Gorge Rocket Club Section 790

Club Trailer sold.

launch pads for sale.

I’m retiring next year and will travel. Need to clear out a lot.

The reloadable hardware is not for sale. Everything else in the shop is up for sale. This year it’s going to be sold and gone for good. !

Calendar of Events

Contest Advice

http://www.nar.org/contest-flying/competition-guide/nar-rocketry-competition/

For information on the new contest book, here is the link:

https://www.nar.org/wp-content/uploads/2021/06/USMRSC_May-2021.pdf

If you have any questions please feel free to contact:

gorgerc790@gmail.com

https://www.nar.org/board-of-trustee-meeting-minutes/

Daniel Peirce did a remarkable job with the Semroc Saturn 1B rocket

http://wgvunews.org/post/national-association-rocketry-festival

http://www.spacesounds.com/

“Congratulations to Daniel Peirce for Certifying Level 1”

Daniel successfully launched his Mad Cow Honest John rocket on an H128-10W with great results:

Welcome to the Gorge Rocket Club Section 790 website.

If you have any questions please feel free to contact me: Thompsonje@gmail.com

  My Background

What is Thrust to weight ratio?

To safely launch a rocket the thrust to weight ratio should be at least 5 to 1

For example, if a rocket weighs 0.4 kg, and the motor has a thrust of 15 Newtons, is this safe?

Answer: The weight of the rocket is 0.4 x 9.8 = 3.9 N. Thrust is 15 N. The thrust to weight ratio is thus 15:3.9, or 3.8:1. This is less than 5:1 so the launch would be unsafe.

http://apollo17.org/

 http://www.nar.org/

nar_this_is_rocketry

http://wechoosethemoon.org/

Rocket History Quiz:

early-rocketry-development-quiz

For the answers, email me:-)

If you have any questions please feel free to contact me: Thompsonje@gmail.com

High Powered Organization for those interested is:

http://www.tripoli.org/

What is this thing called World Space Modeling Championships:

Intro to rocketry part 1:

intro to rocketry part 2:

intro to rocketry part 3:

Propellant Types:

igniter installation:

Interesting site called “The Orbital Mechanics”

http://theorbitalmechanics.com/about/

Rocket Engineering and Science Technologies

Slide Rule Museum

1 Newton = 0.2248 pounds

1 Pound = 4.448 Newtons

https://www.nar.org/site/narcon-2019/presentations/#

Estes has a new video that demonstrates how their solid BP motors work:

https://youtu.be/GXZEw7m-kIc