摘要:
A lubricating pump (1) having a first stage (5) and a second stage (10); the first stage (5) in turn has an intake (6) connectable hydraulically to a tank (4) of lubricating fluid, and a delivery outlet (7) connectable hydraulically to a lubricated member (3); the first stage (5) compresses the lubricating fluid from the tank (4) to a pressure for supply to the member (3); the second stage (10) in turn has an inlet (11) connectable hydraulically to a casing (9) housing the member (3), and an outlet (13) connectable hydraulically to the tank (4); the second stage (10) feeds the lubricating fluid in the casing (9) back into the tank (4); the second stage (10) is a Roots type, and has a first and a second rotor (31, 32) rotating about respective axes (B, C) to feed the lubricating fluid from the inlet (11) to the outlet (13); and the first and second rotor (31, 32) are operated by the first stage (5).
摘要:
A device (1) for protecting an aircraft component from collision with a flying object (9), the device having : a main member (2) rotating about an axis (A) and subject to collision with a flying object; and diverting means (8) connected angularly to the main member (2), also subject to collision with the flying object (9), and designed, in the event of collision of the main member (2) with the flying object (9), to reduce the axial momentum of the flying object (9) and divert the flying object (9) radially with respect to the axis (A).
摘要:
A transmission joint (1, 1', 1", 1"') for angularly connecting a first and a second member (2, 2', 2"; 4, 4', 4", 4"'), and having a coupling member (5a, 5b; 5a', 5b'; 5a", 5b" ; 5"') interposed functionally between the first and second member (2, 2', 2"; 4, 4', 4", 4"') and extending about an axis (A); the coupling member (5a, 5b; 5a', 5b'; 5a", 5b"; 5"') has : a first portion (6, 6', 6", 6"') connectable angularly to the first member (2,2',2''), a second portion (7, 7', 7", 7"') connectable angularly to the second member (4, 4', 4", 4"') and located radially outwards of the first portion (6, 6', 6", 6"'), and an intermediate portion (8, 8', 8", 8"') interposed radially between the first and second portion (6, 6', 6", 6"'; 7,7',7",7"') and elongated in a direction (D) crosswise to the axis (A); the intermediate portion (8, 8', 8", 8"') of the coupling member (5a, 5b; 5a', 5b'; 5a", 5b"; 5"') has, from the first portion (6, 6', 6", 6"') to the second portion (7, 7', 7", 7"'), a first portion (9, 9', 9", 9"') decreasing in thickness crosswise to the direction (D), and a second portion (10, 10', 10", 10"') of constant thickness. ( Figure 2 )
摘要:
A helicopter (1) having a fuselage (2); and two rear wings (6) located on opposite sides of the fuselage (2) and having winglets (7), each projecting transversely from a free end of the relative wing (6).
摘要:
There is described a hub (2) for a helicopter rotor (1), having a main body (4), and a number of connecting members (5) projecting from the main body (4) and for the connection of respective blades (3); the main body (4) and the connecting members (5) being defined by separate components connectable to one another by releasable fastening means (6).