Welcome to (formerly Essence's Model Rocket Reviews or EMRR). is the home of almost 5000 reviews of rocketry kits and products. Written by visitors to like you, the reviews cover everything from low-power model rocket kits to high-power rocket motors.

The site's Flight Log allows you to record and share your rockets and their flights.  The Builds feature helps you document your rocketry projects. 

At, you'll also find a large collection of rocketry resources such as a list of rocketry clubs, a calendar of rocketry events, and large libraries of OpenRocket design files and Rocksim design files. A number of rocketry tools and calculators are available to help you design, build, and fly your rockets.

As you explore, you'll also find a number of fun things such as a huge library of rocketry videos and a collection of photo albums. Community

Note: The web site is down right now as the software is being updated.

The Community adds a new layer of social interaction to Log in with your registered email address and password to join the Community.

You can now manage your Flight Log at While you can continue to manage your Flight Log here (and the information is shared between the two sites), I encourage you to try using the new site.

The forms at for entering and editing flights are much better than the ones here and they will continue to be enhanced as time goes by.

See: What is Community?


The mobile site makes it easy to add flights to your Flight log using a smart phone or tablet. Visit:

The mobile site allows you to view and enter flights in your Flight Log and to view and add rockets to your Rocket Gallery using simple controls designed for smartphones and tablets. You must have an existing account which the mobile site will ask you to log into.

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Today's Featured Review

Robert Zubrin's The Case for Mars

Manufacturer:Free Press

Contributed by Robert A. Morstadt

After reading this book I can understand why there should be a strong emphasis for the manned exploration of Mars and why Mars should be the focus of our attention. By comparison manned exploration of the moon is really not that important. The moon does not have resources that can easily be exploited. It does not have an atmosphere, oxygen is not easily extractable from the lunar rocks, and there is no carbon in the environment. Even the lunar night/day cycle is not conducive to growing plants.

The book is long at about 350 pages. But, it starts out in an exciting way in the first chapter, which is only 18 pages long, with a manned Mars Direct program starting in the year 2020 and costing only 30 billion dollars to develop. Using current technology and a heavy-lift vehicle about the size of the Saturn V, a sequence of launches is started. The first launch is unmanned and carries a nuclear reactor as a power source and 6 tons of liquid hydrogen. After landing on Mars this hydrogen is converted into 108 tons of methane and oxygen from the Martian atmosphere (95 percent carbon dioxide) using gaslight technology and the nuclear power source.

This is enough fuel and oxidizer to provide land propulsion on the Martian surface and a trip home for the four astronauts that arrive about three years later using a similar size launch vehicle. Herein lies the key for the proposed Mars Direct program - to utilize as much as possible the Martian resources that are available.

Like early explorers that came to America, who didn't carry their air, food, water, and fuel with them to live permanently in the New World, so Martian explorers will use the resources of Mars. Even the thin Martian atmosphere, which is equivalent to the earth's atmosphere at about 100,000 feet, can be used for aero-braking. In fact, taking into account the Martian aero-braking and surface refueling, it is more efficient in terms of mission delta velocity requirements to go to Mars first and then go to the Moon rather than go to the Moon directly. Naturally, this route takes more time, but it is more efficient in terms of delta velocity.

For a cost of about $3 billion per year a four-man crew and a Martian habitat can be sent annually, building up a Martian base. Problems like radiation and zero gravity en route can be overcome and are not show-stoppers. Eventually, air-bubble shelters could be built to provide a shirt-sleeve environment using nuclear power and carbon dioxide in the atmosphere to make oxygen. The carbon dioxide can also be used to reduce iron oxide to make iron.

Using different processes other raw materials can be made. In the long-range view, Martian terraforming may be a real possibility provided there is enough carbon dioxide in the Martian regolith (soil, rock, etc.). It may be possible that by raising the Martian atmospheric temperature by a relatively small amount, enough out-gassing from the regolith may be available to raise the Martian atmospheric pressure to some appreciable fraction of one Earth atmosphere in 1,000 to 2,000 years. This could be accomplished by putting solar mirrors in orbit aimed at the Martian poles. Such an atmosphere would allow humans to walk on the Martian surface without a pressure suit, although a breathing apparatus would still be required. However, since the Martian day is only 40 minutes longer than an Earth day, plants would do just fine in the carbon dioxide atmosphere.

This is an exciting book to read and a "must-read" book for any space enthusiast. Real manned exploration in our solar system takes on a new meaning in this book.

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Today's Featured Flyer

John Chatham


Location: Demorest Ga.

Certification Level: NAR#83195SR

Club Memberships: SoAR #571


Ordered my first rocket in 1961 (I was eleven) from Estes when they(He) was still in Denver.  That scout on a 1/2A found the nearest tree!  I have flown mostly low and mid power( largest being an FSI F-100)  I have pushed the button on more than I count.  Live in North Georgia, belong to Soar.

Club Home Page: SoAR NAR section 571

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Today's Featured Photo

ROCK Launches

April 2013 Launch

DFR Tech Delta IV Heavy Launch

Photo by Roger Smith

Today's Featured Video

High Speed Launch LV2.3 October 17, 2010

View our collection of about 5,800 rocketry videos.

Featured Rocketry Blog Posts

Odd'l Rockets: SPUDNIK Flight Testing
I launched the SPUDNIK twice yesterday morning, both times with a A10-3t engine. Both flights were stable to about 100 feet but there was corkscrewing. The Odd'l Rockets Sputnik (with the 3" foam ball) flys vertical without any "coning" or corkscrewing. The problem is trying to drill out a straight 1/2" hole for the engine mount tube. If the line of thrust is off by a degree or two the rocket won't fly perfectly vertical. Add the uneven surfaces along the top and it probably won't fly without some spiraling. Drag and weight are other considerations. On both flights the model was nose down ...
[Read More in This Series]

Model Rocket Building: Estes Patriot Build #2056, Part 1, Parts
Everybody has built one of these, except me! This build will be a little different. At the bottom of each post I'll be keeping track of how long I take on each step. These are my personal build times, I tend to take longer on rocket building than most people. I don't keep track like this very often, it's a bigger effort to keep recorded build times. There will be upgrades. A BT-60 model at over 21" tall should probably be D engine capable. You can always drop in a 18mm adapter for smaller fields. A payload section will be made using the upper yellow tube section. All the parts: ...
[Read More in This Series]

Orlando Rocketry: Video of NEFAR's October, 2014, Launch
I’ve uploaded a video of NEFAR’s October launch to YouTube. I flew a DJI PLantom 2 Vision quadcopter to capture the event from an aerial perspective. The video below shows low- and high-power rocket launches as seen from above as ...
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Model Rocket Building: Art Applewhite MMX Bic Pen Rocket Build, Part 1, Parts
This will be a quick freebie. This is a high performance, MicroMaxx rocket made from a Bic pen. Art Applewhite has designed some great saucers, spools and monocopters First stop by: Check out all the spools, saucers and monocopters Look to the upper left, click on "Free Stuff" Read the Limitation of Liability, Click on "I Agree" Go to the Free Stuff page - Click on "MicroMaxx Rockets" Click on the "Bic StiC" Print out the instructions (with fin can) on 110 lb. card stock. You'll need a Bic StiC pen and hobby tools. Add a 1/4" dowel if you want make ...
[Read More in This Series]

Greg Smith's Blog: Der Red Mix mark II Skidfest at ROCTober 2014
After talking it up for over a year I finally flew my scratch-built Der Red Mix mark II on a full complement of seven burly Skidmark motors (as always switching to 720p in full-screen mode is the shit): A formidable liftoff featuring loud, flaming titanium granules: And notably angled ascent: I arrived at the lake bed later than I'd have preferred but the conditions were perfect all day with light, intermittent wind and perfectly clear skies. I had prepped all the electronics two months ago so I only needed to load up the seven Skidmark motors, set up the CD3 ejection system, mount the Flip ...
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Rocketry Deals

Product NameList PriceSale PriceDiscountStore
Estes 302267 18 inches Parachute$7.99$3.4956.32%
Estes Nike Smoke$79.99$39.4950.63%
Estes Partizon$69.99$35.4949.29%
Badger Air-Brush Company Minitaire Color Paint Set with Color Coat/Paint Retarder$271.40$144.1046.90%
Estes Ventris$64.99$35.4945.39%
Estes Recovery Wadding$7.99$4.4843.93%
Dremel 4000-6/50 120-Volt Variable-Speed Rotary Kit$269.58$152.2343.53%
J-B Weld Steel Reinforced Epoxy (10 oz.)$19.60$12.6535.46%
50 Model Rocket Projects for the Evil Genius (Book)$30.00$19.4735.10%

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