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  1. Peartree

    Electron news no one noticed

    Startup Rocket Lab's Electron rocket launched a radar-imaging satellite yesterday but not only used a recoverable first stage, they used a "previously-flown" engine to do it. Other than Spaceflight Now and a few posts on Twitter (now 'X') I'm not seeing much fanfare, or even discussion about...
  2. Peartree

    Russian Moon Lander Crashes

    Apparently, as they were changing orbits to prepare for landing later in the week, Roscosmos lost control and the lander impacted the moon's surface. https://www.reuters.com/business/aerospace-defense/russias-moon-mission-falters-after-problem-entering-pre-landing-orbit-2023-08-20/
  3. Peartree

    Tool guys: What is this?

    My grandfather was a German immigrant that repaired turbine generators in-situ. I have inherited many of his tools. Among them was this measuring instrument. It's a little like an adjustable square. It has one screw adjustment that loosens to dlide along the long axis or tightens to lock in...
  4. Peartree

    Apparently this year's tourist tossing season is open

    Bison gores (stupid) Yellowstone National Park visitor and throws him into a tree. Okay, this particular video isn't new, but there have been two folks just this week. This is right up there with all the folks in Florida driving around the crossing gates and getting smashed by trains. I...
  5. Peartree

    One Million ISP?

    I can't say I can follow all the physics, but it's another (theoretical) run at using stable fission products for propulsion. https://www.nextbigfuture.com/2023/01/nasa-studies-aerogel-fission-fragment-rocket-200x-better-isp-than-chemical.html
  6. Peartree

    End of PayPal Friends and Family

    This may have been discussed, but i don't remember seeing it here so, in the interests if keeping everyone informed... While still available to consumer accounts, as of July 28th, business accounts no longer have a PayPal "Friends and Family" option. All business accounts must charge seller...
  7. Peartree

    Keychain Cam Question

    I know that there are a ton of different kinds of cameras for rocketry, spy cams that hide in your pocket and look like a pen, a clock on a shelf in your living room, and whatnot, but I haven't been able to find the form factor that I really want (not exactly for rocketry, but would likely be...
  8. Peartree

    Is anyone printing white decals?

    I've printed my own non-white decals before, and I know that I can buy white decal paper, but it's still hard to print white print on a clear background for applications on dark, or black, paint. I also remember that while ink for ALPS printers became unobtainium some years back. So, is there...
  9. Peartree

    Blast from the past

    Little by little we've been cleaning out our parents' house. My brother found several boxes of my stuff that was packed away decades ago, probably when I left for college. I've found old Star Wars trading cards, a big fat file full of stuff from NASA that I wrote and asked for in the late 70's...
  10. Peartree

    SpaceX: Bigger isn't always better.

    Relativity Space, a small launch startup aiming to fly its orbital rocket from Cape Canaveral for the first time next year, announced Wednesday it has signed a contract with Iridium for up to six launches of the company’s spare communications satellites. Since SpaceX has been launching...
  11. Peartree

    New document reveals significant fall from grace for Boeing’s space program

    Oh how the mighty have fallen... Full article here: https://arstechnica.com/science/2020/04/a-nasa-analysis-of-boeings-lunar-cargo-delivery-plan-is-very-unflattering/
  12. Peartree

    SpaceX Loses Third Starship Prototype

    I apologize if someone already posted this, but I looked and didn't see it anywhere. Full article here: https://spaceflightnow.com/2020/04/03/spacex-loses-third-starship-prototype-in-cryogenic-ground-test/
  13. Peartree

    We've lost Nettie Nettie Hunsicker

    Many of knew Nettie (Jeanette Keyes) Hunsicker. She's been fighting health problems for a while but her daughter posted this on Facebook just a little while ago: -_------------_------------------------------- There are so many people I need to call and let know but it's so hard. Last night...
  14. Peartree

    Costa Rica University rocketry team fundraiser

    In recent days, a team of students from the Costa Rica University have posted a plea for funds via a GoFundMe type site in violation of TRF's rules and the posts were removed from public view. In the background, I contacted some of the organizers of the ARLISS rocket competition and confirmed...
  15. Peartree

    Ham Radio Operators!

    Calling all Ham radio operators! As you may or may not know, I am on staff for the 24th World Scout Jamboree. There is/will be a Ham radio tent where young people from around the world (153 countries) will be able to experience the hobby and even talk to astronauts on the ISS. I stopped by...
  16. Peartree

    NASA to announce winner of lunar lander competition

    So NASA has a competition with the intention to design, build, and launch and soft land science experiments on the moon. The ultimate plan is to use these experiments to build toward a manned landing in 2024. Their stated intent is to launch these experiments twice per year, every year, between...
  17. Peartree

    Basement Find

    Since my Mom has turned ninety, my brothers and I have been looking in on her more often. I go over every Saturday or two, take her a couple apple fritters, chat, cook her lunch, and spend some time going through the ancient history (family and otherwise) that's in her basement, garage, etc...
  18. Peartree

    Truck crashes while carrying 16 missles

    ISP confirms crashed truck that closed down I-90 was carrying missiles The crash caused the highway to be closed for several hours on Friday. POST FALLS, Idaho — Update: A previous version of this article had a different name and age listed as the driver of the semi truck. The ISP issued a...
  19. Peartree

    From Dust to Thrust how we will make fuel on the moon and Mars

    My engineering professional society magazine (IEEE Spectrum) has a nice article about the process of mining and manufacturing oxygen and fuel for future Mars and moon missions here...
  20. Peartree

    Possible Alaska Launch by Astra Space Today (10/16/2018)

    From Twitter: @jeff_foust The FAA has issued a NOTAM for airspace closures in the vicinity of Kodiak Island tomorrow for “rocket launch activity”; presumably, another launch attempt by secretive Astra Space. https://bit.ly/2OsHuT5
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