L-1011 General Aircraft Characteristics: Wing Engine (25-5)

The L-1011-500 is powered by three RB.211-524B engines. Each engine has three compressors and three turbine assemblies. While the three spools rotate about a common axis, each is mechanically independent of the other two.

Each engine produces 50,000 pounds of thrust. 75% of this thrust is generated by the FAN (N1) due to the high By-Pass Ratio of 4.4 to 1.

The L-1011 is the quietest [well at least was at the writing of this document in 1972] of the new generation aircraft and currently meets all existing and planned community noise requirements. It accomplishes this by means of two significant features:

• Absence of FAN INLET GUIDE VANES
• Sound absorbing material in the inlet.

By the way, here is a link to Justin Wooglar's BLOG ... he is doing amazing stuff with jet engines in his backyard ... including a RB.211 !