I downloaded the 2024 ARC info and started to read through this year's rules. Highlights are:
- 820 ft target altitude (800 ft and 850 ft at the finals)
- 43-46 second duration
- Allowed Altimeters are Perfectflite Pnut or Firefly, Jolly Logic Altimeter one or Altimeter two
- One egg
- Airframe must use 2 different diameter tubes, each no less than 150mm (6 inches) long
- Upper tube diameter no greater than 57mm (2.25 inches)
- Lower tube diameter no less than 63.5mm (2.50 inches)
- All parts other than recovery wadding must return as one connected/tethered unit
- Total length no less than 650mm (25.6 inches)
- Max gross liftoff weight not to exceed 650 grams
- Egg and Altimeter may reside anywhere in the rocket
- Recovery by parachute
Should be fun!
Guy.
