We start with a 6 million gallon pool that's bigger than a football field. A major space agency uses this pool to train astronauts from around the world, simulating the weightless conditions of working in low earth orbit.
The astronaut trainees put on their space suits and, through an umbilical of tubes and cables to the poolside tender positions, get their air, medical telemetry and communication needs. They all connect via standard 4-wire connections (line-level inputs and outputs to a matrix port in the main control server room). There are controllers at poolside and controllers simulating Mission Control Center-like consoles that guide the trainees and the scuba diver assistants through the paces of their exercises. A beautiful techno-ballet in the slow motion world of the underwater, weightlessness of simulation training.
Why Do Astronauts Use Training Pools?
Imagine you are all suited up in your cool, high-tech space suit. HAL900 has opened the Pod Bay door. You stand on the step, taking in the unbelievable view and....you step off into the abyss to do your spacewalk in order to fix an antenna on the other side of the Space Station. In the weightlessness of space, you turn your wrench to tighten the bolt on the antenna. But, if you haven't practiced your task while weightless, just as you move your body to turn the bolt....it's quite possible you might also turn the whole Space Station! Didn't know your own strength, did you?
Well, this training is why the astronauts do simulation training at the pool. Using Clear-Com's FreeSpeak II wireless and Eclipse HX digital matrix systems, the team is able to coordinate communications between the Control Room simulations, the Dive Boss' station, the medical team (who constantly monitor the astronauts' and assistant divers' vitals), and the technical coordinators, while maintaining clear and open lines of communications. This way, the task of learning how to work in weightless conditions can be run in a smooth, efficient and safe manner.
Wireless Work Flow
Wireless communication can be very persnickety, as we all know. In this decade, we are seeing the loss of wide swaths of the narrow UHF spectrum. As these bands are sold off to the highest bidder, we are all left looking for new places to use our small signals for mics, comms and IFB (interruptible fold back for talent and in-ear monitors).
Clear-Com's FreeSpeak II plays a big part in the workflow here. First off, the 1.9 GHz model keeps the comms well out of the way of other frequency traffic, both in the remaining UHF and the now very crowded 2.4 GHz spectrum. With that said, with the deployment of Frequency Hopping Spread Spectrum (FHSS) technology and recent Clear-Com innovations, the use of 2.4 GHz wireless systems are becoming more attractive. The FreeSpeak II 2.4 GHz has been chosen for some of these training facilities because of the redundancy transmission of the FHSS scheme, which helps with the immensity of the room and reflective nature of the architecture and the huge water surface reflectiveness.
The award-winning audio clarity of the FreeSpeak II wireless system makes for crisp and clear communications, in an environment where it's most vital, like simulated training courses for astronauts going into space. These expert technicians need a system that can adapt to their unique workflow and one that they can trust will work in any environment. Perhaps, one day......even in space.
Rom Rosenblum has always been a capable, yet rebellious audio-guy. Originally in the music recording business as an engineer, with a long Emmy Award winning career in live TV broadcasting, Rom worships at the altar of All Things Audio. As one of the Applications Engineers at Clear-Com, he works as a catch-all fixer for folks who need tech support, commissioning, systems design, product development, and sales support.