Low/Mid Power Launches

Flyers 18 years and older must be a NAR or Tripoli member to fly.

THOR flies under NAR rules and regs for LOW POWER flights.  Please refer to the links at the bottom of this page for details.

2024 Launch Dates and Times:

Unlike high power launches, low power launches require a little flexibility.  For this reason, we do not set firm dates of launches, but try to plan launches approximately 3 days out from an acceptable weekend.  

The low power team will keep an eye out for acceptable launch conditions (winds less than 10 mph, temps of 45 degrees and rising, etc) and will make a decision on a launch day.

Launch days will be weekends not aligning with scheduled high power weekends.  We will attempt to have them on weekends, but as you know, some of the best flying days may be on a weekday evening.  It really just depends on Mother Nature.

We typically start at 9 am, but again if winds are diminishing, it could be an afternoon/evening start time.

Confused yet?  

The best thing is to be a registered member of THOR so you will be on the email when potential launch days are planned.  We will also try and update Facebook.

Below are VERY tentative dates the club intends to fly on, but see the above details for final details. 

March 10-Low Power Launch

April 13-Family Day, Low Power

May 25-Low Power Launch

June 8-NIGH Low Power Launch

July 13-Low Power Launch

Aug 10-Low Power Launch

Sept 14-NIGHT Low Power Launch

Oct 12-Low Power Launch

Field Location.  

Click Here for directions

Take HWY 75 Bay Road/Webster Blvd, turn west and its just past 18th st. 


1. Materials. I will use only lightweight, non-metal parts for the nose, body, and fins of my rocket.

2. Motors. I will use only certified, commercially-made model rocket motors, and will not tamper with these motors

or use them for any purposes except those recommended by the manufacturer.

3. Ignition System. I will launch my rockets with an electrical launch system and electrical motor igniters. My launch

system will have a safety interlock in series with the launch switch, and will use a launch switch that returns to the

“off” position when released.

4. Misfires. If my rocket does not launch when I press the button of my electrical launch system, I will remove the

launcher’s safety interlock or disconnect its battery, and will wait 60 seconds after the last launch attempt before

allowing anyone to approach the rocket.

5. Launch Safety. I will use a countdown before launch, and will ensure that everyone is paying attention and is a safe

distance of at least 15 feet away when I launch rockets with D motors or smaller, and 30 feet when I launch larger

rockets. If I am uncertain about the safety or stability of an untested rocket, I will check the stability before flight

and will fly it only after warning spectators and clearing them away to a safe distance. When conducting a

simultaneous launch of more than ten rockets I will observe a safe distance of 1.5 times the maximum expected

altitude of any launched rocket.

6. Launcher. I will launch my rocket from a launch rod, tower, or rail that is pointed to within 30 degrees of the

vertical to ensure that the rocket flies nearly straight up, and I will use a blast deflector to prevent the motor’s

exhaust from hitting the ground. To prevent accidental eye injury, I will place launchers so that the end of the

launch rod is above eye level or will cap the end of the rod when it is not in use.

7. Size. My model rocket will not weigh more than 1,500 grams (53 ounces) at liftoff and will not contain more than

125 grams (4.4 ounces) of propellant or 320 N-sec (71.9 pound-seconds) of total impulse.

8. Flight Safety. I will not launch my rocket at targets, into clouds, or near airplanes, and will not put any flammable

or explosive payload in my rocket.

9. Launch Site. I will launch my rocket outdoors, in an open area at least as large as shown in the accompanying

table, and in safe weather conditions with wind speeds no greater than 20 miles per hour. I will ensure that there is

no dry grass close to the launch pad, and that the launch site does not present risk of grass fires.

10. Recovery System. I will use a recovery system such as a streamer or parachute in my rocket so that it returns safely

and undamaged and can be flown again, and I will use only flame-resistant or fireproof recovery system wadding in

my rocket.

11. Recovery Safety. I will not attempt to recover my rocket from power lines, tall trees, or other dangerous places.


Installed Total Impulse (N-sec) ----Equivalent Motor Type ----Minimum Site Dimensions (ft.)

0.00–1.25                                       1/4A, 1/2A 50

1.26–2.50           A 100

2.51–5.00   B 200

5.01–10.00                            C 400

10.01–20.00   D 500

20.01–40.00   E 1,000

40.01–80.00   F 1,000

80.01–160.00   G 1,000

160.01–320.00   Two Gs 1,500