VTOL Aircraft having Multiple Wing Planforms

    公开(公告)号:US20220063799A1

    公开(公告)日:2022-03-03

    申请号:US17005194

    申请日:2020-08-27

    Abstract: An aircraft having multiple wing planforms. The aircraft includes an airframe having first and second half-wings with first and second pylons extending therebetween. A distributed thrust array is attached to the airframe. The thrust array includes a plurality of propulsion assemblies coupled to the first half-wing and a plurality of propulsion assemblies coupled to the second half-wing. A flight control system is coupled to the airframe. The fight control system is configured to independently control each of the propulsion assemblies and control conversions between the wing planforms. The aircraft is configured to convert between thrust-borne lift in a VTOL orientation and wing-borne lift in a forward flight orientation. In addition, the aircraft is configured to convert between a biplane configuration and a monoplane configuration in the forward flight orientation.

    Low observable aircraft having tandem longitudinal lift fans

    公开(公告)号:US11167844B2

    公开(公告)日:2021-11-09

    申请号:US16833628

    申请日:2020-03-29

    Abstract: An aircraft operable to transition between thrust-borne lift in a VTOL orientation and wing-borne lift in a forward flight orientation. The aircraft has a blended wing body and includes first and second engines, a binary lift fan system, first and second forced air bypass systems and first and second exhaust systems. The engines have turboshaft and turbofan modes. The lift fan system includes ducted fans in a tandem longitudinal orientation. In the VTOL orientation of the aircraft, the engines are in the turboshaft mode coupled to the lift fan system such that the engines provide rotational energy to the ducted fans generating the thrust-borne lift. In the forward flight orientation of the aircraft, the engines are in the turbofan mode coupled to the forced air bypass systems such that the bypass air combines with the engine exhaust in the exhaust systems to provide forward thrust generating the wing-borne lift.

    Fluidic Roll Control Systems for Use in Forward Flight

    公开(公告)号:US20210300538A1

    公开(公告)日:2021-09-30

    申请号:US16833635

    申请日:2020-03-29

    Abstract: An active flow control system for generating roll control moments for an aircraft during forward flight. The system includes right and left roll effectors disposed on a trailing edge of the wing. A pressurized air system includes a pressurized air source and a plurality of injectors operably associated with the right and left roll effectors that influence the path of airflow across the wing. Based upon which of the injectors is injecting pressurized air, the right and left roll effectors generate no roll control moment, generate a roll right control moment or generate a roll left control moment.

    VTOL aircraft having multiple wing planforms

    公开(公告)号:US11530035B2

    公开(公告)日:2022-12-20

    申请号:US17005194

    申请日:2020-08-27

    Abstract: An aircraft having multiple wing planforms. The aircraft includes an airframe having first and second half-wings with first and second pylons extending therebetween. A distributed thrust array is attached to the airframe. The thrust array includes a plurality of propulsion assemblies coupled to the first half-wing and a plurality of propulsion assemblies coupled to the second half-wing. A flight control system is coupled to the airframe. The fight control system is configured to independently control each of the propulsion assemblies and control conversions between the wing planforms. The aircraft is configured to convert between thrust-borne lift in a VTOL orientation and wing-borne lift in a forward flight orientation. In addition, the aircraft is configured to convert between a biplane configuration and a monoplane configuration in the forward flight orientation.

    Fluidic split flap systems for yaw control in forward flight

    公开(公告)号:US11142302B1

    公开(公告)日:2021-10-12

    申请号:US16833620

    申请日:2020-03-29

    Abstract: An active flow control system for generating yaw control moments for an aircraft during forward flight. The system includes right and left yaw effectors disposed proximate the right and left wingtips of the wing. A pressurized air system includes a pressurized air source and a plurality of injectors operably associated with the right and left yaw effectors that influence the path of airflow above and below the yaw effectors. Based upon which of the injectors is injecting pressurized air, the right and left yaw effectors generate no yaw control moment, generate a yaw right control moment or generate a yaw left control moment.

    Low Observable Aircraft having Trinary Lift Fans

    公开(公告)号:US20210300537A1

    公开(公告)日:2021-09-30

    申请号:US16833630

    申请日:2020-03-29

    Abstract: An aircraft operable to transition between thrust-borne lift in a VTOL orientation and wing-borne lift in a forward flight orientation. The aircraft has a blended wing body and includes an engine, a trinary lift fan system, a forced air bypass system and an exhaust system. The engine has a turboshaft mode and a turbofan mode. The lift fan system includes a plurality of ducted fans in a tandem lateral and forward orientation. In the VTOL orientation of the aircraft, the engine is in the turboshaft mode coupled to the lift fan system such that the engine provides rotational energy to the ducted fans generating the thrust-borne lift. In the forward flight orientation of the aircraft, the engine is in the turbofan mode coupled to the forced air bypass system such that bypass air combines with engine exhaust in the exhaust system to provide forward thrust generating the wing-borne lift.

    Fluidic Split Flap Systems for Yaw Control in Forward Flight

    公开(公告)号:US20210300532A1

    公开(公告)日:2021-09-30

    申请号:US16833620

    申请日:2020-03-29

    Abstract: An active flow control system for generating yaw control moments for an aircraft during forward flight. The system includes right and left yaw effectors disposed proximate the right and left wingtips of the wing. A pressurized air system includes a pressurized air source and a plurality of injectors operably associated with the right and left yaw effectors that influence the path of airflow above and below the yaw effectors. Based upon which of the injectors is injecting pressurized air, the right and left yaw effectors generate no yaw control moment, generate a yaw right control moment or generate a yaw left control moment.

    Fluidic Roll Control Systems for Use in Hover

    公开(公告)号:US20210300530A1

    公开(公告)日:2021-09-30

    申请号:US16833636

    申请日:2020-03-29

    Abstract: An active flow control system for generating roll control moments for an aircraft during hover flight. The system includes right and left roll effectors disposed proximate the right and left wingtips of the wing. A pressurized air system includes a pressurized air source and a plurality of injectors operably associated with the right and left roll effectors. Based upon which of the injectors is injecting pressurized air, the right and left roll effectors generate no roll control moment, generate a roll right control moment or generate a roll left control moment.

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