Episode 100!

The entire Rocketry Show team gather for Episode 100 to look back on some of their fond memories, and talk about their projects, and more! Here is a brief "100 Episodes" scrapbook! Daniel, James Barrowman, and CG! Col. Rick Searfoss Steve Eves   The n00b sanding fins during the show...                   Gleda Estes, Gheem, CG, and Vern Estes Virgin Islands TARC Team Gheem and his composite B motor from Quest Robin Thurman - AIA, CG and Gheem Gheem, Daniel, and CG at NARCON 2019

Workshop! With The Rocketry Show Guys

After a hiatus (you know, it’s 2020…), we’re back with The Model Rocket Show!

This episode is a classic “workshop” episode fans of The Rocketry Show have come to enjoy – and the N00b is joined by Jesse and Gheem from The Rocketry Show! CG is there, too, but just listening quietly in the background (you know how Gheem and the N00b can ramble on…)

In the first half of the show, we answer listener questions, including one from a Patreon patron which slipped through the N00b’s email for a while (sorry about that, Les!).

After our break, we get to talking shop with a fun, longwinded conversation which culminates in… MURDER!!!

…of the N00b’s Mercury Redstone escape tower.

A lot of rocketeers have been frustrated by a build over the decades, and sometimes smashing a piece which is getting your goat feels like the only solution…

99: Season 7 Premiere! – Cris Erving of Eggtimer Rocketry

We are pleased to have Cris Erving, founder of Eggtimer Rocketry  with us on this episode! We discus the Eggtimer products, and also give lots of tips and tricks to help you figure out how to solder one together! Some pointers: ) If you're a beginner, use a 20 watt soldering pencil for best results.  This one from Weller is a nice one: Weller soldering pencil           Fancy temperature controlled irons are nice, but not if you are a soldering newbie!  the wrong temperature settings will either not work well, or can destroy the electronic components you are trying to solder. 2.) Practice soldering things together first.  Cris says go ahead, and use the eggtimer kit for practice.  If that thought makes you nervous, then get one of these surface mount soldering practice kits. Surface Mount solder training kit. IMPORTANT:  We'd suggest reading your excellent Eggtimer Rocketry kit manual all the way through to get a feel for what you are practicing for!! 3.) To ensure success, use as little solder as possible!  The bigger the blob, the more likely it will flow to another pin, and short out your connections! 4.) Do not overheat.  Some parts can be damaged by having the soldering tip touching them for longer than 30 seconds.  In fact, this is a nice simple video that is pretty good: https://www.youtube.com/watch?v=Qps9woUGkvI Good luck!!

NAR Level 2 certification changes / Listener Questions and more!

Welcome to episode 98 (TRS-6.98) of the rocketry show! John Thompson joins us to talk about the NAR Level 2 certification changes that are in effect as of November 2020 The NAR and the Board of Trustees have been working diligently to support the update of the NAR level 2 testing.  It has not been updated since 2012 and quite a lot has changed for the better in the ever-expanding hobby. The new 2020 Level 2 Written Exam Study Guide will be available for download from the High-Power Rocketry page on the NAR website starting October 1, 2020. The 2020 Level 2 Written Exam Packets for Sections and Certification Teams will be available starting October 15, 2020. Information on obtaining the new packets will be made available before that date. The new 2020 Level 2 Written Exam use will start on November 1, 2020. Due to the new exam format, a new HPR Certification Application will also be available for download from the High-Power Rocketry page on the NAR website. The new application will also be included with the new exam packets. The 2012 & 2017 versions of the Level 2 Written Exam will be valid/accepted if taken on or before October 31, 2020. After that, only the 2020 version will be valid/accepted. A member failing the HPR Level 2 exam may now retake another version immediately. If the member fails a second exam, the member must wait a minimum of seven (7) days to attempt the exam again. The Level 2 written exam administrator/proctor must now be minimum Level 1 certified. Who can be on the certification team? (additional background) The certification team consists of two individuals who are a minimum of 18 years old and are members in good standing of the NAR. The certification team members must be unrelated to the applicant. Members of Tripoli, unless they are also members of the NAR, cannot participate on a certification team. At least one of the team members must be already certified to a level equal to the certification level being attempted, e.g., a team member must be certified at Level 1 to judge another individual’s Level 1 certification attempt. Level 1 certifications may be administered by a single NAR Level 2 certified individual; the two certified individuals requirement is waived in this case. Certification attempts must be witnessed in person by the certification team. Video recordings of a certification flight are not acceptable. We also take a couple Listener Questions - What should I do to prepare for a Level 1 certification attempt? - What attributes should a field or piece of property have for rocketry considerations? CG Fills us in on the results of his DEMO-3 flight CG announces the goals of DEMO-4, and unveils his Block 6B flight computer. CG's Block 6B Rocket Flight Computer (RFC-100), ready for mission DEMO-4 (top) CG's Block 6B Rocket Flight Computer (RFC-100), ready for mission DEMO-4 (Bottom) Gheem finds a neat product that helped him with his rattle can paint project Other topics discussed: The rocketry Show celebrates 6 years of service Some hints on the upcoming Episode #100  

Workshop Episode: CG’s ongoing electronics tests, Jesse’s Level 3 project

In this episode, CG talks about how his electronics developments have come along  Specifically, what he learned from the first test flight of Mr. Bean (DEMO-1 mission), and the successful CG and Mr. Bean second launch (DEMO-2) where his code & flight computer successfully controlled a flight event!  His journey to his Level 2 certification is underway!  Read the details here. CD and Gheem @ "Mission Control" Jesse's Level 3 project starts to take shape!  He gives us some details, though he's a bit secretive on the details right now! Another view of Jesse's L3 Rocket Jesse's tube glassing work on his L3 rocket project

University of Akron’s “Akronauts” rocket team

Welcome to episode 6.96! We are joined by the University of Akron's "Akronauts" rocket team! https://youtu.be/GdPte4BRgZU The following team members met with us for this episode: Team President - Emily Armbrust Chief Engineer - Blake Bowser Former Team President - Mattew Stanko Treasurer - Olivia Renkel Former Chief Engineer - Mattew Reppa Project Manager - Jon Davis The Akronauts formed in 2014, and have been involved in a number of national STEM focused rocket competitions, including NASA Student Launch(USLI), and Spaceport America Cup The group presents a fun and detailed overview of what their team is all about, and a couple of their recent competition projects. The UA Akronauts NASA Student Launch Overall Winners and Awards 2020 University Student Launch Initiative Top 10 Overall Winner: Vanderbilt University, Nashville, Tennessee 2nd Place: University of North Carolina at Charlotte, Charlotte, North Carolina 3rd Place: University of Alabama in Huntsville, Huntsville, Alabama 4th Place: University of Akron, Akron, Ohio 5th Place: North Carolina State University, Raleigh, North Carolina 6th Place: University of Notre Dame, South Bend, Indiana 7th Place: Auburn University, Auburn, Alabama 8th Place: Oregon State University, Corvallis, Oregon 9th Place: Purdue University, West Lafayette, Indiana 10th Place: University of Cincinnati, Cincinnati, Ohio You can visit their website at https://akronauts.org/

James Duffy – Scale Modeling, FAI, and more!

In this episode, we chat with James Duffy, an accomplished scale modeler and competitor in FAI international model rocketry competitions.

James’ main specialties in scale modeling are the Bumper WAC – an early American two-stage sounding rocket consisting of a captured German V-2 first stage with a WAC Corporal cobbled on top as a second stage…

Bumper 8 lifting off from Cape Canaveral
James Duffy’s scale Bumper WAC

…and the Little Joe test vehicle, which NASA used during Project Mercury to test the launch escape system (the Little Joe II was later used for the same purposes for Project Apollo) and heat shield.

One impressive model James has flown in international competitions is his 1/12 scale Little Joe.

We discuss scale modeling and get his advice, and James tells us about FAI international model rocketry competitions. The American team has made a bid to hold the World Championships here in the United States in 2023. This would be the first time the international fly-offs will have been held in the U.S. since 1992.

Also, check out Spacemonkey Models (CLICK HERE), James’ company selling the most detailed scale model V-2 available anywhere. It’s a static model (which means it doesn’t fly), but it can be converted to a flying model rocket with a conversion kit sold by Apogee Components (CLICK HERE to get it). You can also buy the Spacemonkey V-2 itself from Apogee.

I have one of the Spacemonkey kits, and it’s a gorgeous thing. James has a thorough video tutorial series for building the V-2 on his YouTube channel. CLICK HERE to go to the playlist.

The kit comes with four different decal sets, so you have what you need to build one of four different iterations of the V-2, and the decals fit almost perfectly to the Estes V-2, so with a Spacemonkey kit you have the decals to build three more flying models!

Gary Rosenfield and Aerotech’s High Power projects

Welcome to Episode 6.95! Gary Rosenfield joins us to talk about new high power rocket offerings from Aerotech, and to talk to us about high power rocketry as well. Gary Rosenfield He also talks about Hamster Dance competition that he has been into lately, and if you're looking for more information on that event, you can look here: http://www.rimworld.com/tripoligerlach/hamsterdance/about.html And at their new Facebook Group called Hamster Dance Flyers here: https://www.facebook.com/groups/690838108136308 After the interview, Jesse and CG talk about their projects. CG gives more information he has found in his post-test flight of his rocket electronics system, and talks about a spinoff project! CG's mini altimeter project Jesse has evolved his tube glassing techniques, and talks about CG Holding his mini altimeter. them, and much more!

July 2020 Workshop Episode

Welcome to episode 94 of The Rocketry Show We’ve been on a roll with great guest interviews lately. The team take a quick break from that this episode to focus more on the results of a few rocketry projects they’ve been working on! Jesse has been ‘fiberglassing’ a new kit, and building more rockets, but more importantly, recently launched his LOC Precision “Big Nuke”. He tells us all about those, and more! LOC Precision Big Nuke 4, which Jesse has reviewed on the show, flying on an Aerotech K550W to 3189ft! He finally got that in the air on July 17, 2020   Jesse is still putting finishing touches on a Executioner clone. Fiberglassed 29mm and full Dual Deploy Capable. Level 3 project planning including sizing, figuring weights, and which composites to use for each purpose!     Gheem has been building a beautiful X-15 kit, and he catches us up on where he is on that, as well as a few more projects. Gheem’s SNGAero X-15 Grande finishes and ready to fly!   Gheem’s original Estes Pro Series launch controller modified to use lipo batteries On July 25, 2020, CG finally got to test his Radio Telemetry system. Because of all of the “Covid 19 delays, this test ended up being a “full up” test, which means about 5 tests (each would normally have been their own launch) all happening on one launch. Liftoff of CG's Mr. Bean rocket, marking the first test flight of his flight computer / GPS / radio telemetry system! He’ll share how that went!   The receiver & antenna for CG's telemetry system. We also pull some of your emails from the Mailbag that we didn’t have time to get to on earlier episodes!

Gary Rosenfield of AeroTech and Quest Aerospace

In this episode, we talk with Gary Rosenfield, who founded AeroTech Consumer Aerospace in 1982. AeroTech makes ammonium perchlorate composite propellant motors, often referred to as simply “composite motors.” This distinguishes them from the traditional model rocket motors, which use black powder propellant.

AeroTech is known for making high power motors, up to the enormous M, N, and O impulse motors. But they also make low and mid power motors for model rocketeers.

A small selection of AeroTech reloadable motor casings

Around 2014, AeroTech merged with Quest Aerospace, a model rocket company which manufactured kits and black powder motors. The motors were rather similar to the Estes black powder motors, but included the much-loved Q2G2 igniters.

An Estes C6-5 on left, with a starter. An old Quest C6-5 on right, with the Q2G2 igniter.

Q2G2’s were fast igniters. That is, they required less amperage to fire, and with a small black pyrogen tip, they were great for igniting black powder clusters – configurations of two or more motors.

With clusters, it’s important to have all motors ignite simultaneously, or the rocket could leave the pad with one or more motors unlit. This can sometimes result in a less-than-straight flight trajectory, and it’s what makes clustering a fun challenge!

Following an accident in a port in China, through which Quest’s old motors were exported to the U.S., Quest motors and igniters became unavailable for a long time.

Bill Stine, who had founded Quest, challenged Gary to create an A-impulse motor with composite propellant.

Gary accepted the challenge, and after a long period of development and experimentation, the new Quest composite motors became a reality.

Dubbed “Q-Jets,” these little 18mm motors are the same length and diameter as standard A/B/C model rocket motors, but because they contain the more energetic AP composite propellant, Quest/AeroTech can get a D powered motor into the smaller sized casing.

A Quest Q-Jet D motor, top, is the same size as an Estes C engine, bottom. The narrow part sticking out on the right of the Q-Jet is the ejection charge well.

This is because AP propellant has a higher specific impulse than black powder propellant.

Q-Jets are fast, fun, zippy motors. And AeroTech has lots of different AP motors for rockets of all sizes.

You can get Q-Jet’s from our sponsor, eRockets.biz, by clicking here.

And you can get AeroTech motors from eRockets by clicking here.

And, hey, if you appreciate eRockets sponsoring The Model Rocket Show, let owner Randy know when you place your order! I’m sure he’d love to hear that his support is appreciated.