An overview of rotary wing evolution and innovations over the last 20 years was presented. This overview is provided from a drive system perspective. Examples of technology innovations that have changed and advanced drive systems of rotary wing vehicles will be provided. These innovations include full 6-axis CNC gear manufacture, face gear development to aerospace standards, health and usage monitoring, and gear geometry and bearing improvements. Also, an overview of current state-of-the-art activities being conducted at NASA Glenn is presented with a short look to fixed and rotary wing aircraft and systems needed for the future
Helicopter drive-system technology which would result in the largest benefit in direct maintenance c...
A joint research program, to advance the technology of rotorcraft transmissions, consists of analyti...
This report investigates the practical usage of hybrid structures for rotorcraft gearing. The primar...
Highlighted here is that portion of the Lewis Research Center's helicopter propulsion systems progra...
Since 1970 the NASA Lewis Research Center and the U.S. Army Aviation Systems Command have shared an ...
The NASA Lewis Research Center and the U.S. Army Aviation Systems Command share an interest in advan...
The state of development of the rotary combustion engine is discussed. The nonturbine engine researc...
This is an overview presentation of research being performed in the Advanced Materials Task within t...
The following basic types of gear reduction concepts were studied as being feasible power train syst...
Transmissions studied for application to helicopters in addition to the more conventional geared tra...
This paper presents an overview of the magnetic gearing research being conducted at NASA. First, the...
Design studies of advanced multifuel general aviation and commuter aircraft rotary stratified charge...
The use of face gears in an advanced rotorcraft transmission design was first proposed by the McDonn...
The general public may not know that the first A in NASA stands for Aeronautics. If they do know, th...
A brief overview and technical highlights of the research efforts and studies on rotary engines over...
Helicopter drive-system technology which would result in the largest benefit in direct maintenance c...
A joint research program, to advance the technology of rotorcraft transmissions, consists of analyti...
This report investigates the practical usage of hybrid structures for rotorcraft gearing. The primar...
Highlighted here is that portion of the Lewis Research Center's helicopter propulsion systems progra...
Since 1970 the NASA Lewis Research Center and the U.S. Army Aviation Systems Command have shared an ...
The NASA Lewis Research Center and the U.S. Army Aviation Systems Command share an interest in advan...
The state of development of the rotary combustion engine is discussed. The nonturbine engine researc...
This is an overview presentation of research being performed in the Advanced Materials Task within t...
The following basic types of gear reduction concepts were studied as being feasible power train syst...
Transmissions studied for application to helicopters in addition to the more conventional geared tra...
This paper presents an overview of the magnetic gearing research being conducted at NASA. First, the...
Design studies of advanced multifuel general aviation and commuter aircraft rotary stratified charge...
The use of face gears in an advanced rotorcraft transmission design was first proposed by the McDonn...
The general public may not know that the first A in NASA stands for Aeronautics. If they do know, th...
A brief overview and technical highlights of the research efforts and studies on rotary engines over...
Helicopter drive-system technology which would result in the largest benefit in direct maintenance c...
A joint research program, to advance the technology of rotorcraft transmissions, consists of analyti...
This report investigates the practical usage of hybrid structures for rotorcraft gearing. The primar...