摘要:
A blended wing body aircraft having a modular body having a body that includes a plurality of laterally-extending body structures. Changes to the cargo capacity of the aircraft is accomplished through the employment of body structures that are wider or narrower. Configuration in this manner provides the aircraft with a structure that is relatively strong and efficient. While the body structures of this embodiment are not shared across a family of variously sized aircraft, the base design of the body structures is readily modifiable to adjust for an increase or decrease in width associated with a desired change to the aircraft's cargo capacity.
摘要:
An engine arrangement (14) comprises a gas turbine engine unit (16) and first and second support members (18, 20). The support members (18, 20) extend from a structural component (24) of the engine casing (22) to support the engine unit in a position spaced from the body or airframe of the aircraft.
摘要:
The invention relates to aircrafts, in particular to aircrafts, which are embodied in a passenger, cargo or cargopassenger variants thereby making it possible to improve performance characteristics by improving the aerodynamic properties thereof. The inventive aircraft having a carrying fuselage comprises a wing, an engine, and a fuselage whose width considerably exceeds the height thereof. A lower surface of the basic and the tail parts of the fuselage have a caved-in form in a cross-section thereof. A lower surface of the flattened front part of the fuselage is arranged at an attack angle with respect to the longitudinal horizontal plane of the aircraft. In addition, the front part of the aircraft has a curvilinear form in the plan view, which successively passes from the narrow front part to the basic large part of the fuselage. A tail group is embodied in the form of a double tail fins which are mutually spaced at a distance of the fuselage width with respect to the longitudinal vertical plane of the aircraft and are mounted at an angle with respect to said vertical plane of the aircraft.
摘要:
Independently deflectable control surfaces are located on the trailing edge of the wing of a blended wing-body aircraft. The reconfiguration control system of the present invention controls the deflection of each control surface to optimize the spanwise lift distribution across the wing for each of several flight conditions, e.g., cruise, pitch maneuver, and high lift at low speed. The control surfaces are deflected and reconfigured to their predetermined optimal positions when the aircraft is in each of the aforementioned flight conditions. With respect to cruise, the reconfiguration control system will maximize the lift to drag ratio and keep the aircraft trimmed at a stable angle of attack. In a pitch maneuver, the control surfaces are deflected to pitch the aircraft and increase lift. Moreover, this increased lift has its spanwise center of pressure shifted inboard relative to its location for cruise. This inboard shifting reduces the increased bending moment about the aircraft's x-axis occasioned by the increased pitch force acting normal to the wing. To optimize high lift at low speed, during take-off and landing for example, the control surfaces are reconfigured to increase the local maximum coefficient of lift at stall-critical spanwise locations while providing pitch trim with control surfaces that are not stall critical.
摘要:
The boarding device consists of at least one tunnel (20) connected to the outside of the aerodynamic shell (12) of the aircraft. More precisely, the tunnel is attached to the trailing edge of the fairing (12) and it extends aft approximately parallel to the longitudinal axis of the aircraft. A door (22) closes off the opening between the passenger cabin (10) and the tunnel (20). The rear part (26) of the tunnel (20) is articulated and/or detachable. In order to evacuate the passengers in an emergency, the front, fixed part of the tunnel (24) can be fitted with an inflatable escape slide or an articulated floor.
摘要:
Disclosed is an aircraft, configured to have a wide range of flight speeds, consuming low levels of power for an extended period of time, while supporting a communications platform with an unobstructed downward-looking view. The aircraft includes an extendable slat at the leading edge of the wing, and a reflexed trailing edge. The aircraft comprises a flying wing extending laterally between two ends and a center point. The wing is swept and has a relatively constant chord. The aircraft also includes a power module configured to provide power via a fuel cell. The fuel cell stores liquid hydrogen as fuel, but uses gaseous hydrogen in the fuel cell. A fuel tank heater is used to control the boil-rate of the fuel in the fuel tank. The aircraft of the invention includes a support structure including a plurality of supports, where the supports form a tetrahedron that affixes to the wing.
摘要:
A method of transporting large numbers of passengers by air from a departure airfield to a destination airfield. The method comprises providing a large flying wing airframe, providing a plurality of passenger pods adapted to be loaded with passengers at a traditional airport gate facility, loading the pods with passengers, transporting the loaded pods to the airframe parked on the tarmac, attaching the loaded pods to the underside of the airframe, and flying the airframe to the destination airfield. The method further comprises detaching the pods from the airframe in the event of an in-flight emergency and deploying parachutes from the detached pods to lower them safely to the ground. A high density air transport system that embodies the method of the invention is also provided.
摘要:
A blended wing-body aircraft includes a central body, a wing, and a transition section which interconnects the body and the wing on each side of the aircraft. The two transition sections are identical, and each has a variable chord length and thickness which varies in proportion to the chord length. This enables the transition section to connect the thin wing to the thicker body. Each transition section has a negative sweep angle.
摘要:
This disclosure provides a solar rechargeable aircraft that is inexpensive to produce, is steerable, and can remain airborne almost indefinitely. The preferred aircraft is a span-loaded flying wing, having no fuselage or rudder. Travelling at relatively slow speeds, and having a two-hundred foot wingspan that mounts photovoltaic cells on most all of the wing's top surface, the aircraft uses only differential thrust of its eight propellers to turn. Each of five sections of the wing has one or more engines and photovoltaic arrays, and produces its own lift independent of the other sections, to avoid loading them. Five two-sided photovoltaic arrays, in all, are mounted on the wing, and receive photovoltaic energy both incident on top of the wing, and which is incident also from below, through a bottom, transparent surface. The aircraft is capable of a top speed of about ninety miles per hour, which enables the aircraft to attain and can continuously maintain altitudes of up to sixty-five thousand feet. Regenerative fuel cells in the wing store excess electricity for use at night, such that the aircraft can sustain its elevation indefinitely. A main spar of the wing doubles as a pressure vessel that houses hydrogen and oxygen gasses for use in the regenerative fuel cell. The aircraft has a wide variety of applications, which include weather monitoring and atmospheric testing, communications, surveillance, and other applications as well.
摘要:
An aircraft comprises a body portion and a pair of wings extending from either side of the body portion. An upward step is formed in the underside of the body portion in the center of the aircraft, and defines a rearwardly facing riser surface. The riser surface extends outwardly toward the wing tips, terminating substantially inwardly of the wing tips so that a majority of the length of the underside of each wing is uninterrupted by the riser surface. The step is located at the front-to-rear center of gravity of the aircraft, and provides an area of low pressure adjacent the riser surface to maintain the rear portion of the aircraft down. The aircraft can be constructed either as a full-scale or a small-scale aircraft.