Aircraft with dual flight regimes
First Claim
1. An aircraft having a front wing and a rear wing, two longitudinal streamlined bodies attached to lateral portions of said wings, with each of said longitudinal bodies supporting a rotor (all figures except FIG. 5).
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Abstract
The aircraft is capable of two distinct fuel-efficient flight regimes: one is a vertical flight regime supported by two large two-bladed rotors with low disc loading located on right and left longitudinal booms. The booms extend between outboard regions of a front wing and inboard regions of a rear wing that has a larger span an area. The other flight regime is high speed up to high subsonic Mach number with the aircraft supported by wing lift with high wing loading, and with the rotors stopped and faired with minimal local drag contiguous to the booms. The longitudinal location of the aircrafts center of gravity, aerodynamic center and the center of the rotors are in close proximity. The front wing is preferably swept back, and the rear wing is preferably of W planform.
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Citations
20 Claims
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1. An aircraft having a front wing and a rear wing, two longitudinal streamlined bodies attached to lateral portions of said wings, with each of said longitudinal bodies supporting a rotor (all figures except
FIG. 5 ).
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19. A rotor having blades free of flapping articulation with blades that have tip portions incorporating metal with very high density, whereby said rotor has a substantially increased gyroscopic stabilizing effect in addition to its aerodynamic lift effects. (Part of
FIG. 6 ).
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20. An aircraft having a front wing, a rear wing, a central fuselage, and laterally extending right and left streamlined bodies between said wings with their root portions attached to said fuselage and with the outboard tips of said lateral bodies supporting a rotor.
FIG. 5 .
Specification