Class 244/97 - Buoyancy varying

Subclass of Class 244 - Aeronautics and astronautics
Definition: Devices and arrangements for controlling lighter-than-air
No. of patents: 79
Last issue date: 05/01/2012

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Number	Title	Issue Date
8167240	System and methods for buoyancy management in an airship An airship comprising a hull configured to be inflated with a first gas; a ballonet in the hull, the ballonet configured to be inflated with a second gas that is heavier than the first gas; a fan configured to draw the second gas into the ballonet; an inflatable lan...	05/01/2012
8091826	Aerostatic buoyancy control system A system allowing for the active management of aerostatic lift in buoyant and semi-buoyant aerial vehicles comprised of a high tensile-strength outer pressure cell of a given volume and an inner compression cell of only slightly smaller dimensions. The inner compres...	01/10/2012
7500638	Heavy lift airship A large heavy lift airship of lenticular shape divided into upper and lower convex shaped halves and configured with horizontal configurations in each half made up of four quadrants of inter-connected buoyant gas cells in which the interconnections consist of inline...	03/10/2009
7469857	System and method for altitude control An differential expansion system and method for balloon buoyancy control which includes a zero-pressure envelope and a superpressure envelope. A gas transfer device is positioned between the envelopes to facilitate the transfer of lift gases that are lighter than ai...	12/30/2008
7364118	Propulsion arrangement In order to achieve greater operational efficiency a propulsive arrangement is provided in which a relatively large number of small propulsive assemblies 9; 31, 32, 33 are provided in aircraft structures in particular the wing 7; 30. The assemblies ...	04/29/2008
7356390	Systems and applications of lighter-than-air (LTA) platforms Innovative new methods in connection with lighter-than-air (LTA) free floating platforms, of facilitating legal transmitter operation, platform flight termination when appropriate, environmentally acceptable landing, and recovery of these devices are provided. The n...	04/08/2008
7350749	Mass transfer system for stabilizing an airship and other vehicles subject to pitch and roll moments The invention relates to a mechanism to control the pitch and/or roll and/or center of gravity of a vehicle. The first embodiment is a track-based mass transfer system in which pathways are positioned along or radially terminate at a central horizontal plane of the ...	04/01/2008
7350746	Dual hull airship controlled by thrust vectoring A highly maneuverable aircraft with aerostatic lift consists, in particular, of a non-rigid airship (10) which can be piloted or radio-controlled; the airship (10) is sustained by helium and consists of two spindle-shaped elements side by side (11	04/01/2008
7341223	Hybrid unmanned vehicle for high altitude operations A hybrid aerial vehicle is optimized, for example, and not by way of limitation, to operate above 100,000 feet in altitude and provide persistent and maneuverable flight while carrying a wide array of communications and sensing payloads. The hybrid vehicle may use t...	03/11/2008
7341224	Miniature expendable surveillance balloon system A miniature surveillance balloon system is described that can be used in military and public safety situations for real-time observations. They are as small as feasibly possible, low-cost and expendable, and typically are deployed in clusters. Balloons may act indiv...	03/11/2008
7316718	Differential pressure-driven borohydride based generator An arrangement for generating hydrogen gas utilizes differential pressure to transport fuel and spent fuel components without requiring an electrically powered fuel delivery pump. ...	01/08/2008
7313362	High altitude airborne craft used as radio relay and method for placing said airborne craft on station The present invention relates to an aircraft and to a method of getting the aircraft onto station. According to the invention, said aircraft (1) includes propulsion means (2) capable only of enabling said aircraft (1) to move and to orient itsel...	12/25/2007
7303166	Highly maneuverable powered airship A highly maneuverable powered airship is disclosed. The powered airship may include an exterior shell having a front portion, a rear portion and a main axis; the exterior shell may be configured with an aspect ratio greater than or equal to 9:1. The powered airship ...	12/04/2007
7278607	Solar-powered aircraft A solar-powered aircraft uses solar energy to electrolyze on-board water to produce hydrogen. The hydrogen fills various on-board tanks, causing the aircraft to become lighter than air. The hydrogen is also used to operate a fuel cell which provides power for electr...	10/09/2007
7249733	Lighter-than-air aircraft including a closed loop combustion generating system and related methods for powering the same A lighter-than-air aircraft includes a gas envelope for containing a buoyant gas, and a propulsion system is carried by the gas envelope. A solar panel is carried by the gas envelope for powering the propulsion system when generating sufficient power. A closed loop ...	07/31/2007
7236885	Method and system for geophysical data acquisition on an airship A geophysical survey is conducted, using specialized instruments, to measure the gravity field by flying over a terrain of interest. A series of nominally parallel survey lines can be flown until a total region to be surveyed has been covered. The geophysical survey...	06/26/2007
7204049	Emergency drop system for an aircraft advertising display An emergency drop system allows ballasted advertising banner (14) if disconnected from an aircraft to descend slowly to the ground. Banner (14) is suspended below an aircraft by line (4) held taut by ballasted container (24). Static line ...	04/17/2007
7163177	Airship ballast system An airship ballast system includes an engine driven propeller and a cooling tube that is positioned coplanar with the propeller and outside its tip path. One end of the cooling tube is connected to receive exhaust gases from the engine while the other end is connect...	01/16/2007
7156342	Systems for actively controlling the aerostatic lift of an airship Various embodiments of the invention relate generally to systems for providing active vertical control of an airship. More particularly, at least one embodiment of the invention relates to a system for actively controlling the aerostatic lift of an airship by manipu...	01/02/2007
7150430	Internet linked environmental data collection system and method An environmental data collection system and method is provided having an internet link for providing an additional level of security for a remotely controlled data collection platform having a security alarm for protecting the platform and the environmental subject ...	12/19/2006
7151487	Method for measuring GPS air sensitivity and mobile terminal having function of measuring GPS air sensitivity A method for measuring an air sensitivity of a global positioning system (GPS) signal in a mobile terminal. A GPS signal value is obtained in the mobile terminal. The air sensitivity of the GPS signal value based on a reference GPS signal value is stored in a memory...	12/19/2006
7146925	Apparatus for varying vessel hull geometry and vessels made therewith An apparatus for varying the dimensions of a hull of a vessel comprising an arcuate truss assembly having a plurality of members pivotally joined. The arcuate truss assembly is operatively arranged to form a portion of the hull. The assembly is operatively arranged ...	12/12/2006
7137592	High-aspect ratio hybrid airship In one aspect, a hybrid airship including an outer shell, a plurality of helium filled gas envelopes, and an all-electric propulsion system can have a high-aspect ratio wing shape. In some embodiments, the hybrid airship may be launched using buoyancy lift alone and...	11/21/2006
7131613	High-altitude launching of rockets lifted by helium devices and platforms with rotatable wings A system is disclosed for lifting a rocket into the upper atmosphere and establishing forward flight at several hundred miles per hour, before the rocket engines are ignited and the rocket is released from the lifting system. The main subassemblies of this lifting s...	11/07/2006
7108229	Arrangement and method for the generation of water on board an aircraft An arrangement and a method are proposed for the generation of water on board an aircraft with the use of one or more fuel cells, whereby low-temperature fuel cells are provided as fuel cells. It is proposed that several single-cell or few-cell fuel cells may...	09/19/2006
7093789	Delta-winged hybrid airship In one aspect, a hybrid airship including an outer shell, a plurality of helium filled gas envelopes, and an all-electric propulsion system may have the shape of a delta-wing. In some embodiments, the hybrid airship may be launched using buoyancy lift alone and aero...	08/22/2006
7073749	High altitude reconnaissance vehicle An airship deployment system comprises an airship of unique shape having laminar flow over this shape to enable low power propulsion, capable remote control, comprising an inflatable body; a propeller assembly for station keeping and repositioning said airship and c...	07/11/2006
7055778	Apparatus and method for lighter-than-air aircraft An apparatus and associated method for launching and recovering a lighter-than-air aircraft are provided. The aircraft includes an envelope that is substantially filled before launch with a lift gas and a second gas. The lift gas and second gas are substantially sep...	06/06/2006
7017508	Hydrodynamically and aerodynamically optimized leading and trailing edge configurations A novel concept for a hydrodynamically and aerodynamically improved leading edge and trailing edge structure is primarily suited for high-speed motion, such as near Mach 1 and above, but also for slow-speed motion and for stationary operation, where stationary struc...	03/28/2006
6966523	Airship and method of operation An airship has a generally spherical shape and has an internal envelope for containing a lifting gas such as Helium or Hydrogen. The airship has a propulsion and control system that permits it to be flown to a desired loitering location, and to be maintained in that...	11/22/2005
6908702	Fuel cell for airship power generation and heating A neutrally buoyant airship, such as a blimp, contains a lifting body which allows the airship to remain neutrally buoyant in air and a fuel cell located in the airship. A method of generating power in the neutrally buoyant airship, comprising providing a fuel and a...	06/21/2005
6811115	Method and system for setting hull parameter of airship and method of adjusting ascension rate of the same A method comprises: launching observation means configured to observe upper air environment immediately before launching an airship to acquire ambient air data on the actual conditions of the upper ambient air including altitude, pressure, wind direction, wind speed...	11/02/2004
6811113	Internet linked environmental data collection system and method An environmental data collection system and method is provided having an internet link for providing an additional level of security for a remotely controlled data collection platform having a security alarm for protecting the platform and the environmental subject ...	11/02/2004
6698686	Airship A plurality of bulkheads (23a to 23d) are installed in a hull (21) so as to divide the interior space of the hull (21) into a plurality of compartments (ƊS1 to ƊS5) successively arranged along the axis (22) of the hull (21). The compartments (ƊS1 to Ɗ...	03/02/2004
6648272	Airship An airship has a gas bag for containing lifting gas, which gas bag is located within an outer envelope. The envelope, made of flexible material, is made rigid by the pressure of the gas in the gas bag. A hollow ring surrounds the gas bag and is coupled to...	11/18/2003
6619586	Thermal airship buoyancy controller An automatic buoyancy controller is disclosed for management of lift in thermal airship 20. Data from envelope air temperature sensor 34 and ambient air temperature sensor 38 are input to difference processor 46 which transmits the calculated difference s...	09/16/2003
6609680	High altitude airships A high-altitude airship has a non-rigid hull. On launch, the airship is partially inflated with a lifting gas. The partially inflated hull is less susceptible to buffeting and turbulence from lower atmosphere air currents during ascent. A ballast rotates ...	08/26/2003
6425552	Cyclical thermal management system A cyclical thermal management system is provided for responding to diurnal heating and nocturnal cooling cycles to maintain a high altitude platform in a geostatic position for long periods of time. The novel cyclical thermal management system utilizes so...	07/30/2002
6305641	Super-pressured high-altitude airship A super-pressured high-altitude airship flies in the stratosphere, is propelled against the wind by the power obtained through the photovoltaic conversion of the sunlight, and is used for a large-scale LTA (light-than-air) platform for environmental obser...	10/23/2001
6164589	Centerline landing gear for aerocraft A partially buoyant aircraft capable of transporting very large cargo payloads comprises a lifting body with an exterior airfoil configuration that includes internal structural support members for an exterior skin, the skin defining an internal volume for...	12/26/2000

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Class 244/97 - Buoyancy varying