June 1961 Popular Science
[Table of Contents]
Wax nostalgic about and learn from the history of early
electronics. See articles from
Popular
Science, published 1872-2021. All copyrights hereby acknowledged.
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Concepts for the
weaponization of space began long before the first satellites were launched in
the late 1950s. Science fiction writers dreamed of battles in outer space to
repel alien invaders, and war planners cogitated over such needs in warding off
enemy attacks back when long-range rockets were in the design and planning
stages. This "U.S. Plans First Warship in Space" from a 1961 issue of
Popular Science magazine reports on the state of the art. Some of the
countermeasures are comical, but were serious concepts being proposed at the
time. I particularly like the scheme where an anti-satellite "warship" would
essentially throw sand in the face of the offending craft in order to blind it's
video surveillance capabilities. Another option would was to hit its camera lens
with some spray paint. A robotic pair of bolt cutters might also snip off
antenna elements, and maybe as a next-to-last ditch resort, a giant reflector
could focus the sun's heat on the satellite and fry it to a crisp - like the old
magnifying glass on the ant trick. If all else fails, a nuke would be dispatched
to blow it to smithereens. Ah, the naiveté of youth.
U.S. Plans First Warship in Space
"Saint" Anti-Satellite inspects a satellite,
as in coming trials. In likely design pictured, retro-rocket and umbrella-like radar
antenna propel and guide Saint to within 100-foot range. As jets slowly rotate it,
TV lenses and other sensors, amidships, scan the satellite in turn.
"Saint" anti-satellite will tryout design for a rocket craft that would
intercept and knock out a foe's orbiting H-bombers
By Alden P. Armagnac
Military anti-satellite is in the making for the U. S. The Air Force reveals
it is developing a crewless rocket vehicle to intercept an unidentified earth satellite,
determine whether it is peaceful or hostile, and re-port the findings to our armed
forces.
Spurred by the newly demonstrated possibilities of satellites as weapons, the
high-priority $60,000,000, three-year defense program is called Project Saint, for
SAtellite INspection Technique. It represents this country's first active step to
prepare against warfare in space - whether cold war, or hot.
Four Saint anti-satellite spacecraft are being designed and built for Air Force
trial by the Radio Corporation of America. Each will be the final stage of a three-stage
rocket, with an Atlas booster and an Agena B second stage. From Cape Canaveral in
Florida, the satellite chasers will be launched at three-month intervals, in tests
unofficially expected to begin about December of next year.
Trial target for a Saint will probably be a 25·foot Echo-type balloon satellite,
or a modified, angled version called a reflector satellite, put into 400-mile-high
orbit just before firing the Saint.
For a kill, anti-satellites may wield weapons like these
Paint-Spraying Gun could blind a military photo
satellite by coating its lenses with opaque paint - a possible cold-war tactic.
Hurling Sand or shot in path of satellite would
simulate damage by meteor shower, and could serve for clandestine sabotage.
Solar Mirror would concentrate sun's rays to
"cook" a satellite, putting its heat-sensitive electronic gear out of commission.
Nuclear Warhead could vaporize an H-bomb satellite
at close range. At greater distance, it could disarm bomb by "neutron heating."
To intercept this 18,000-m.p.h. target, the anti-satellite will be rocketed into
a position just above and ahead of it. Then, braked by a retro-, or backward-firing,
rocket, the Saint will close in upon the target-and approach as gradually as by
10 m.p.h. to within 100 feet of it, for a good look.
The first four Saints will be unarmed. Their missions will be completed by inspecting
the satellites - how, the Air Force doesn't say, but presumably with TV cameras,
radar, infrared heat-detecting sensors, radiation detectors.
Later U. S. anti-satellites may be expected to be able to "kill" a dangerous
satellite - either by destroying it outright or by subtler ways of disarming it.
The Air Force reportedly is studying how to build this "destruct capability" into
Saint's successors.
Russia, too, is believed to have an anti-satellite program under way. By unconfirmed
but widely credited reports, it will be ready next year to "rendezvous" an interceptor
with a satellite - and will be able to put an unwanted satellite out of business
by 1963.
Here are the makings of combat fleets for space - of hostile actions and counter
- actions, ranging from sabotage to all-out war. What are the incentives for this
strange armament race?
Targets for Anti-Satellites
Saint will stand guard against
the newly recognized danger that H-bombs could be orbited in long-lived Russian
satellites-and then, by radio command at any moment, rained down upon the U.S. "For
such a bombing system," a recent official report warns Congress, "satellite launchings
could be conducted long in advance of a war, in a completely peaceful environment."
To drop a bomb, a satellite actually would launch a missile, which would use
a retro-rocket to detach itself from orbit and head for a target below. Any doubt
that this could be done was dispelled last August by the first successful U.S. recovery
of a Discoverer re-entry capsule - and by Russian recovery of a live-animal capsule.
Both were ejected from orbiting satellites, and directed to preselected areas on
earth. The Russians claim they brought theirs down only 6 1/4 miles from the intended
landing place; a sizable H-bomb as close could raze a target.
How Anti-Satellite Gets to Target
Rendezvous maneuver launches Saint into orbit above that of satellite target,
and it briefly becomes a satellite itself. At point ahead of target, it separates
from Agena second-stage rocket (which has turned over to aim it backward) and checks
its speed with retro-rocket. This makes it spiral down toward target. Homing controls
regulate rocket engine and auxiliary jets for gentle approach to viewing range.
Maneuver is simplest when Saint is launched into same plane as orbit of satellite-as
in diagram and first trials - but alternate, dog-leg courses are feasible, experts
say.
Preview of Saint's Launching is given by photo
of Atlas-Agena rocket combination, poised to put Samos satellite into orbit. Saint
will use same rockets, and scene will resemble this.
Russia and the U.S. are both known to have studied H-bomb satellites. The Pentagon,
so far, evidently prefers earth-based ICBMs. The Russians might decide differently.
That explains why it was disturbing news when, early last year, our radar "space
fence" picked up what looked like the first mystery orbiter. The "black" satellite
- which Russia hastened to disclaim - turned out to be only a Discoverer capsule
astray in space. But the possibility of orbiting weapon carriers will continue to
make any unidentified satellite an object of lively concern.
Space Blackmail?
Another possible satellite threat has been
suggested. For cold-war purposes, suppose Russia launched a fleet of mystery satellites,
and blandly announced they contained H-bombs. Whether they did or not, they could
be used for international blackmail - if the rest of the world had no way of telling.
New menace of bomb-launching satellites spurs Saint project
Satellite-Launched H-Bomb Missile, firing retro-rocket,
would drop from orbit to target on earth. Diagram of trajectory, above, is based
on official one in a recent report warning of possibility. Missile could be patterned
after successful design, shown in cutaway view, of re-entry vehicle used to bring
down our Discoverer space capsules from orbit for recovery.
First Object ever brought to earth from orbit
was Discoverer capsule. Photo at left shows it being lowered into heat shield that
protects it from high temperature and shock of passage through atmosphere. Then
parachute opens and lifts it free, for final approach to earth. Discoverer capsules
range up to 350-pound size. Aversion not much larger (600 pounds or more) could
hold an H-bomb.
Forerunner of U.S. anti-satellite was this 31-foot
Martin rocket missile. In pioneering 1959 test of anti-satellite guidance, it was
launched from Air Force B-47 plane at 35,000-foot altitude off Cape Canaveral, Fla.,
and streaked to within about four miles of Explorer VI paddlewheel satellite in
160-mile-high orbit. Nose windows (in photo, covered before launching) were apparently
part of a secret homing system.
Manned anti-satellites could use these designs - and tactics
Piloted Space Warships could look like manned
civilian spacecraft for rendezvous missions. Examples: joint Lockheed-Hughes design
(top view), General Electric design (lower view).
Spider and Fly: With mechanical arms controlled
by pilot, anti-satellite could snip off a satellite's antennas to sever its radio
control from the earth, and thus make it inoperative. "
Sunk Without Trace: Towed backward to check
speed and then cast loose, satellite would fall from orbit, bum up in air. Idea
was first proposed to rid space of derelict satellites.
So a Saint will frisk a suspicious satellite for a nuclear bomb - possibly with
a radiation detector, or perhaps with a nudge from its rocket exhaust, to see how
far and fast the satellite bounces. That will tell if it is heavy enough to contain
a bomb. Presumably Saint's armed successors would destroy or disarm an object as
dangerous as an H-bomb satellite.
For a Soviet anti-satellite, obvious hot-war targets would be our military satellites
- for communications, navigation, ICBM warning, reconnaissance. Might they also
offer tempting targets for cold-war depredations?
Last January the U.S. Air Force launched the first of our Samos photo-reconnaissance
satellites - which, when fully developed, should be able to take revealing pictures
of Russian military installations. While the USSR has made no formal protest, its
press is muttering that it will have ways of dealing with these satellites. Should
a Samos suddenly and mysteriously go blind, it might be our first notice that Russian
anti-satellites were operational.
Perhaps significantly, Samos has one of the first rocket engines that can be
stopped and restarted in space - and so could try the first countermeasure against
an anti-satellite. By restarting its engine and propelling itself into a new orbit,
it could take evasive action to escape interception.
Satellite Killers
Anti-satellite weapons for a kill are likely
to be decidedly unconventional ones, chosen to suit the target. Despite official
silence on the subject, they can be quite reasonably predicted:
- As unmilitary a weapon as a paint-spraying gun could be used to disable
a photo satellite, by coating its lenses with opaque paint.
- A large solar mirror would serve as a burning glass to "cook" the heat-sensitive
electronic gear of a satellite, and put it out of commission.
- Hurling sand, gravel, or metal shot toward an oncoming satellite could pit
its solar cells and optical equipment, or even riddle it through and through. For
dark doings in space, this would have the special advantage of simulating a natural
meteor shower. A country whose satellite was the victim could never be sure whether
there had been a clandestine attack upon its orbiter in space, or not.
More-violent weapons, or those that would leave telltale wreckage, might be avoided
as too provocative for cold-war use. To cope with anything as warlike as an H-bomb
satellite, however, a country would probably pull no punches.
Samos Photo Satellite (being made ready above)
has inspired veiled threats in Russian press - and might offer tempting target for
Red anti-satellites, believed under development.
A nuclear warhead will be likely to arm an anti-satellite for that mission. Its
explosion will be blastless in space - but its heat and radiation will be all the
more potent, for lack of air to absorb them. At 100 yards, an aluminum satellite
shell of 0.15-inch thickness would be vaporized by a small one-kiloton A-bomb. The
flood of neutrons from the same explosion would disable an enemy nuclear bomb at
more than quarter-mile distance, calculates Prof. S. Fred Singer, University of
Maryland physicist. Because these nuclear particles would release additional neutrons
within the bomb, they should overheat it enough to damage its mechanism and make
it inoperative.
Even a ray gun is not too fanciful to be considered. Recently the Air Force awarded
a contract to the General Electric plant at Santa Barbara, Calif., to study the
feasibility of "ion-beam projectors" as weapons.
For lack of blast, common high-explosive shells will be useless in space. Among
conventional weapons, the few effective ones include machine-gun bullets and shrapnel
or fragmentation shells.
Guided accurately enough, even an unarmed Saint could destroy a hostile satellite
by borrowing one of the earliest naval tactics - and simply ramming it.
Start Already Made
Designers of Saint will build upon well-known
principles, and a pioneering experiment.
The rendezvous maneuver Saint will use has been widely studied, because of its
many applications in future civilian space missions: to assemble space stations
in orbit, to dock spaceships at them, to go to the rescue of a rocket ship in distress.
Suitable trajectories, starting either from earth or a "parking orbit" above it,
have been worked out by space scientists in great detail. Already on the drawing
boards are designs for civilian spacecraft, both unmanned and manned, to ply these
courses.
From paper studies, experimenters have progressed to actual hardware. A forerunner
of Saint was a 31-foot, air-launched Martin missile, dubbed Bold Orion by its maker.
In a 1959 trial of anti-satellite guidance, this two-stage rocket hurtled to within
about four miles of our orbiting Explorer VI paddlewheel satellite.
Convinced by last fall that an anti-satellite was feasible and needed, the Air
Force outlined its requirements to 27 leading U.S. makers of spacecraft, and invited
proposals. In December it adopted a still-secret design submitted by RCA for the
four trial Saints, which are reputed to be of about one-ton size. (Later ones may
be twice as large.)
The Future
Although early Saints will probably be limited to
viewing a target satellite at a single pass, future models may permit repeated passes.
An armed anti-satellite could first inspect an unidentified satellite - then, in
response to a radio command, return for a kill.
Ultimately the future will bring manned military spacecraft - and space - war
possibilities more fantastic than any in fiction. Encounters of killer anti-satellites
on opposing missions, or of space destroyers with a manned military satellite, space
station, or lunar base, may trigger anything from skirmishes to full-scale battles
above the earth.
While space remains as lawless a frontier as our Wild West of other days, the
U.S. has no choice but to prepare against space war. At the same time, it is actively
seeking an international agreement - similar to one successfully negotiated for
Antarctica - that would ban all military activities from space.
Thus, depending on the course of coming events, our Saint anti-satellites could
be the prototypes for battle fleets in the wild black yonder - or for international
space-police cruisers, enforcing the law and guarding the peace in regions beyond
the earth.
Posted May 8, 2024
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