating about other ways of … Continue reading

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Turbinozzle

Sometimes the ideas I throw out are obscure and hard to communicate, and sometimes they are so blindingly obvious that they have been rehashed many times in the decades past. Since I have no feel for which is which, sometimes … Continue reading

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Small Tetherocket

Some years ago I posted an idea for combining tethers, rockets, and nuclear power to build an engine with very high Isp for orbital transfer operations. 750-850 seconds Isp with LH2/LO2 seemed and still seems possible. I am posting a … Continue reading

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Precursor to Station

The comments on the torus station post made it clear that I had skipped steps in suggesting a specific station type. One step is the investigation of exactly how many RPMs are acceptable for a working orbital facility. The acceptable RPMs … Continue reading

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Launching a Torus Station

A torus space station is one of the staples of future thinking. Launching it in one piece from the ground is not. It has however, been occasionally mentioned in various comments. Here are a few numbers on the idea a few … Continue reading

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