As soon as he had eaten, Tom phoned Arv Hanson, who arrived at the lab in a few moments.
“You remember that idea I mentioned to Danny about molding all the transducers into a single continuous plastic sheet?” As Arv nodded, Tom went on, “Let’s try it, using Tomasite as the plastic.”
Tom picked up a pencil and quickly sketched
154 THE ELECTRONIC HYDROLUNG
out the production steps. By machine-spacing the transmitting and the receiving transducers as closely together as possible, with minimum clearance, the plastic coating could do an even better job of absorbing sonar pings than the hand-rigged model.
“And the leads from all the transducers can be combined into a single flat tape,” Tom ended. “That’ll make it simple to hook up with the electronic control unit inside.”
“Got it, skipper,” Arv said tersely. “It’ll take overtime to set up the job in the plastics department. But we ought to be rolling out the sheeting Tuesday.”
“That’s swell, Arv! Thanks!”
By midmorning Tuesday, Tom had his quality analyzer sonar completed and was showing Bud how the units worked.
“Boy, it looks simple enough the way you explain it, prof!” Bud said admiringly. “How soon can we try it?”
“Depends on Arv,” Tom replied. He picked up the phone and called the plastics department. To his delight, the sheathing was already being rolled out in quantity. Arv promised that by noon he would have enough of it available to coat a jetmarine.
“Nice going!” Tom said. “Shoot it out to the cargo-jet hangar as soon as it’s ready!”
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