| Patents for B64C 11 - Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft (3,644) |
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| 11/09/1989 | DE3822937A1 Propeller drive |
| 11/07/1989 | US4878809 Power source and control mechanism for propeller pitch control |
| 11/02/1989 | WO1989010300A1 Spinner ducted exhaust for pusher turboprop engines |
| 10/31/1989 | US4877376 Attachment of a rotor blade of fiber reinforced plastic to a metal rotor hub |
| 10/25/1989 | CN1036537A Sections for shrouded propeller blade |
| 10/25/1989 | CN1036536A Airfoiled blade |
| 10/24/1989 | CA1262409A1 Counter rotation power turbine |
| 10/11/1989 | CN1036182A Blade for high-performance shrouded propeller |
| 10/10/1989 | US4872484 System for controlling the flow of a fluid medium relative to an object |
| 10/05/1989 | WO1989009342A1 Rotary machine with non-positive displacement, for use as a pump, compressor, propulsion unit, generator or drive turbine |
| 09/27/1989 | EP0334737A1 Rotary non-positive machine, applicable as pump, compressor, propellor, generator or motive turbine |
| 09/26/1989 | US4869106 Governor checkout apparatus and method |
| 09/21/1989 | WO1989008580A2 Energy efficient asymmetric pre-swirl vane and twisted propeller propulsion system |
| 09/13/1989 | EP0332492A1 High-performance shrouded-propeller blades, and shrouded propellers provided with such blades acting as Fenestron tail rotors |
| 09/07/1989 | DE3805769A1 Tubular rotor |
| 09/06/1989 | EP0331603A2 Airfoiled blade |
| 09/05/1989 | US4863354 Nose cowl for a turbojet engine shaft |
| 09/05/1989 | US4863352 Blade carrying means |
| 09/05/1989 | US4863351 Airscrew or propeller for propelling an aircraft |
| 09/05/1989 | US4863347 Bladed rotor assemblies |
| 09/05/1989 | US4862763 Method and apparatus for manufacturing high speed rotors |
| 08/29/1989 | CA1258914A1 Propeller speed and phase sensor |
| 08/29/1989 | CA1258846A1 Aircraft propeller system |
| 08/15/1989 | US4856735 Wing sections, in particular lift-wing sections for aircraft |
| 08/09/1989 | EP0327435A1 Shrouded propeller blade profile |
| 07/26/1989 | CN1034174A Aircraft propeller blade retention |
| 07/25/1989 | US4850801 Aircraft propeller blade retention |
| 07/19/1989 | EP0324617A2 Propeller blade assembly |
| 07/13/1989 | DE3744582A1 Keel having wings arranged on both sides, in particular for ocean-going sailing yachts |
| 07/13/1989 | DE3743485A1 Verfahren zur herstellung eines raeumlich verwundenen rotorschaufelblattes A process for producing a spatially twisted rotor airfoil |
| 07/11/1989 | US4846629 Blades for high speed propeller fan |
| 07/04/1989 | US4844698 Propeller blade |
| 06/28/1989 | EP0322344A2 Aircraft propeller blade retention |
| 06/28/1989 | EP0322343A2 Propeller phase control apparatus |
| 06/27/1989 | US4842484 Blade gearing and pitch changing mechanisms for coaxial counterrotating propellers |
| 06/20/1989 | US4840540 Propeller whose blades are provided with slats |
| 06/01/1989 | DE3738216C1 Propeller blade mounting (bearing) |
| 05/30/1989 | US4834617 Airfoiled blade |
| 05/18/1989 | DE3737894A1 Propeller having adjustable blades (variable pitch propeller) |
| 05/16/1989 | US4830574 Airfoiled blade |
| 05/11/1989 | DE3736141A1 Flugzeugpropeller Airplane propeller |
| 05/03/1989 | EP0313944A1 Method to reduce the flight noise for aircraft provided with propellers moved by piston engines |
| 05/03/1989 | DE3734624A1 Propeller fan |
| 05/03/1989 | CN2036933U Rotary barrel type variable pitch propeller |
| 05/02/1989 | CA1253351A1 Blade carrying means |
| 04/18/1989 | US4822243 Bladed rotor assemblies and control means therefor |
| 04/12/1989 | EP0311514A1 Fixed and centrally attached fairing for a jet engine and jet engine with this equipment |
| 04/12/1989 | EP0311277A2 Propeller blade systems |
| 04/12/1989 | EP0311276A2 Bladed rotor assemblies |
| 04/12/1989 | EP0310621A1 Aircraft cabin noise control apparatus |
| 03/28/1989 | US4815939 Use in a gas turbine engine |
| 03/16/1989 | DE3729120A1 Propeller Propeller |
| 03/15/1989 | EP0306499A1 Torque equalizer for contrarotary shafts |
| 03/15/1989 | CN1031680A Airfoiled blade |
| 03/08/1989 | EP0306434A2 Airfoiled blade |
| 03/07/1989 | US4810691 Polypeptide cartilage-inducing factors found in bone |
| 03/07/1989 | US4810167 Composite aircraft propeller blade |
| 03/07/1989 | US4809498 Gas turbine engine |
| 02/28/1989 | CA1250534A1 Brake for counter rotating bladed members |
| 02/16/1989 | DE3723101A1 Helical blade or rotor blade for force and operating helical rotors and rotary wing rotors |
| 02/02/1989 | DE3724701A1 Screw (propeller) for gaseous or liquid media, especially an airscrew |
| 01/25/1989 | EP0300816A2 Propellor |
| 01/19/1989 | DE3814971A1 Gasturbinentriebwerk A gas turbine engine |
| 01/11/1989 | EP0298891A2 Pitch control capacitance coupling |
| 01/10/1989 | US4797066 Turbine wheel having hub-mounted elastically deformable blade made of reinforced polymeric composite material |
| 01/04/1989 | EP0297321A1 Propeller with slat equipped blades |
| 01/03/1989 | US4795308 Obstacle in front of a propeller |
| 12/28/1988 | CN88103525A Blade of composite materials and its manufacturing process |
| 12/22/1988 | DE3719800A1 Folding propeller device for motorised gliders |
| 12/21/1988 | EP0296014A1 Composite blade and its manufacturing procedure |
| 12/21/1988 | EP0295353A1 Rotorblade |
| 12/21/1988 | EP0295247A1 Device at members forming part of a turbo machinery and a method of producing such members. |
| 12/14/1988 | EP0294654A2 Composite spinner |
| 12/13/1988 | US4790725 Aerial propellers more especially for aircraft propulsive units |
| 12/13/1988 | US4790724 Aerial propellors more especially for aircraft propulsive units |
| 12/13/1988 | CA1246519A1 Pitch control system for variable pitch propeller |
| 12/06/1988 | US4789304 Insulated propeller blade |
| 12/01/1988 | DE3716326A1 Propeller |
| 11/22/1988 | CA1245205A1 Cuffed aircraft propeller |
| 11/15/1988 | US4784575 Counterrotating aircraft propulsor blades |
| 10/20/1988 | DE3640780A1 Ideal aerofoil section for the wings (vanes) of fluid-dynamic installations |
| 10/18/1988 | US4778344 Variable pitch mechanisms |
| 10/05/1988 | EP0284778A2 Fan blade, particularly for prop-fan engines |
| 09/27/1988 | US4774228 Polypeptide cartilage-inducing factors found in bone used in tissue proliferation |
| 09/27/1988 | US4773825 Air propellers in so far as the profile of their blades is concerned |
| 09/27/1988 | CA1242511A1 Propeller synchrophaser and mode logic |
| 09/22/1988 | DE3708159A1 Wing |
| 09/21/1988 | EP0282830A2 Device in a gas or fluid stream with a split airfoil to increase the efficiency |
| 09/20/1988 | US4772181 Bladed rotor assembly and a control system therefor |
| 09/20/1988 | US4772180 Aircraft thrust control |
| 09/13/1988 | US4770371 Fluid motor driven multi propeller aircraft |
| 09/01/1988 | DE3705378A1 Light-construction combination silencer unit for a propeller and exhaust gas having an inlet flow straightener and reflection-reducing outlet-flow flaps |
| 08/31/1988 | EP0280639A1 Pitch changing mechanism for fan blades |
| 08/09/1988 | US4762466 Carrier ring for a propeller blade system |
| 07/14/1988 | WO1988005009A1 Torque equalizer for contrarotary shafts |
| 07/12/1988 | US4756667 Pitch control capacitance coupling |
| 06/28/1988 | US4753572 Propeller pitch change actuation system |
| 06/14/1988 | US4750862 Modular propeller blade pitch actuation system |
| 05/26/1988 | DE3738785A1 Gegenlaeufig rotierende flugzeug-antriebsschaufeln Counter-rotating plane-drive shovel |
| 05/11/1988 | EP0267097A1 Blade-carrying ring for a fan with a large diameter |