Scratch - The Lord of the Rings

Scratch - The Lord of the Rings Scratch

Scratch The Lord of the Rings By Dave Rose
Long before I was building rockets, a very small, tumble recovery rocket was introduced by Estes. It was the 1/2A powered Astron Sprite. To those not familiar with this rocket, I would like to explain a very unique characteristic of this design. When scaled up enough to be powered by a high impulse motor, the air flowing past the fin ring creates a high-pitched whistle when launched. This is ...