Patent ID: 11932386
Assignee: ISRAEL AEROSPACE INDUSTRIES LTD.
Field: Transport (Mechanical engineering)
Classification: CPC B  Y | IPC B

Claim 26:
27. The method according to claim 23, wherein step (d) comprises:
pivoting said aft mounted second propulsion units to provide an angular displacement of the respective thrust vector to a respective vertical position;
as the forward speed of the air vehicle is reduced, and a proportion of the control moments potentially providable by aerodynamic control surfaces of the air vehicle is reduced, pivoting the forward mounted second propulsion units partially towards the respective vertical position, thereby providing respective control moments to the air vehicle;
as the forward speed of the air vehicle is further reduced such that the aerodynamic control surfaces of the air vehicle become ineffective for controllability, pivoting the forward mounted second propulsion units fully towards the respective vertical position.