but it’s just a model rocket, albeit a very big model rocket. The HV Arcas by Aerotech stands 56 inches (142 cm) tall and is mounted on a rigid rail used for launching high powered rockets. I will seek Level 1 certification this coming summer from the National Association of Rocketry in order to fly this impressive projectile on larger engines to several thousand feet in altitude. It’s important to have goals in retirement. Go big or stay home.