Preloaded engine inlet shroud

Details Preloaded engine inlet shroud Preloaded engine inlet shroud

1977-12-27

1981-02-10

Hart, Douglas

Rotary kinetic fluid motors or pumps

Axial flow runner with blades extending radially inward and...

Serial flow through inward and outward extending blade rows

60 3931, 60226R, 415 83, 415217, F01D 502, F02K 302

Patent

active

042498597

ABSTRACT:
A turbofan engine is provided with a flow splitter at the inlet of the compressor with preloaded inner and outer walls. The inner wall and outer wall are positioned generally coaxially of each other and form a generally hollow, annular shell structure which is stressed in the axial direction. The inner wall comprised of two axially separable ring sections is placed in compression while the outer wall is placed in tension. The axial stressing compensates for transient growth differentials due to thermals in the inner and outer walls, also for tolerance buildup between the components forming the walls and for deflections that are created by blow-off loads transmitted through the walls from inlet guide vanes.

REFERENCES:
patent: 2916874 (1959-12-01), Worobel
patent: 3330475 (1967-07-01), Dennison
patent: 3375971 (1968-04-01), Fitton
patent: 3580692 (1971-05-01), Mikolajczak
patent: 4008978 (1977-02-01), Smale
patent: 4015910 (1977-04-01), Harmon et al.
Mierley, 639 O.G. 935, Abstract No. 57,291, Oct. 1950.

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