Patent ID: 6840478

Claim:
An aircraft comprising: a fuselage with a forward end, and aft end and two lateral sides; a pair of coanda each with an inner and outer end; a pair of upper wings each with an inner and outer end and a top surface and a bottom surface; and a pair of lower wings each with an inner and outer end and a top surface and a bottom surface; one of the coanda is disposed on either side of the fuselage with the inner ends attached to the lateral sides of the fuselage; one of the upper wings is disposed on either side of the fuselage with the inner ends attached to the lateral sides of the fuselage, located aft and above in relation to the coanda; one of the lower wings is disposed on either side of the fuselage with the inner ends attached to the lateral sides of the fuselage, located aft and below in relation to the coanda, and below and forward in relationship to the upper wings; the outer ends of the coanda, upper wing and lower wing located on each lateral side meet; wherein when there is an airflow across the coanda and wings, the coanda splits the airflow between the upper wing and the lower wing and increases density and velocity of the airflow across the top surface of the lower wing.