Altitude transitions in energy climbsThe aircraft energy-climb trajectory for configurations with a sharp transonic drag rise is well known to possess two branches in the altitude/Mach-number plane. Transition in altitude between the two branches occurs instantaneously, a 'corner' in the minimum-time solution obtained with the energy-state model. If the initial and final values of altitude do not lie on the energy-climb trajectory, then additional jumps (crude approximations to dives and zooms) are required at the initial and terminal points. With a singular-perturbation approach, a 'boundary-layer' correction is obtained for each altitude jump, the transonic jump being a so-called 'internal' boundary layer, different in character from the initial and terminal layers. The determination of this internal boundary layer is examined and some computational results for an example presented.
Document ID
19830045386
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Weston, A. R. (Virginia Polytechnic Inst. and State Univ. Blacksburg, VA, United States)
Cliff, E. M. (Virginia Polytechnic Inst. and State Univ. Blacksburg, VA, United States)
Kelley, H. J. (Virginia Polytechnic Institute and State University Blacksburg, VA, United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1982
Subject Category
Aircraft Stability And Control
Meeting Information
Meeting: Control science and technology for the progress of society; Eighth Triennial World Congress