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Flight investigation of manual and automatic VTOL decelerating instrument approaches and landingsA flight investigation was undertaken to study the problems associated with manual and automatic control of steep, decelerating instrument approaches and landings under simulated instrument conditions. The study was conducted with a research helicopter equipped with a three-cue flight-director indicator. The scope of the investigation included variations in the flight-director control laws, glide-path angle, deceleration profile, and control response characteristics. Investigation of the automatic-control problem resulted in the first automated approach and landing to a predetermined spot ever accomplished with a helicopter. Although well-controlled approaches and landings could be performed manually with the flight-director concept, pilot comments indicated the need for a better display which would more effectively integrate command and situation information.
Document ID
19740019989
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Technical Note (TN)
Authors
Kelly, J. R. (NASA Langley Research Center Hampton, VA, United States)
Niessen, F. R. (NASA Langley Research Center Hampton, VA, United States)
Thibodeaux, J. J. (NASA Langley Research Center Hampton, VA, United States)
Yenni, K. R. (NASA Langley Research Center Hampton, VA, United States)
Garren, J. F., Jr. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 3, 2013
Publication Date
July 1, 1974
Subject Category
Navigation
Report/Patent Number
NASA-TN-D-7524
L-9311
Accession Number
74N28102
Funding Number(s)
PROJECT: RTOP 760-63-04-01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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