missing Luminary099 files retrieved from virtualagc at https://github.com/rburkey2005/virtualagc/tree/master/Luminary099
This commit is contained in:
76
Luminary099/GIMBAL_LOCK_AVOIDANCE.agc
Normal file
76
Luminary099/GIMBAL_LOCK_AVOIDANCE.agc
Normal file
@ -0,0 +1,76 @@
|
||||
# Copyright: Public domain.
|
||||
# Filename: GIMBAL_LOCK_AVOIDANCE.agc
|
||||
# Purpose: Part of the source code for Luminary 1A build 099.
|
||||
# It is part of the source code for the Lunar Module's (LM)
|
||||
# Apollo Guidance Computer (AGC), for Apollo 11.
|
||||
# Assembler: yaYUL
|
||||
# Contact: Ron Burkey <info@sandroid.org>.
|
||||
# Website: www.ibiblio.org/apollo.
|
||||
# Pages: 364
|
||||
# Mod history: 2009-05-17 RSB Adapted from the corresponding
|
||||
# Luminary131 file, using page
|
||||
# images from Luminary 1A.
|
||||
# 2010-12-31 JL Fixed page number comment.
|
||||
#
|
||||
# This source code has been transcribed or otherwise adapted from
|
||||
# digitized images of a hardcopy from the MIT Museum. The digitization
|
||||
# was performed by Paul Fjeld, and arranged for by Deborah Douglas of
|
||||
# the Museum. Many thanks to both. The images (with suitable reduction
|
||||
# in storage size and consequent reduction in image quality as well) are
|
||||
# available online at www.ibiblio.org/apollo. If for some reason you
|
||||
# find that the images are illegible, contact me at info@sandroid.org
|
||||
# about getting access to the (much) higher-quality images which Paul
|
||||
# actually created.
|
||||
#
|
||||
# Notations on the hardcopy document read, in part:
|
||||
#
|
||||
# Assemble revision 001 of AGC program LMY99 by NASA 2021112-61
|
||||
# 16:27 JULY 14, 1969
|
||||
|
||||
# Page 364
|
||||
BANK 15
|
||||
|
||||
SETLOC KALCMON1
|
||||
BANK
|
||||
|
||||
# DETECTING GIMBAL LOCK
|
||||
LOCSKIRT EQUALS NOGIMLOC
|
||||
|
||||
NOGIMLOC SET
|
||||
CALCMAN3
|
||||
WCALC LXC,1 DLOAD*
|
||||
RATEINDX # CHOOSE THE DESIRED MANEUVER RATE
|
||||
ARATE,1 # FROM A LIST OF FOUR
|
||||
SR4 CALL # COMPUTE THE INCREMENTAL ROTATION MATRIX
|
||||
DELCOMP # DEL CORRESPONDING TO A 1 SEC ROTATION
|
||||
# ABOUT COF
|
||||
DLOAD* VXSC
|
||||
ARATE,1
|
||||
COF
|
||||
STODL BRATE # COMPONENT MANEUVER RATES 45 DEG/SEC
|
||||
AM
|
||||
DMP DDV*
|
||||
ANGLTIME
|
||||
ARATE,1
|
||||
SR
|
||||
5
|
||||
STORE TM # MANEUVER EXECUTION TIME SCALED AS T2
|
||||
SETGO
|
||||
CALCMAN2 # D(OFF) = CONTINUE MANEUVER
|
||||
NEWANGL +1 # 1(ON) = START MANEUVER
|
||||
|
||||
# THE FOUR SELECTABLE FREE FALL MANEUVER RATES SELECTED BY
|
||||
# LOADING RATEINDX WITH 0, 2, 4, 6, RESPECTIVELY
|
||||
|
||||
ARATE 2DEC .0088888888 # = 0.2 DEG/SEC $ 22.5 DEG/SEC
|
||||
|
||||
2DEC .0222222222 # = 0.5 DEG/SEC $ 22.5 DEG/SEC
|
||||
|
||||
2DEC .0888888888 # = 2.0 DEG/SEC $ 22.5 DEG/SEC
|
||||
|
||||
2DEC .4444444444 # = 10.0 DEG/SEC $ 22.5 DEG/SEC
|
||||
|
||||
ANGLTIME 2DEC .0001907349 # = 100B-19 FUDGE FACTOR TO CONVERT
|
||||
# MANEUVER ANGLE TO MANEUVER TIME
|
||||
|
||||
|
Reference in New Issue
Block a user