Rocketry Online

Book Sale-Rocketengineer.bravehost.com

Rocketengineer.bravehost.com announces a book sale. For this week get The Next Shuttle and Rocket Science for $25. Visit the website for this special offer. A savings of $35. Own your own copy of these two books, the best references in decades.

Rocketengineer.bravehost.com

Giant Leap Rocketry Inc. Releases MAGNA-FRAME

Giant Leap Rocketry, Inc. has released its Magna-Frame. It is a composite airframe of high strength, grey vulcanized fiber interlaced with phenolic. There is a proprietary coating inside and out that seals out moisture. It is then high-temperature cured to create a high-strength composite structure.

Magna-Frame uses a military-grade vulcanized fiber for extreme strength (you'll know because it is grey). Phenolic is resistant to moisture and avoids the warpage of pure vulcanized paper tubes. The propriety coating further ensures that the airframe stays straight. According to Giant Leap, Magna-Frame is a high-performance tube that is light, inexpensive and safe.

It was successfully tested at a velocity of about 2000 ft/sec (approximately Mach 1.8). Magna-Frame is compatible with CA and epoxy adhesives. To learn more about Magna-Frame, log on to

www.giantleaprocketry.com

Wildman Extreme DarkStar

Wildman Hobbies has listened to their customers, and has heard loud and clear that they want a larger DarkStar. Here it is!

The Extreme Dark Star

4 inch Diameter 52 inch long fiberglass booster
75mm fiberglass motor mount
3/16 thick g10 fiberglass fins beveled
1/2 inch Baltic birch plywood centering rings
4 inch fiberglass coupler 11 inches long
2 inch long fiberglass Switch/Vent band
Fiberglass coupler and airframe bulk plates
4 inch fiberglass payload 24 inches long
4 inch 5-1 Von Karman (Aluminum tipped nose cone. limited to the first 20 sold)
Kevlar bridal
High Quality 9/16 tubular nylon shock cord
Sheer pins
Plastic rivets
All thread
Welded eye bolts
All of the nuts and washers needed

All this for $319.99! These are still in production and should arrive here starting the week of 07/19.

As an added bonus, the first 20 orders through 09/01/0201 will receive a coupon for a CTI 75 3 grain hardware set including the wrench for only $160 with you first CTI 75 2 or 3 grain reload order.

Wildman DarkStar Grows Up

Wildman Hobbies is pleased to announce the latest addition to their quality, high-performance fiberglass kit line -- the DarkStar 4.

This high-quality 4" kit includes a pre-slotted 4" fiberglass airframe, a 5-1 Von Karman nnosecone, 6 pre-beveled G10 fins and a 54mm motor mount.

As a special bonus, the first 20 kits will include a coupon for a free 3 grain Pro54 case with your next Pro54 reload order. That's an additional $65 value!

All this can be yours for $139.99. Call Wildman Hobbies to order today!

AeroTech Product Bulletin 2010-1: J1999N-P Reliability Issue

6/15/2010 AeroTech has become aware of a potential issue affecting the reliability of the J1999N-P "Warp-9™" reload kit that fits AeroTech, Dr. Rocket™ and Rouse-Tech™ RMS-54/1280 hardware.

During two rocket "drag races" flown at LDRS-29 held at Lucerne Dry Lake on 6/12/10 and 6/13/10 there were four (4) observed failures of RMS-54/1280 motors loaded with J1999N reloads. All incidents involved ejection of the forward and/or aft closure at or shortly after ignition. It was reported that some or all of these motors used Copper thermite or large pyrogen-tipped initiators for ignition. AeroTech believes that this and other factors may have contributed to the failures, but until AeroTech has performed additional research and investigation into the incidents we cannot yet arrive at a definitive explanation.

AeroTech's dealers are requested not to sell, and consumers are advised not to operate J1999N reloads until further notice. AeroTech is now in the process of designing and testing a revised version of the J1999N that will have demonstrated acceptable reliability, with specific instructions concerning approved ignition methods and assembly procedures.

Once the revised J1999N is approved by Tripoli Motor Testing (TMT), AeroTech anticipates that it will produce a "repair kit" that consumers possessing unfired J1999N reloads will be able to obtain at no cost through any authorized AeroTech high-power dealer. This kit will likely include one or more replacement propellant grains as well as additional components and revised instructions. More specific terms and conditions of the product upgrade will be forthcoming. As always, AeroTech will honor valid warranty claims for all its products including the J1999N.

Customers with questions concerning this product bulletin may contact AeroTech at 435-865-7100 or via email at customerservice@aerotech-rocketry.com. AeroTech appreciates its customers' patience and understanding as we work to resolve this issue.

AeroTech Consumer Aerospace is a division of RCS Rocket Motor Components, Inc., Cedar City, UT.

Sirius Rocaketry Announces New Deimos Kit

Sirius Rocketry Releases New Deimos Kit

NEENAH, Wisconsin USA -

Sirius Rocketry is proud to announce the immediate availability of its latest kit, the Deimos – Mars Exploration Vehicle.

The new Deimos is the latest addition to the Sirius Rocketry line of futuristic mid-power model rocket kits. The Deimos is a beautiful model of a futuristic exploration craft. The skill level 2 kit features multiple balsa nose and pod cones, a simulated rocket nozzle, swept-back-forward fins, rugged heavy-wall body tube and realistic full-color waterslide decals.

With its large size (almost three feet tall) the Deimos is a great demonstration rocket, featuring slow liftoffs and graceful flights. With a heavy-wall 24mm motor mount, the Deimos will accommodate a number of larger 24mm motors and reloads from D to F impulse. The large 24" parachute will bring the Deimos gently down to earth again.

The Deimos has many features that make it an easy kit to build and a fun one to fly:

- Heavy-wall body and motor tubes that stand up to higher impulse flights.
- Precision laser-cut hard balsa fins and plywood centering rings.
- Simulated rocket nozzle.
- Two full-color decal sheets make this another Sirius Rocketry signature kit and a stunning model.
- Durable Kevlar(tm) shock cord mount and generous elastic shock cord to soften the stress of deployment.
- 24" parachute for gentle recovery.
- A detailed 12-page instruction manual that Sirius Rocketry is famous for, which includes clear step-by-step illustrations as well as trademark Sirius Rocketry suggestions and tips that help you make the most of your build.

The Deimos is available now at an introductory price of $54.95 at www.siriusrocketry.com.

Since 1998, Sirius Rocketry has made hobby rocketry kits in the U.S.A. with the highest quality and attention to detail. Sirius Rocketry kits are available exclusively through the Sirius Rocketry website and through select worldwide retailers. Sirius Rocketry also carries hundreds of other products including a wide range of motors at their secure online web store. For more information, visit our website at www.siriusrocketry.com.

MadCow to Release Three New Kits at LDRS

Laguna Woods, California, USA - Madcow Rocketry will be announcing it’s the new 4" Fiberglass Rocket Kit Series at LDRS next week.

The new series will include a Little John, Black Brant II and Nike Smoke. Each kit features scale fiberglass nose cones, fiberglass airframes and motor tubes, G10 fins and centering rings. The Black Brant II includes a dual deploy altimeter bay. All of the new kits in the series will have cut vinyl decals to finish off that scale look.

All Madcow Rocketry kits are high quality, easy to build and fun to fly.

Contact Info:

Michael Stoop

Madcow Rocketry

24338 El Toro Rd E-134

Laguna Woods, California 92637

Phone: (949) 547-8847

order@madcowrocketry.com

http://www.madcowrocketry.com

Tripoli Announces Records Changes

Today, Tripoli Rocketry Association announced changes to how altitude records will be determined.

Historically, fliers used their own altimeter to determine the flight altitude. This has resulted in disputes over altitudes, due to variations in the altitudes reported by different brands and models of altimeters.

Going forward, records below 30,000 feet will use standard altimeters. Records about 30,000 feet will require GPS data to verify the flight. In addition, records will only be set using one of a standard set of altimeters, to be owned by the organization. Fliers will request one of the altimeters, make their flight, then return the altimeter to the organization, for data download and analysis.

Due to the need for a standard set of altimeters, the Tripoli Contests & Records Committee is requesting that interested altimeter manufacturers submit a bid. Full details can be found on the Tripoli website.

AeroTech Receives Additional CSFM Approvals

The California Office of the State Fire Marshal (OSFM) has issued classification approvals for three AeroTech high power single-use motors and five high-power RMS™ rocket motor reload kits, including the six recently-released Metalstorm™ sparky propellant motors and reloads.

The specific products approved are:

29mm High-Power Single-Use

HP-G75-4M (#77204) 29 X 124mm Metalstorm

HP-G75-7M (#77207) 29 X 124mm Metalstorm

HP-G75-10M (#77210) 29 X 124mm Metalstorm

38mm High-Power RMS

H170M-14A (#08170L) 38/360 Metalstorm

J340M-14A (#10340L) 38/720 Metalstorm

54mm High-Power RMS

K540M-14A (#11540L) 54/1706 Metalstorm

K375NW-P (#11375P) 54/2560 Warp-9™/White Lightning™ Boost-Sustain™

K480W-P (#11480P) 54/2560 White Lightning

The approvals allow the purchase and use of these rocket motor products by California consumers. A copy of the new California OSFM approvals will soon be available for download in PDF format from the Resource Library on the AeroTech website at http://www.aerotech-rocketry.com.

AeroTech Consumer Aerospace has a page on Facebook! Follow the very latest AeroTech news, information, product developments and testing at http://www.facebook.com/pages/AeroTech-Consumer-Aerospace/159005948954

AeroTech Consumer Aerospace is a division of RCS Rocket Motor Components, Inc., Cedar City, UT.

Tripoli and NAR Joint Statement Regarding Legal Fees

Trip Barber of the National Association of Rocketry and Ken Good of Tripoli Rocketry Association issued a joint statement today, regarding what should be the end of legal wrangling over fees from the successful case against BATFE regarding Ammonium Perchlorate Composite Propellant.

In the settlement, the organizations have agreed to an amount of $70,000, which is less than the $81,498 which was asked for in the final filing. In regards to settling for the lesser amount, the Presidents of the two organizations stated "The DoJ attorneys planned to challenge this amount in detail, which would have forced us into a series of cross-filings and potentially a court hearing, further increasing our legal expenses and postponing an end to this ten-year legal struggle. To avoid this and to bring a prompt end to this issue we have agreed to settle for a recovery of $70,000, which will result in a net of approximately $64,000 after final legal expenses are paid. One half of this amount will go to TRA and one-half to NAR."

This action brings to a close 10 years of litigation against the BATFE, in which hobby rocketry successfully demonstrated that APCP was improperly placed on the Federal Explosives List.