From Good Old Wikipedia: In 1955, Bell Aircraft was requested by both the USAF and the US Navy to develop a VTOL/STOVL supersonic, all-weather fighter-bomber and defence interceptor. The project was highly ambitious and was designed to fulfill a multitude of roles for two different services. The aircraft was designated the Model 2000, and was offered in two different versions – the D-188 for the Navy and the D-188A for the Air Force. Bell had rather optimistically called the Navy version the XF3L-1 and the Air Force version the XF-109, although neither of these designations were official. In 1959, Bell teamed with Convair to form a joint weapon systems management team in order to push the XF-109 program. On 5 December 1960, Bell publicly showed off the design as the XF-109 – the Air Force version, as the Navy had lost interest the year earlier, however in the spring of 1961, the US Air Force canceled the program and no examples were built.

Activate groups 1+2 and VTOL up for takeoff, then tilt the nose down while powering up group 3 and putting VTOL back to center.

Trim for flaps.

You can modify the aircraft to carry only missiles or only bombs to convert it to the ground attack role.