The Kansas Organization for Spacemodeling (KOSMO) is a group of families and individuals in Kansas that have a common interest in model rocketry. KOSMO is a chartered Section of the National Association of Rocketry (NAR).

Launch Status


Sat March 25, 2023

Ellinwood, KS

Current Launch Status — RED

Thu, March 23, 2023 — Once again the weather is not cooperating with our plans and we have decided to postpone the SpringFest rocket launch one more time. The new date will be next Saturday, April 1st

Mon, March 20, 2023 — The launch status for the Spring Fling launch this coming Saturday is yellow at this time. The weather forecast is calling for a moderately windy day and possible rain showers. So, we'll have to keep an eye on things and see how this forecast changes throughout the week. Check back here for more updates.

KOSMO Looking Forward to the 2023 Launch Season

Posted: February 19, 2023

The KOSMO launch schedule has been set for the 2023 season. We will once again start out with SpringFest on March 18th. This is a high-power rocket launch near Ellinwood, KS. Kansas weather in March is rather volitile so we have two alternative dates planned, the first for March 25th, and the second for April 1st. Stay tuned to the web site or our Facebook page for announcements concerning the launch schedule.

Please see the Events Page for the 2023 schedule. If you are interested in coming to one of our launches, take a look at the Spectators and Guests page for information.



Sat, Apr 1, 2023
Alt date: Apr 1
10:00am - 5:00pm
Ellinwood, KS
10,000ft FAA Waiver


Jan-Feb 2023

Check out the latest club newsletter. Click the image above.