tag:blogger.com,1999:blog-5992706309347178217.post7618494655543116290..comments2015-09-14T19:53:48.807-07:00Comments on Orbital Aspirations: The Japanese Lambda 4S Launcheredhttp://www.blogger.com/profile/17836602199553502584noreply@blogger.comBlogger12125tag:blogger.com,1999:blog-5992706309347178217.post-46850257618154049342015-07-16T20:36:48.140-07:002015-07-16T20:36:48.140-07:00I understand, thank you for the speedy replyI understand, thank you for the speedy replyAnonymoushttps://www.blogger.com/profile/02949970480314270872noreply@blogger.comtag:blogger.com,1999:blog-5992706309347178217.post-9642762078883856512015-07-16T18:53:00.925-07:002015-07-16T18:53:00.925-07:00It was so hard to piece together what information ...It was so hard to piece together what information I had in this article. I don't have any more details. It's been years since I researched the article and I can't find my original sources on the final stage orientation information. Maybe someone in Japan (or who travels to Japan) can research that and post it.edhttps://www.blogger.com/profile/17836602199553502584noreply@blogger.comtag:blogger.com,1999:blog-5992706309347178217.post-64433727458563842272015-07-16T18:17:23.357-07:002015-07-16T18:17:23.357-07:00First of all, I would like to say I love this post...First of all, I would like to say I love this post (it's a ton more useful than most sites with info on this brilliant rocket). I was wondering if you could elaborate more on how the fourth stage oriented itself in between spin down and spin up motors. It just blows my mind how bare bones and cost efficient this rocket seems. How involved was this orientation in the fourth stage? Anonymoushttps://www.blogger.com/profile/02949970480314270872noreply@blogger.comtag:blogger.com,1999:blog-5992706309347178217.post-31246323647657856362014-02-16T19:36:31.000-08:002014-02-16T19:36:31.000-08:00Sure, no problem.
Sure, no problem.<br /> edhttps://www.blogger.com/profile/17836602199553502584noreply@blogger.comtag:blogger.com,1999:blog-5992706309347178217.post-26914280030206649382014-02-16T18:03:10.922-08:002014-02-16T18:03:10.922-08:00Ed,
I'd like to link back to this page, as wel...Ed,<br />I'd like to link back to this page, as well as use that image for a little something I'm writing (in reading that sentence, it sounds remarkably spammish; trust me, it's not!). I find your analysis of the Lambda to be great, certainly the best I've found on the Internet, and I want to give credit where due for a goodly chunk of my research. Okay to proceed?<br />RobRRLittlehttps://www.blogger.com/profile/15682746790237246894noreply@blogger.comtag:blogger.com,1999:blog-5992706309347178217.post-76442285324251233612013-07-31T06:21:34.797-07:002013-07-31T06:21:34.797-07:00As far as I know, the Lambda 4S *IS* the lightest ...As far as I know, the Lambda 4S *IS* the lightest orbital rocket. The next lightest is the US's Vanguard launcher.<br />There was an error in my earlier calculations of the weight of the Lambda 4S vehicle. I corrected those and it absolutely *IS* the smallest launch vehicle (to date).<br /><br />The note at the top of the article points out:<br /><br />NOTE: It was kindly pointed out by Stephen Pietrobon that I had made an error in my interpretation of the mass table. The following is the corrected version of the analysis. (CORRECTED 12 August 2012)<br /><br />I apologize for any inconveniences my error has caused.<br /><br />Cheers,<br />Ed L<br />edhttps://www.blogger.com/profile/17836602199553502584noreply@blogger.comtag:blogger.com,1999:blog-5992706309347178217.post-19507467562130949272013-07-30T17:48:12.122-07:002013-07-30T17:48:12.122-07:00@ Ed. If the Lambda is not the lightest rocket eve...@ Ed. If the Lambda is not the lightest rocket ever launched to achieve orbit, what is? I have been trying to find this information out. EzraDutchhttps://www.blogger.com/profile/17631508357115873200noreply@blogger.comtag:blogger.com,1999:blog-5992706309347178217.post-59233437018115977552011-10-25T19:13:42.552-07:002011-10-25T19:13:42.552-07:00Oh, also, in reviewing the data on the Lambda 4S r...Oh, also, in reviewing the data on the Lambda 4S rocket, I see that it is *NOT* the smallest land-launched vehicle. The GLOW that I calculate is 28211 pounds but the Vanguard was only about 22,000 pounds GLOW.<br /><br />I had taken the word of several sources around the web for granted, but my analysis shows that they're wrong. The number that most people quote as the GLOW is really the Stage 1 weight plus the strap-on-boosters. This weight doesn't even take into account the upper stages.<br /><br />It's easy to see how people make the mistake, though, because the table from JAXA [<a href="http://www.isas.jaxa.jp/e/enterp/rockets/vehicles/l-4s/index.shtml" rel="nofollow">http://www.isas.jaxa.jp/e/enterp/rockets/vehicles/l-4s/index.shtml</a>]is a bit hard to make sense of.edhttps://www.blogger.com/profile/17836602199553502584noreply@blogger.comtag:blogger.com,1999:blog-5992706309347178217.post-71658600347168897842011-10-24T18:21:16.537-07:002011-10-24T18:21:16.537-07:00I found an error in my table and I corrected it. T...I found an error in my table and I corrected it. The Isp for stage 0 was wrong and the masses changed a bit.edhttps://www.blogger.com/profile/17836602199553502584noreply@blogger.comtag:blogger.com,1999:blog-5992706309347178217.post-25060708881898538662011-10-24T16:09:06.489-07:002011-10-24T16:09:06.489-07:00Well you know we are not talking about an exact du...Well you know we are not talking about an exact duplicate of the design! Just the basic size. There is no need to use the same guidance techniqueMonroehttps://www.blogger.com/profile/07756035471086234964noreply@blogger.comtag:blogger.com,1999:blog-5992706309347178217.post-67161489631721925632011-10-24T06:50:35.077-07:002011-10-24T06:50:35.077-07:00Well, the L4S was only marginally successful. It f...Well, the L4S was only marginally successful. It failed 5 out of 6 times.<br /><br />One could argue that the failures were due to development issues, but it appears obvious to me that the issue was the design. There was hardly any delta V margin and he guidance mechanism left much to be desired.edhttps://www.blogger.com/profile/17836602199553502584noreply@blogger.comtag:blogger.com,1999:blog-5992706309347178217.post-17861826268281170392011-10-23T17:29:31.133-07:002011-10-23T17:29:31.133-07:00I'll bite. I must say it's about time some...I'll bite. I must say it's about time someone other than me has taken a long hard look at the Lamda. Duh! My company Aeronautic Enterprises Inc. Is in the process of designing a modern version of the Lamda L-4. Our version is 47ft tall and uses motors built at our launch facility on Matagorda Peninsula, Tx. At an estimated cost of $350,000 real USD each to put 20kg payloads into LEO on a schedule of 2 per month. This is the most realistic approach for commercial space to begin putting payloads into orbit on a budget affordable enough for anyone that wants to do so. I have been working on the facility and the launcher now for 3 years mostly on my own as there are not many that have enough vision to actually do the work required to make it a reality. I have dedicated my life to the project and I wont give up until it becomes a reality if I have to do it alone. Anything else without tons of money backing it will fail. Why reinvent the wheel?Monroehttps://www.blogger.com/profile/07756035471086234964noreply@blogger.com