Documents / Official release

Gemini 4 Experiment Debriefing, 1967

National Aeronautics and Space Administration · 1965 · 224 pages · text from the file's own layer

This NASA file from 1965 combines Mission Operation Report M-913-65-04 on the Gemini 4 (GT-4) flight with related correspondence. Memoranda from the Associate Administrator for Manned Space Flight describe the planned four-day mission with James McDivitt and Edward White, including a spacewalk, a rendezvous with the booster second stage and thirteen experiments. Later letters and telegrams from NASA's Manned Space Science office concern the astronaut debriefing and requests for GT-4 photography and film for scientific analysis.

From the source: Release of 2026-06-12 Incident: June 3-7, 1965, Low Earth Orbit. Gemini IV was the second crewed mission of the Gemini series. Astronauts James McDivitt and Edward White successfully completed the four-day flight between June 3 and June 7, 1965. The mission included the first American spacewalk. This collection of documents contains a transcription of the astronauts recounting their observations of bright particles outside the spacecraft, dated circa June 25, 1967, on pages 78-81, and page 101.

Rtndczvous guidance
& recovery system ____ _,
11 Ft
8 Ft
Separation point
Oxidizer tank
•Equipment bay
27 Ft
Stage 11 engine
thrust chamber
108 Ft
10 Ft
Oxidizer
tank
Stage I engine
g1mbal point
•Equipment bay contains:
• Batteries·
• Malfunction detection system IMOSI units
• Range safety command control system
• Programmer
• Three-axis reference system !TARSI
• Radio guidance system IRGSI
• Autopilot
• Instru mentation and telemetry system
FIG.
5/24/65
M-913-65-04
GENERAL
Gemini Flight Number Four (GT-4) is the second
manned orbital flight in the Gemini Program and
the fourth flight in a series of twelve planned to
develop long-duration and rendezvous capability,
docking techniques, extra-vehicular activities,
and controlled reentry. The first three Gemini
flights demonstrated: orbital insertion capability;
spacecraft structural integrity; and spacecraft
systems performance and crew accommodation
qualities, respectively. This GT-4 mission is
intended to further demonstrate manned space
flight for a period of four days, the longest
ever flown by two astronauts. The space vehicle
is depicted in Figure 1.
MISSION OBJECTIVES
PRIMARY
• Demonstrate and evaluate the performance of
the Gemini spacecraft systems for a period
exceeding four days.
• Evaluate the effects of prolonged exposure
to the space environment on the two-man
flight crew in preparation for missions of
longer duration.
SECONDARY
• Demonstrate OAMS capability to perform retro fire
backup.
• Demonstrate the capability of the spacecraft and
flight crew to make significant in-plane and
out-of-plane maneuvers.
• Conduct further evaluation of spacecraft
systems as outlined below:
1 . Structure and thermo I protection
2. Environmental Control Systems (ECS)
3. Crew stations
4. Guidance and Control System
5. Orbital Attitude and Maneuver System
(OAMS)
• Execute the fol Iowing experiments:
• D-1, Basic Object Photography
• D-6, Surface Photography
• D-8, Radiation in Spacecraft
• D-9, Simple Navigation
• M-3, In-Flight Exercises
• M-4, In-Flight Phonocardiogram
• M-6, Bone Demineralization
• MSC-1, Electrostatic Charge
Page 1

Cases discussed

About this file

Official release, from the pursue collection. The PDF is mirrored here; the original link is above. 224 pages are in the text index: search them above, or from the library's search.