| | [Not displaying correctly? View web version.] | Peak-of-Flight Newsletter #615: | |
The article in this week's newsletter is about calculating fin flutter speed, and is written by John K. Bennet (engineering Professor Emeritus at the University of Colorado, Boulder). He reviews the previous works and corrects one little flaw that throws error in the calculated velocity where the fins start to flutter. He also includes a simple spreadsheet that does all the math for you. Also in This Issue: Rocket Plan - The "Triffid" The plan in this issue is a fantasy model called the Triffid by Steve Reigel. It is is long slender model that looks delicate, but it is more than strong because it has a combination of ring fins and tube fins. You'll see the completed model as flown, an isometric drawing plus the three view engineering drawing. There is also a parts list, pattern sheets and decal patterns that you can print out. And yes, there is a RockSim file too. | | Read the rest of this week's article, either on a downloadable PDF for printing out, or on our website (great for viewing on your phone)! Previous issues of our newsletter are found at our archive page. |
| Check out the latest products to hit Apogee's shelves! | Hermes HLV
Cluster Engine Rocket | |
With its cluster of 4 rocket motors that lift off together and three strap-pon pods that separate mid-flight, the Hermes HLV offers a one-of-a-kind flying experience unlike anything else on the market. It will rattle your retinas! It uses a core that starts as a BT-60 at the top, and necks down to BT-55 at the rear, which houses a 24mm motor mount. Add to that three BT-55 side-mounted pods, each with a 18mm motor mount, and this rocket truly is a Heavy Lift Vehicle (HLV). It has a nice sized payload bay at the top can hold your favorite payloads. Flies on either a single 24mm motor (try the new F41W motor shown below), or use a cluster of four motors for a spectacular flight. Fully equipped with strap-on booster hooks, four plastic nose cones, a plastic transition, laser-cut parts, vinyl decals and a colorful 24" diameter plastic parachute. Be the first in your club to try out this thunder producing beast. |
| Quest F41W Rocket Motor | |
The 24mm diameter x 95mm long Quest Q-Jet F41W rocket motor puts the power of a F motor in the same size casing as an E motor. With it's brilliant and massive white flame, this rocket motor gives a great kick to your rockets that will leave spectators speechless. The throaty roar is also a crowd pleaser. Comes in three ejection delays, 5, 8, and 11 seconds. |
| Li-Po Charger (USB) | |
Our new Single-Cell Li-Po battery charger is now available. What's nice is that it plugs into a USB port on your computer, which makes it very convenient for charging your batteries for dual-deployment. Plus it has the special JST connector that fits the dual-deployment batteries that we sell, so you won't need a special adapter cord. And best yet, the price is less than half of the old one we used to carry. This is a win-win for everyone! |
| 2023 Christmas Ornament | |
Relive the exhilarating memories of an unforgettable year with our 2023 Christmas Tree Ornament. Crafted with meticulous attention to detail, this ornament captures the essence of the iconic TTV rocket, symbolizing the spirit of exploration and adventure. Constructed from a high-quality laser-cut cardstock skeleton framework, the TTV Model Rocket Ornament offers a unique and engaging assembly experience. Simply punch out the precision-cut pieces from the card and fit them together like a captivating 3D jigsaw puzzle. With just a touch of glue, watch as the rocket takes shape before your eyes, ready to grace your Christmas tree with its awe-inspiring presence. Get several today for your friends and family to remind them that you'd love rocketry kits as your Christmas present. |
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| | Are You a Bio-Med Engineer? | |
My kid is a first-year Bio-Med Engineer-ing student, and needs to ask questions of a working Bio-Med Engineer for an intro class. Contact me if you can help answer questions. |
Payload Altitude Contest Flight The Apogee Frit kit is a single stage "payload altitude" contest rocket. It is useful on those contest days when the conditions are poor and you don't want to risk a 2-stage flight. It is a simple kit that comes with the NAR standard payload mass. On this simulation with a B6-6 motor, we're seeing where it might land when launching from Triopoli Mid-Ohio's site near South Charleston, Ohio. |
| Customer Testimonials: "Recently, I started ordering software, components, and tools from Apogee Components for TARC. I immediately noticed that their phone support is humane and very helpful. Support will always ask you what you want to accomplish before recommending. Nowadays is unreal to experience such high-quality support without a paid membership or similar for-fee arrangements. The web video instructions and newsletters are also very helpful when shopping, as they point to the parts you need and provide valuable engineering recommendations. Apogee Components customers can only benefit from the company's outstanding business acumen. I warmly recommend Apogee Components as a great company with excellent service."
-- Branimir Blagojevic
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| I'm now actively seeking writers for articles to appear in this newsletter. And I want unique and cutting-edge articles because that is what you want to read, right? I realize this, so to get articles from outside writers that have the same level of quality, I'm going to have to pay a lot of cash to make it worth it for them. So I've come up with a compensation package where I'll pay up to $350 for good how-to articles. Are you a writer, and does that interest you? That is a lot of cash! Far more than you'll get by writing for other magazines. And with over 23,000 worldwide subscribers, if you write for the Peak-of-Flight Newsletter, you'll gain a lot of notoriety. Writing for the Peak-of-Flight Newsletter is a great way to show off your rocketry projects and your technical expertise, at the same time as helping out other rocketeers. Imagine how great you'll feel knowing that you made a difference to the hobby. If you're interested in writing, see the guidelines on our site. | |
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