By Ned Gorski What Is a Whistle Rocket? I think a really impressive fireworks device speaks for itself, so here's a video of one of these whistling firework rockets in action. One-Pound Fireworks Whistle Rocket A whistle rocket does just that: whistles and screeches as it leaps skyward. The motor uses the same whistle fuel that was used in the How to make a whistle article. Whistling rockets are "hot." They leap off the launch pad and can really reach a seriously high altitude...