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Expert Profile: Dave Landgraf

Expertise:  I will be happy to take on questions about low-power rocketry in general, including rocket design, operating characteristics of blackpowder motors, low-power motor selection, rocket construction, aerodynamics, parachute and streamer duration competition, boost glide (and a little rocket glide), egg loft, altitude competition, and scale competition. I can help you with Barrowman stability calculations, but I am not a rocksim user. I know the basics of mid-power rocketry and small composite motors but I don't fly them much (I'd rather stretch my money by sticking with low-power). I believe I can explain many concepts in a way that just about anyone can follow (and maybe even over-explain?). I absolutely do not mind "newbie" questions one bit; the only bad question is the one you don't ask!

Experience in the area
I have flown model rockets for some 40 years, including a few early years of NAR competition. I have been active at the local club level as well as in the NAR. I enjoy designing and developing unconventional designs (the kind of thing you look at and say "it won't fly!").

Organizations
National Association of Rocketry

Publications
Model Rocketry (magazine)

Education/Credentials
I am an aerospace engineer who has worked professionally in the field for over 30 years. I have worked often with local school, church, and scout groups to lead introductory build-n-fly sessions.

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Average Ratings
Prestige Points: 210
Knowledge   9.50   Best of the best
Clarity of Response   9.83   Best of the best
Timeliness   10.0   Best of the best
Politeness   10.0   Best of the best
Number Of Questions
(in Past 24 Hours)
0
Max Questions to be Asked
(in 24 Hour period)
5
Total Questions
(since joining AllExperts)
20
Recent Reviews from Users
KnowlClarityTimePolitenessDate
1010101009/03/08
10101008/25/08
1010101006/03/08
1010101005/18/08
10101005/01/08
User Comments
Mr. Landgraf answered all my questions thoroughly and promptly. I would definitely recommend him for expert advice!
(Brian on 09/03/08)
Great help - I think Dave covered all my questions and a couple more, he knows his stuff. Thanks Again, Scott
(Scott on 06/03/08)
Thank you very much for your help. You have saved me lots of time.
(Penny on 05/18/08)
View All Comments
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Recent Answers from Dave Landgraf
2008-07-07  Where to launch??? Hi, Noelle, and welcome to the hobby! It is getting more and more difficult to find places to launch model rockets (as well as fly R/C airplanes, or run R/C cars, and many other hobbies). I cheat...
2008-06-02  sequential launch controller Hello Brian, I will say right up front that I am not great at circuit design, and there is probably only a 50/50 chance that anything I might sketch out would work as intended. I apologize if this sounds...
2008-06-01  D powered BIG rocket Hi Scott, Your plan sounds pretty good, with just a few safety measures. I really like "low and slow" flights too. I don't think there is much thrill to sending a rocket to a zillion feet---I mean,...
2008-05-16  black powder Hi Penny, I am not trying to be a wise-guy, but the black powder in Estes motors is made of...wait for it...blackpowder. Through the centuries, blackpowder (or gunpowder) has been made by many different...
2008-04-04  Locations for launches Hi Kevin, Welcome to model rocketry! You are asking a very good question. To do things in a completely legal, proper, ethical manner, you should check with your local town's fire marshal to make...
More Answers for "Model Rocketry"


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