Accession Number:

ADA243025

Title:

Flight Evaluation of Curved MLS Precision Approaches in a Twin Otter Aircraft. Phase 2

Descriptive Note:

Aeronautical note,

Corporate Author:

NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) INST FOR AEROSPACE RESEARCH

Personal Author(s):

Report Date:

1991-07-01

Pagination or Media Count:

26.0

Abstract:

Phase II flight testing of curved, segmented approaches using a Microwave Landing System MLS was conducted on a Twin Otter aircraft belonging to the Canadian National Research Councils Institute for Aerospace Research IAR. Precision guidance algorithms were developed for approaches with track angle changes exceeding 180 deg. Software development flights focussed on validating these algorithms and enhancing the existing electromechanical flight director to ease the pilot workload in tracking the curved segments. A limited number of pilot evaluations confirmed that with an enhanced lateral flight director, these approaches could be flown satisfactorily regardless of the magnitude of the track angle changes. Observations were made on approach design and wind effects on curved segment tracking.

Subject Categories:

  • Military Aircraft Operations
  • VSTOL
  • Air Navigation and Guidance

Distribution Statement:

APPROVED FOR PUBLIC RELEASE