| 摘要 |
<p>1,140,320. Gas turbine engines. ENTWICKLUNGSRING SUD G. m. b. H. Dec. 12, 1967 [Dec. 22, 1966], No. 56477/67. Heading F1G. In a closable air intake for an aircraft engine having a guard grid to prevent the sucking in of debris through the air intake orifice, the guard grid is movable between an operation and an inoperative position and is connected to an air intake closing device so as to be necessarily moved into the operative position as soon as the air intake orifice is uncovered. The guard grid 60, Fig. 4, of the gas generator of a lift engine may be of cylindrical form and made up of longitudinal ribs intersected by transverse rings, and is attached to a closure cap 40. The longitudinal ribs serve as guides for longitudinal sliding movement of the guard grid on the cylindrical intake duct 70. When the closure cap 40 is moved by preferably hydraulically operated sliding linkage 65 to the position shown to uneven the air intake orifice, it carries the guard grid 60 to the operative position. Preferably, the guard grid is of stainless steel or is a plastics injection moulding. In the alternative arrangement shown in Fig. 6, a pivoted closure flap 41 carries an elbow-shaped guard grid 61.</p> |
