Prev heroicrelics.org
Mitchell Indiana Site Index
Grissom's Mercury Helmet Gallery
Next

dscb0537.jpg

Walk-around of the helmet's microphone.

Picture 1 of 6.

The helmet communication system consisted of two independently-wired AIC-10 earphones with sound attenuation cups and two independently-wired AIC-10, newly developed, dynamic, noise-cancelling microphones. The microphones were installed on tracks which allow them to be moved back from the center of the helmet to permit eating and proper placement.

The Project Mercury space suit helmet originally had two microphones (for redundancy), while this helmet is displayed with a single microphone.

 
Grissom's Mercury Helmet microphone in Mitchell Indiana
Time picture taken Sun Sep 21 03:16:36 2014
Location picture taken Main Exhibit Gallery
Grissom Memorial
Spring Mill State Park
Mitchell, Indiana
Prev Grissom's Mercury Helmet Gallery Next