Model Rocket Launch RSVP Website: Motor Counts, a Pad Cap, and a Range Line

A model rocket launch breaks when the range has five pads and eight rockets are on the table, or when someone who said maybe arrives after the safety briefing and expects a flight the range safety officer never put on the roster. Motors, the pad time each rocket gets, and the recovery line you agreed to are set before the first launch. The officer does not open another pad because a friend decided to come after the roster closed. A maybe does not hold a pad.

You can create a model rocket launch RSVP that fills the pads in your window, records which motors are in the box, and stops when that roster is full.

Ask what this range will actually fly

Call the range safety officer or the club launch director before you send the link. Write down how many pads your group may use, how long the window is, how many rockets may be in the air, which motors are allowed, and how far the recovery area runs. If you have five pads from 10:00 to 11:30, one rocket in the air at a time from your group, and only A8-3 and B6-4 motors, those numbers are your cap.

A pad slot is one rocket that has already been built and can pass inspection. This outing is a launch, not a build party. A kit still in plastic does not get a pad, because glue is not dry and the officer will not wait. Each person may bring one rocket under the length the club set, for example 16 inches, and two motors from the approved list. If you bought a club pack of twenty B6-4 motors, assign them by name. Twenty motors is a hard count. A walk-up does not get one from someone else's pair.

Ask the field fee, whether a waiver is signed before anyone walks past the flag line, and the last time the officer will accept a name. Wednesday at 6 p.m. is a practical lock if motors have to be in the range box that night. If the club charges for a no-show after that time, print that rule on the page. Write the motors that are not allowed: no C motors, no reloadable casings, no composites. A rocket that needs a banned motor does not fly and should not take a slot.

Set a capacity limit on rockets, not on spectators. People behind the flag line do not take a pad if the park allows them and they are not flying. When the fifth rocket slot in a wave is taken, the form should say the roster is full. If you can fly two waves inside the ninety minutes, say so with a number, and still cap the names. Do not leave the roster open-ended.

The range line is a distance, not a vibe

Put the recovery rule on the page in the officer's words. A typical small-field line is: rockets come down inside the marked area, and you do not launch if the wind would drop them in the parking lot or past the tree line. Ask the wind limit. Twelve miles per hour is a common cutoff for A and B motors on a short field. Write the number. People can decide before they claim a pad whether they can chase a rocket in that field.

Put the weather plan next to that number. Wind over the limit, a cloud deck the club treats as too low, or lightning inside the officer's rule cancels the window. Name the time you will send the go or no-go, for example 8:00 a.m. A cancelled window does not move to the parking lot.

The briefing is the ticket

Collect an arrival window that matches the briefing, not a loose morning. The window might be 9:30 to 9:40 for a briefing at 9:40 and a first launch at 10:00. Write what happens if someone is later than 9:40: they do not fly in this window, even if a pad looks empty. The officer does not repeat the briefing for one car.

Ask the age rule and write it next to the question. A common club line is that anyone under 16 needs an adult on the waiver who stays at the range. That adult is not a second rocket unless they have their own slot, their own rocket, and their own motors. A parent who is only supervising stands behind the line. Put a phone on the form for that adult.

The moment the roster is locked

The meeting point is the flag line the officer named, with the lot name if the park has more than one. Put the host's phone on the page. A screenshot of the invite is not a pad assignment. The officer matches names to rockets and to the two motors listed for each person.

If you allow a guest, that person needs their own rocket line, their own motor count, and their own arrival window. Track them as a separate yes. One form that hides an extra rocket will blow the pad count and the motor box. Say that on the page. Children count as flyers only if they have a rocket on the roster and the adult the rule requires.

After Wednesday at 6 p.m., a late yes is a call about a scratch, not a promise of another pad. Keep standbys off the officer's roster and tell them they do not have a flight until you write back. A maybe does not hold a pad.

Export the list the morning of the launch: attending or not, rocket length, motor types and counts, age and supervising adult, arrival window, and phone. A model rocket RSVP is finished when every pad slot has a named rocket, the motors match the list the officer approved, and a late car knows they are watching from behind the flags.