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Can anybody decipher the above chart?

While widely used everywhere, the term “cardboard tube” is a misnomer. Cardboard consists of three kraft layers with the central layer corrugated. Its distinctive brown color, high strength, bleaching ability, longer fiber length, make it an attractive choice. The chemicals used during the...

+-20% ?

I opened up Estes ABC motors back in the day when I was 13. I've also removed the ejection charge and then used an eye dropper with a drop of water and dissolved the delay train to get booster motors. If you look at the backside of the nozzle and pop it off from the propellant grain you'll see...

Back when dinosaurs roamed the earth, they clusteted FSI F100's. Anybody cluster RocketFlites GH BP motors?

Wow that's quite the collection you got there

Gary thanks for that. Are they encased with clay too and bottom.?

I have a question about the phenolic inserts that Aerotech is putting into certain motors to prevent nozzle erosion. Can I assume these inserts are in the nozzle throat only? If that's the case , then these inserts have to be pretty small in diameter.? So the question becomes, where does one...

Consider this; https://www.mssqltips.com/sqlservertutorial/9186/schedule-data-collection-with-windows-performance-monitor/ In conjunction with the info provided here; https://stackoverflow.com/questions/13473761/perfmon-counters-to-check-memory-leak. You can watch various memory counters...

You can buy very thin Teflon film : https://catalog.cshyde.com/viewitems/-categories-ptfe-teflon-products-ptfe-teflon-films/ptfe-skived-film It can be used as a non+stick film over a mandrel or wrapped over the outside of a tube as a release film and then use some Dunstone heat shrink tape to...

I use Yandex

This is fantastic Patrick! 😁

I volunteer to be a beta tester.🤔😳😃

Nevermind

He's in CA. Of course.

You might want to read this : TR-11 Aerodynamic Drag of Model Rockets https://plans.rocketshoppe.com/pubs/Estes/estTR-11/TR-11.pdf

James, will the NAR be creating and publishing how to go about getting that waiver?

I have a carbon fiber tube/ 3d printed PETG/CF tower attached to a 3m 1010 rail and a modified Triton MSA200 support stand. The 3m rail is actually 3 1m pieces that are bolted together at launch site

Use a low viscosity Laminating Epoxy with 0.2 to 2.0 mm. Carbon fiber sheet to your fins I.e. "skin them" The 0.2 to 0.5mm can be cut with scissors and is conformable.