Gorge Rocket Club Section 790

NRC events for the 2019-2020 Contest Year

Per rules 13.1.1 through 13.1.2 of the United States Model Rocket Sporting Code (USMRSC), the NAR Contest Board has selected the following 6 NRC events for the 2019-2020 contest year, including NARAM 62:

1/2A B/G

1/2A SD

1/2A HD

1/2A PD

1/2A ALT

B Payload

Per the USMRSC, NRC launches with scores to qualify for Event Specialist and National Awards for the 2019-2020 contest year can be held from August 4, 2019 (the day after NARAM-61) until June 30, 2020.

Approved Altimeters

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/2017/06/USMRSC_2019.pdf

  • Dates for the GRC 790 2019 Season Wyeast Middle School Launch dates: 

 Times for launch dates are from 9 am to 12 pm at the Northwest Small field.  Better known as the baseball field in front of the parking area where the soccer fields are located behind the WyEast Middle School Football field.

November                          16th         Saturday - NRC Contest 2019/20_2

December                           14th           Saturday - NRC Contest 2019/20_3

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

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

Check out the rocketry show at https://www.therocketryshow.com/
Check out the rocketry show at
https://www.therocketryshow.com/

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

http://www.spacesounds.com/

Hercules up on a G75-4
Photo provided by Jim Reed
Photo provided by Jim Reed

"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/

NAR http://www.nar.org/

nar_this_is_rocketry

http://wechoosethemoon.org/

Its a beautiful place for the hobby of rocketry

Its a beautiful place for the hobby of rocketry

dans-snake-jumper-1
Dans Snake Jumper Rocket

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:

Tripoli

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

Presentations

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

https://youtu.be/GXZEw7m-kIc