(Contributed - by Steve Ainsworth - 12/15/09)
I have known David Ketchledge longer than he has known me. After I first re-discovered rocketry in 1994, I was
fortunate enough to get a copy of his article on Vertical Trajectory Systems (VTS) in the now defunct HPR magazine.
Davids article provided the first steps for my efforts on building a rocket with an active Vertical Trajectory
System that allowed the vehicle to continue on a vertical path even passing through wind shear.
My road was arduous, in that many of the publications cited in his VTS article were out of print and difficult to
acquire. For you that problem has been solved. Davids new book Rocket Science includes pdfs of
these hard-to-find documents, and in my opinion, just the references are well worth the price of the entire book. David
has published the book as a pdf which allows us to purchase such a great resource for only $35.00
The book has information for any rocket enthusiast from beginner to seasoned people. Technical
details and numbers are provided in the references, and vehicle information is provided in the text. There is enough
here to chew on for quite a while.
I am proud to say that I was the first to purchase a copy. I encourage everyone to make this great investment.
Steve Ainsworth TRA 2454
Author of Vertical Trajectory System by Extreme Rocketry
A word from the Author:
After writing The Next Shuttle, it was my intention to do another follow on book called Rocket Science if
there was even a moderate success with the first book.
Rocket Science in 910 pages spans the areas of hobby rocketry and professional Aerospace Engineering for key
First it is essential to give young men and women who are just starting in Rocketry a technical resource that
represents some 50 years of experience. For those in Aerospace Engineering, Rocket Science is a detailed reference that
demonstrates how low cost vehicle test methods through Radio Control and High Power Rocketry have yielded positive
results. Leading senior members of NAR and TRA have flown boost gliders of the Bell X-1, North American X-15 and
Space Shuttle. Along with several lifting bodies like the NASA HL-10 and X-38.
During the 1960s Dale Reed at Edwards AFB flew experimental vehicles including the M2F1, X-33 and Space
Wedge. All accomplished at a fraction of the cost of full size prototypes and yielded significant design issues in each
craft. The M2F1 showed that at certain roll and pitch angles the vehicle would shed the leading edge lift vortex. A
trait that repeated iself years later in manned vehicles.
Thus its a proven fact that R/C and High Power Rocketry have made a positive impact in aerospace
Rocket Science as a book also reflects the work at SpaceX, XCOR Aerospace and Scaled Composites with a specific
chapter on the ongoing efforts and future potential of each design.
The world of 2009 is a flux of change both in government and commercial spaceflight. One expects the Orion will
fly in 2015 and we can reach the Moon again by 2020 and potentially Mars a decade later. We also include a copy of the
Augustine Report on NASAs return to the Moon.
To accomplish this, a new generation of space capable students and professionals is needed in Technology and
Engineering. Rocket Science lays out a foundation for the reader and as a reference. Like my first book, key NASA
reports are included in Propulsion, and vehicle development.
Rocket Science in 910 pages that gives you the technical tools, resources and engineering insight that has been
developed over decades. Besides the book itself the NASA documentation and software make Rocket Science one of the best
resources in Rocketry. Visit the ARA Press website or RocketEngineerbravehost.com to purchase the book. As always our
pricing is very low at only $ 35. Rocket Science has appeared on The Space Show and at NARAM - 51. Those individuals
who have viewed the book, come away impressed by the depth and detail. Rocket Science will be one of your best assets
in Rocketry today and into the future.
I fondly remember a poster from Apogee Components who is operated by Tim Milligan. The poster shows a Space
Shuttle lifting off and a boy holding a model rocket.
The caption reads:
The first step into Space takes a Model Rocket. Rocket Science is the road map to
achieve that all in one text. It is in essence a legacy to the future you will be a part of make it a good one.
Finally Harry Stine, the father of Model Rocketry asked each of the senior members to . Because each
new member we have, is worth our attention, guidance and assistance to be a success. Rocket Science will make the path
to your aerospace future brighter. Please stop in and see Rocket Science and I think you will be impressed as well.
Rocket Science includes a chapter on Orbital Mechanics with a comprehensive spaceflight simulator with vehicles
like the Space Shuttle, X-15, X-20 and Gemini capsule. The other software in the book gives you tools like LISA and
GRAPE3D for FEA along with solid rocket motor analysis.
You can find Rocket Science at http://www.rocketengineer.bravehost.com and soon at ARA Press we welcome your
Author of Rocket Science