YLR-91 Engine (With Skirt)

Stafford is just brimming with Titan engines: In addition to the stand-alone LR-91 and LR-87 engine displays and the engines on the Titan II itself, the museum has not just one but two YLR-91 engines, one displayed with an ablative skirt (nozzle extension) and one displayed without.

As difficult as it is to find information on the Internet about the LR-91, there's even less available about the YLR-91. About all I can do is point you to my LR-91 info page and let you sort out any commonalities which you may find between the two engines.