The design of a turboshaft speed governor using modern control techniques [PDF]
The objectives of this program were: to verify the model of off schedule compressor variable geometry in the T700 turboshaft engine nonlinear model; to evaluate the use of the pseudo-random binary noise (PRBN) technique for obtaining engine frequency ...
Delosreyes, G., Gouchoe, D. R.
core +1 more source
Energy Harvesting Technologies for Structural Health Monitoring of Airplane Components-A Review. [PDF]
Sensors (Basel), 2020 Zelenika S +21 more
europepmc +1 more source
Advanced General Aviation Turbine Engine (GATE) concepts [PDF]
Concepts are discussed that project turbine engine cost savings through use of geometrically constrained components designed for low rotational speeds and low stress to permit manufacturing economies.
Lays, E. J., Murray, G. L.
core +1 more source
Onboard Neuro-Fuzzy Adaptive Helicopter Turboshaft Engine Automatic Control System
EnergiesA modified onboard neuro-fuzzy adaptive (NFA) helicopter turboshaft engine (HTE) automatic control system (ACS) is proposed, which is based on a circuit consisting of a research object, a regulator, an emulator, a compensator, and an observer unit. In this scheme, it is proposed to use the proposed AFNN six-layer hybrid neuro-fuzzy network (NFN) with ...
Serhii Vladov +3 more
openaire +2 more sources
Automated Power Assessment for Helicopter Turboshaft Engines [PDF]
An accurate indication of available power is required for helicopter mission planning purposes. Available power is currently estimated on U.S. Army Blackhawk helicopters by performing a Maximum Power Check (MPC), a manual procedure performed by ...
Litt, Jonathan S., Simon, Donald L.
core +1 more source
Observations from Exploration of VTOL Urban Air Mobility Designs [PDF]
NASA is exploring rotorcraft designs for VTOL air taxi operations, also known as urban air mobility (UAM) or on-demand mobility (ODM) applications. Several concept vehicles have been developed, intended to focus and guide NASA research activities in ...
Johnson, Wayne, Silva, Christopher
core +1 more source
Helicopter Turboshaft Engine Emission Estimation Based on Standard Flight Profile [PDF]
Challenges to national defence in contemporary geopolitical situation, 2020 József TÓTH +2 more
openaire +1 more source
A review of NASA's propulsion programs for aviation [PDF]
A review of five NASA engine-oriented propulsion programs of major importance to civil aviation are presented and discussed. Included are programs directed at exploring propulsion system concepts for (1) energy conservation subsonic aircraft (improved ...
Johnson, H. W. +2 more
core +1 more source
NDARC-NASA Design and Analysis of Rotorcraft Theoretical Basis and Architecture [PDF]
, 2010 The theoretical basis and architecture of the conceptual design tool NDARC (NASA Design and Analysis of Rotorcraft) are described. The principal tasks of NDARC are to design (or size) a rotorcraft to satisfy specified design conditions and missions, and ...
Johnson, Wayne
core +1 more source
Maintenance and inspection as risk factors in helicopter accidents: Analysis and recommendations. [PDF]
PLoS One, 2019 Saleh JH +3 more
europepmc +1 more source