ET3 uses standard off-the-shelf vacuum pumps to permanently remove air from the tubes. Most of the time the pumps will be turned off, unless to run for a while to remove any air that leaks in. Pumps running too often indicate that a leak needs to be repaired. Leak repair can occur from outside the tube without shutting down the system. NOTE: ET3 is NOT like pneumatic tube systems that rely on air movement and pressure differences to propel the capsules, the capsules are magnetically levitated, and propelled by linear electric motors.
How does ET3 utilize the vacuum? How do you make it work?
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