Here are some of the documents used in Pastor Dean's message “Government Documents Admit Flat Earth:”
Russia 1948
Shape of the earth unknown..
https://www.cia.gov/library/readingroom/docs/CIA-RDP80-00809A000600231031-1.pdf
Russian Light Study
“Brightness of the firmament”
Flat earth :
https://www.cia.gov/library/readingroom/docs/CIA-RDP86-00513R001343720008-3.pdf
Government Definition of Geoid
https://www.ngs.noaa.gov/GEOID/geoid_def.html
Propagation of Electromagnetic Fields Over Flat Earth
http://www.arl.army.mil/arlreports/2001/ARL-TR-2352.pdf
page 9: based upon the signal having a single bounce on a flat Earth
http://www.arl.army.mil/arlreports/2009/ARL-TR-4998.pdf
page 1:
Trajectory of Spinning Projectiles:
“These equations assume a flat Earth.”
http://www.arl.army.mil/arlreports/2010/ARL-TR-5118.pdf
page 2:
“These equations assume a flat Earth..”
http://www.arl.army.mil/arlreports/2011/ARL-TR-5810.pdf
page 216:
"assuming a flat Earth"
http://tycho.usno.navy.mil/ptti/2007papers/paper21.pdf
Page 1:
“...so that a flat-earth approximation provides the best estimate.”
http://www.arl.army.mil/arlreports/2001/ARL-TN-175.pdf
Page 39:
model works over a flat earth
http://www.arl.army.mil/arlreports/2003/ARL-TR-2696.pdf
page 1:
transmission loss over flat earth
http://www.arl.army.mil/arlreports/2000/ARL-TR-2156.pdf
page 9:
“...input to a flat earth”
http://www.arl.army.mil/arlreports/2003/ARL-MR-563.pdf
page 3:
“The first is the Earth-fixed coordinate system, which is fixed to the Earth with a flat Earth assumption.”
http://www.arl.army.mil/arlreports/2010/ARL-CR-650.pdf
page: 1
flat earth approximation provides the best estimate
http://www.arl.army.mil/arlreports/2002/ARL-TR-2683.pdf
page 32:
This model works well over a flat-earth
http://www.arl.army.mil/arlreports/2000/ARL-TR-1812.pdf
page 168:
equations of flat-earth trigonometry.
http://www.irig106.org/docs/106-17/106-17_Telemetry_Standards.pdf
page 8:
The Earth is flat and nonrotating.
http://www.navair.navy.mil/nawcwd/command/Inplace.aspx/LoadFile/531
General Equations of Motion for Damaged Asymmetric Aircraft
Page 1: “...equations of motions must properly reflect the underlying physics.”
page 2:
"In this paper, the rigid body equations of motion over a flat
non-rotating earth are developed...”
https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20070030307.pdf
Approximate Optimal Guidance for the Advanced Launch System
On page one this document does mention a spherical rotating earth but then states that “...these schemes” (based on a spherical rotating earth) 1) “...are difficult to prove” and 2) “...not suggested to be used as a basis for an online real-time guidance law.”
Page 32 goes on to say:
"Lastly, the equations of motion for the zeroth-order problem of flight in a vacuum over a flat Earth are presented."
https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19940020279.pdf
SR-71
Page 8 “...nonrotating Earth...”
https://www.nasa.gov/centers/dryden/pdf/88507main_H-2179.pdf
page 14:
(2) A flat, nonrotating earth
https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19710018599.pdf
page 8:
the missile position in space is computed relative to a flat nonrotating earth.
https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20040008097.pdf
page 108:
aircraft flying over flat, nonrotating earth
page:12
"aircraft flying in a stationary atmosphere over flat nonrotating earth"
https://www.nasa.gov/centers/dryden/pdf/88072main_H-1259.pdf
NASA Technical Paper 2835
September 1988
Page 1 Summary:
Flat nonrotating earth
Last page 126:
"The nonlinear equations of motion used are six-degree-of-freedom equations
with a stationary atmosphere and flat, nonrotating earth"
https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19890007066.pdf
Determination of Angles of Attack and Sideslip from Radar Data and a Roll Stabilized Platform
NASA
March 1972
page 2:
"The method is limited, however, to application where a flat, nonrotating earth"
https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19720012071.pdf
An Aircraft Model for the AIAA Controls Design Challenge
NASA
1991
page 11:
"The nonlinear equations of motion used in this model are general six-degree-of-freedom equations representing the flight dynamics of a rigid aircraft flying in a stationary atmosphere over a flat, nonrotating earth"
https://www.nasa.gov/centers/dryden/pdf/88248main_H-1777.pdf
Investigation of Aircraft Landing in Variable Wind Fields
NASA 1973
page14 pdf or 6 on actual report:
a) The earth is flat and non-rotating.
https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19790005472.pdf
A Mathematical Model of the CH-53 Helicopter
NASA
page 17:
“The helicopter equations of motion are given in body axes with rerpect to
a flat, nonrotating Earth.”
https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19810003557.pdf
Atmospheric Oscillations
Georgia Tech April 1965
Prepared for NASA
page 13:
A model frequently used is that of a flat, nonrotating earth.
https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19650015408.pdf
Stability and Control Estimation Flight Test Results for the SR-71 Aircraft With Externally Mounted Experiments
NASA
June 2002
page 18-19:
“These equations assume a rigid vehicle and a flat, nonrotating Earth.”
https://www.nasa.gov/centers/dryden/pdf/88733main_H-2465.pdf
Flight Testing a VSTOL Aircraft
NASA 1988
page 9 pdf or 4-5 on actual doc:
“For aircraft problems, the state and measurement models together represent the kinematics of a rigid body for describing motion over a flat, nonrotating Earth...”
https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19880014378.pdf
Time to Climb
page2:
“In our minimum time-to-climb problem, the aircraft is modeled as a point mass and the flight trajectory is strictly
confined in a vertical plane on a non-rotating, flat earth.
https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20060053337.pdf