18 TOM SWIFT and His Thermo-Ion Jetpack

In novel 18 of this series, Tom Swift gets the call to put his inventive brains to work for Hollywood. A producer for one of the studios wants to resurrect the old movie series that featured a hero using a flying rocket pack. But, when Tom convinces him that roaring flames and something looking like a pair of fire extinguishers isn't going to work, he agrees to set his serial in the near future. That just leaves Tom with the task of creating a wearable, flyable backpack that can fly for a h...