You are here:
- Home
- Science
- Science/Nature for Kids
- Model Rocketry
- Dave Landgraf
Model Rocketry/Dave Landgraf
All Reviews from Users
Column Headings: K = Knowledgeability C = Clarity of Response T = Timeliness P = Politeness
N = Nominated for Expert of the Month
| Date | User | K | C | T | P | N | Comments |
|---|---|---|---|---|---|---|---|
| 2009-07-17 | Mika | 9 | 10 | 10 | 10 | Yes | Thank you |
| 2009-05-07 | Melissa | 10 | 10 | 10 | 10 | Yes | Wow! Thanks for an amazingly thorough and relevant answer! It's all that I needed to get moving on this party, so I am very grateful. I will have to read you message over a few times and then I may have more questions, but I appreciate all the help you gave me! Thanks! Melissa |
| 2009-03-20 | scott | 10 | 10 | 10 | 10 | Yes | Thanks Dave! I appreciate all the information. I do have RockSim and the model was designed using it. The recommended delay is 6.9 seconds. I didn't even think about the booster ejecting the recovery suystem - I didn't think it would produce enough pressure to. Thanks again! |
| 2008-09-03 | Brian | 10 | 10 | 10 | 10 | Yes | Mr. Landgraf answered all my questions thoroughly and promptly. I would definitely recommend him for expert advice! |
| 2008-08-25 | Richie | 10 | 9 | 10 | 10 | Yes | |
| 2008-06-03 | Scott | 10 | 10 | 10 | 10 | Yes | Great help - I think Dave covered all my questions and a couple more, he knows his stuff. Thanks Again, Scott |
| 2008-05-18 | Penny | 10 | 10 | 10 | 10 | Yes | Thank you very much for your help. You have saved me lots of time. |
| 2008-05-01 | Jason | 7 | 10 | 10 | 10 | No | |
| 2008-04-05 | Kevin | 10 | 10 | 10 | 10 | No |
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
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.
©2009 About.com, a part of The New York Times Company. All rights reserved.