Manning their SR71 Blackbird at 2330 local time

sr71 blackbird underwing and nose to nose
sr71 blackbird underwing and nose to nose

Manning their SR71 Blackbird at 2330 local time

amid the din from the un-rnuttted twin Buick
V·8 engines used to provide starting power for the Blackbird's J·58s, Major James V.
Sullivan, pilot, and Major Noel F. Widdifield, RSO, began a five hour and forty five minute
flight that would amaze the world.
Lifting off from Beale two minutes into September 1, SR·71A Serial number 17972
climbed into the refuelling track 26,000 feet above Nevada. After taking on a full load from
the KC·135Q, The Blackbird climbed and accelerated to Mach 3 as it crossed the United
States. One more refuelling was required, and it took place off the coast of the Carolinas.
With this rendezvous complete, Sullivan advanced the throttles and once more headed
upward into Mach 3 country, passing through the timing gate east of New York on speed,
and on course.
Exactly 1 hour, fifty five minutes, and forty two seconds later the SR·71 passed through
the timing gate in rnld-Channel, off Southhampton, completing the run in less than a
seventeenth of the time it had taken Charles Lindbergh some forty seven years earlier.
Sadly, Lindbergh had died less than a week before and so did not see yet another tribute
to his pioneering spirit.

After remaining on static display for a week at the Farnborough International Air Show,
the SR·71 was flown to Mildenhall to be prepared for the return flight to Beale. A record
was established on this flight. (No previous record existed.) Captain Harold B. Adams,
pilot, and Major William C. Machurek, RSO took off from Mildenhall, climbed to refuelling
rendezvous, and after taking on fuel, climbed and accelerated as they crossed the Atlan-
tic. A second refuelling was required over Goose Bay, Labrador before the final Mach 3
dash across Canada and into the United States. Oecelldescent was planned for a point
200 miles northeast of Los Angeles, which would have gotten the Blackbird subsonic 40
miles short of all that glass and those sensitive eardrums. An engine compressor stall
during this phase of the flight caused the Blackbird to boom the suburbs of LA, which
resulted in some damage claims. When the Blackbird passed through the LA timing gate,
it had covered a distance of 5,645 miles in 3 hours, 47 minutes for an average speed of
1,435 MPH. Nearly an hour and fifteen minutes of that time had been spent at subsonic
speed.
More records were set in 1976. On July 27 and 28 operational crews and aircraft from
Beale virtually wiped everyone else's name from the record books. The three crews who
set the records were Majors Adolphus H. Bledsoe, Jr., pilot and John T. Fuller, RSO, Cap-
tain Robert C. Helt, pilot, and Major Larry A. Elliott, RSO, and Captain Eldon W. Joersz,
pilot, and Major George T. Morgan, RSO. All flights were from Beale, and the records were
certified by the FAI with equipment at Edwards AFB, where the record portion of the
flights took place.
The 9th SRW had been functioning as a single squadron wing (the 1 st SRS) for several
years, when further budgetary considerations forced a merger with the 100th SRW in
1976. The 100th had been operating U·2s and Ryan AQM·34 RPVs, supported by DC·130s
and CH·3s at Davis Monthan AFB. Transfer of the RPVs to TAC left the 100th as another
single squadron wing, and prompted SAC to merge them into a single wing. The U·2s rnov-
ed to Beale, and the 99th SRS was reactivated. The 100th wing also moved to Beale, but
became the 100th Aerial Refuelling Wing, with two squadrons of KC·135Qs, which sup-
port the SR·71 world·wide. While the personnel of the 100th transferred into the 99th SRS,
the personnel for the 100th were drawn from the 17th Bombardment Wing, which had lost
it's B·52's to other units earlier in the year. The 9th SRW was put in the unique position of
operating the fastest and slowest of Strategic Reconnaissance aircraft. Though there is
the natural rivalry and verbal jousting between SR·71 and U·2 squadrons, there has been
no other tall-out from this unusual situation.
The SR·71 has continued to make headlines. In 1979 President Carter sent it into action
over Cuba to monitor the "unacceptable" Russian combat brigade. Time Magazine
reported in October, 1979 that the Blackbirds had also flown over Cuba in 1978 to in-
vestigate the presence of MiG·23s. Time also credited the SR·71 with the ability to "efface
it's image from watching radar screens." Also according to Time, Russian missiles had at·
tempted to shoot down the Blackbirds in several other parts of the world, including
Eastern Europe, the Middle East, and North Korea .... all without success.
In the fall of 1981 a Kadena-based SR·71 was fired at by a North Korean SAM battery as
it flew off the coast of North Korea. Newsweek called it "a spitball probe of U.S. resolve."
Though the SAM didn't come close to hitting the SR·71, U.S. reaction was quick and tough
sounding. U.S. representatives called for a meeting of the Military Armistice Commission,
which oversees relations between North and South Korea, and State Department
Spokesman Dean Fischer asserted that the North Korean action violated accepted norms
of international behavior. He further stated that the United States would take whatever
steps were necessary to ensure the safety of our pilots and planes. Presumably, that
would include destruction of any threatening SAM sites.
The complete history of Blackbird operation will not be written for years to come. When
it is, it will read like a geographical who's who - a tour of every corner of the earth, en-
countering situations and making discoveries that will have changed the course of
history. The pilots who flew the airplane will have stories to tell that will be halr-ralstnq, at
least, and those who made the ultimate sacrifice can be honored publicly. Until that day
comes, we can only speculate on what the SR·71 has done, where It has gone, and how It's
missions have affected history. Chances are, none of the speculation will come close to
the truth.

SR71 Blackbird Blended Forward wing (chine)


SR71 Blackbird Blended Forward wing (chine) 

SR71 Blackbird Blended Forward wing (chine)
SR71 Blackbird Blended Forward wing (chine) 

Between the time the Blackbirds were publically announced in February, 1964 and their
debut in September of the same year, they acquired the overall Blackpaint scheme which
would ultimately cause them to be christened "Blackbird". (I have heard the assertion that
they are actually dark Blue, but like everything else about the Blackbird, the actual
specification is secret, and they certainly look Blacker than Black in person!) (USAF)

ty is less than 2% of sea level, necessitating larger control movements. Sitting fifty feet in
front of the center of gravity, the pilot will be the last one to know if his inputs are correct.
High performance is dependent upon an artificial Stability Augmentation System (SAS)
which relieves the pilot of the constant pressure of balancing a 2,000 MPH see-saw, The
Honeywell·designed SAS has proven to be one of the most reliable of the Blackbird's sub­
systems, recording a 130,000 hour MTBF rate!

Honeywell also developed the Air Data Computer. The Air Data Computer compensates
for the effects of high Mach number and gives accurate readings of altitude, vertical
speed, and Mach number on it's triple-display digital indicator. (Because of the low air
density at the Blackbird's operating altitude, the standard pressure instruments are
unreliable.)

With skin temperatures ranging from 450 to over 1200 degrees Fahrenheit at cruise
speeds, and the entire airframe soaking in these temperatures for extended periods of
time, it was necessary to develop new fuels, hydraulic fluids, oil, sealants, insulating
materials, and a whole host of related items. These temperatures immediately eliminated
most coventional airframe fabricating materials and techniques. They also eliminated all
but the toughest of titanium alloys. Over 93% of the basic structure of the Blackbird is
titanium. At Mach 3 the skin reaches maximum temperature within 11 minutes, while the
balance of the aircraft may take up to 35 minutes to reach steady state temps. Cooling is
accomplished through radiation, which is the reason that Blackbirds are Black. The high
emmisivity paint applied to Blackbirds radiates heat at almost three times the rate of
natural metal. The JP-7 fuel provides a measure of cooling, though as the fuel load is burn-

SR71 Blackbird YF-12A number 06935 blasted off the runway at Edwards on December 11,1969

sr71 blackbird two seat version
sr71 blackbird two seat version

SR71 Blackbird YF-12A number 06935 blasted off the runway at Edwards on December 11,1969

, on the
first phase of it's born-again test proqrarn. The initial phase of this program was under the
aegis of the Air Force, and included test objectives aimed at answering some questions
about implementation of the 8-1, which was as sure a thing as the SST, they thought. On
this first flight, the YF-12 climbed to 75,000 feet, accelerated out to Mach 3, then suc-
cessfully intercepted a 8-57 which was flying at 30,000 feet and Mach 0.5, effectively veri-
fying the status of the radar. Air Force objectives for it's portion of the tests included ex-
ploration of it's use in a tactical environment, how AWACS would control supersonic air-
craft, and how YF-12 programs could be adapted to the 8-1 development program.
The NASA tests would answer questions such as how engine inlet performance af-
fected airframe and propulsion interaction, boundary layer noise, heat transfer under high
mach conditions, and altitude hold at supersonic speeds would also be investigated. The
NASA budget for the 21/2 year program was $14 million, of which $4 million came from ex-
cess funds from the X-15 and X8-70 programs. The Air Force portion of the program was
budgeted at $4 million.
The U.S. Advanced Supersonic Technology Program, conducted by NASA's Flight
Research Center at Edwards AF8 also used the SR-71 prototype, 06937, in tests that
lasted far longer than the originally intended 21/2 year program. The two Blackbirds
averaged 6 months per year of ground time, during which instrumentation packages were
developed or removed and analyzed. While on flight status, the two aircraft averaged one
fligh.t per week, usually generating enough new data to require several days of analyzation
and Instrument recalibration. One of the first discoveries made was that, unlike the triple-
sonic airflow generated in wind tunnels, the Mach 3 airflow over the airframe surfaces in
flight was smooth. Data gathered in early test flights enabled aerodynamicists to design
high mach number wind tunnels that were free of the normal disturbances.
The altitude-hold problem concerned not only the YF-12/SR-71 aircraft. It had also been
encountered by the Anglo-French Concorde SST, and would be a major problem for the
U:S. SST. Altitude excursions of up to ± 3,000 feet were encountered at high altitude and
high mach numbers. Temperature variations, which were totally unpredictable, were
thought to be the cause of these oscillations, and a computer that would connect
autopilot to engine and inlet controls was the proposed solution.
Whil.e the USAF and NASA test programs proceeded, and were high-profile Blackbird
operations, the 9th SRW was flying operational SR-71 recon missions world-wide. All of
the world's hot spots came under Blackbird surveillance. Vietnam, the Middle East, Cuba
all. were photogr~phed on a regul~r basis b.y SR-71 s flying from bases in England,
Okl.n~,:",a, and Thailand. Most of the time, the Air Force managed to keep a tight lid on the
a~tlvltle~ of the SR-71 force. Occasionally, the lid was lifted just high enough to afford a
glimpse Into the nether world of Electronic Intelligence (ELI NT) missions.
As President Nixon was preparing to shock the world with his opening to China in 1971,
the 9th SRW was completing a detailed mapping of the Chinese mainland. This had involv-
ed literally hundreds of overflights (500 official protests had been made by the Peking
Government), and years of effort. As a quid pro quo for his trip to China, President Nixon
reportedly promised to stop the SR-71 overflights. Aviation Week reported in November,
1971 that unmanned reconnaissance flights were continuing over the Chinese mainland.
A 1972 R.amparts Magazine article quoted a former Air Force sergeant, who had worked
for the National Security Agency, as saying that there was virtually no way that the SR-71
c.ould.be br.ought d0:-vn. He mentioned specific instances of attempted Chinese intercep-
tions In which the Mlg-21s that had scrambled to intercept the Blackbird were left looking
at each other, and wondering what had happened to their quarry. He also asserted that
SR-71's had overflown Russian airspace, while NSA listening posts on the borders of the
USSR monitored Soviet air defense reaction. According to the 26-year old former USAF
sergeant, the ELiNT capabilities of the United States allowed them to keep track of virtual-
ly all Soviet military aircraft, and even to determine who was flying them at any given time.
The SR-71 was an important part of this overall capability.
In an October 15,1973 article, U. S. News and World Report stated that· "Fewer than 10
of the 24.6 million dollar airplanes are still on duty. The rest of the origi~al two wings -
several dozen planes - have been put Into mothballs." The main thrust of this article was to write the epitaph of the manned reconnaissance airplane, and specifically, the SR-71.
Where they got their figure of 24.6 million dollars is not known. Other sources have indi-
cated that the initial cost of the airframe alone was probably close to $50 million 1963
dollars, and that did not include avionics or engines. There were, of course, never two
wings of SR-71 s, and there were less than three dozen built. Their figure of less than 10
operational aircraft may have been close to accurate, but their assertion that the SR-71
was about to be retired was as inaccurate as the rest of their article. Indications are that
the SR-71 will still be flying operational missions well into the 1980's. Remotely Piloted
Vehicles, (RPVs) which were supposed to have replaced the SR-71 and U-2 recon pro-
grams, have been shrouded in even more secrecy than the Blackbirds.

There was a two seat version of the A-12, used for pilot tralnlnq, This one is in storage at
Palmdale. (John Andrews)

Protests of overflights were not limited to the Chinese. In October of 1973, at the height
of the Yom Kippur War, the Egyptian government registered a detailed protest of a viola-
tion of Egyptian airspace which could only have been accomplished by aircraft of a type
possessed by the United States exclusively. The Egyptian communique said, "The two re-
connaissance planes violated Egyptian airspace at 1105 GMT 13 October 1973 over Port
Said, went deep into Egypt at Nagaa Hammady, 590 kilom~ters south ~f Cai'ro, turned
back ov~r the capital and flew eastward in the direction of Jordan and Syria, then back to
the Mediterranean Sea. This is the first time Egypt's airspace has been violated by this
type of plane." Whether or not it was the first time that SR-71 s had overflown Egypt is
open to debate. It was obviously the first time that they had been detected by the Egyp-
tians.
Public consciousness of the Blackbirds was raised considerably by several record-
breaking and setting flights during the 1970s.
In April, 1971 USAF Lt. Cols Thomas B. Estes and Dewain C. Vick flew back and forth
across the United States twice, and made a complete circle of the Western states in under
101/2 hours. The flight covered a distance of 15,000 miles and earned them the Harmon
and Mackay Trophies for their efforts.
One of the most highly publicised flights ever made by the Blackbird came in
September, 1974. The then-existing record time for a flight from New York to London was
4 hours and 40 minutes, set by a Royal Navy F-4K Phantom in 1969. The USAF decided to
break the record. Considering the new record time, "break" hardly seems an adequate
description of what they did to the old record.


SR71 Blackbird Design



SR71 Blackbird Design 

I believe I can truly say that everything on the aircraft, from rivets and fluids, 
up through materials and power plants had to be invented from scratch. 
Clarence L. 'Kelly' Johnson (from a presentation to an AIAA Aircraft and Design 
Operations Meeting.) 

To say that the Blackbird is the product of design genius is an understatement...and not
quite accurate. The Blackbird is the product of the collective design genius of Lockheed's
famous "Skunk Works", the Advanced Development Projects Group, which gave birth to
the U·2 and the F·104, among other notable designs. Though the Skunk Works has en-
Joyed a reputation for innovation and accomplishment, they have not received half the
credit due them for their work on the Blackbird. That has been due to the secrecy surroun-
ding it's development and operational use.
In this age of high speed computers, capable of sophisticated design verification pro-
[ections, it is sometimes forgotten that the Skunk Works had to develop the Blackbird
with the tool of the pre-computer age ..... the slide rule. It was a tlrne-consurninq, expen-
sive, and sometimes exasperating method of pioneering. The fact that the Blackbird is
still the only airplane in the world capable of sustained speeds in excess of Mach 3 plus,
at altitudes of 85,000 feet or more is a tribute to the perseverance and creative genius of
Kelly Johnson and his hand-plcked Skunk Works team.
The design configuration of the Blackbird is a modified, tailless delta, with blended tor-
ward wing, called a chine. The chine acts as a fixed canard and the lift it produces at
cruise speeds reduces the forward fuselage bending moment to half and decreases drag.
The effective integration of the blended-body into the Blackbird is most evident by the
design modifications that must be made when the integrity of the design is interrupted.
For instance, incorporation of the radome housing the ASG·18 fire control radar in the
YF·12, which resulted in cut-back of the chine, necessitated addition of three ventral fins
to ensure that directional stability was maintained at high speed. The second, raised,
cockpit of the SR·71 B trainer required addition of two ventral fins for the same reason.
The high temperatures of Mach three plus flight, endured for long periods of time, were
the source of a large percentage of the design difficulties. The first assumption made in
designing a high speed anything is that you need as smooth a surface as possible to
reduce drag. But when heat was applied to smooth wing panels, they behaved like potato
chips. Eventually the chordwise corrugations that are such a recognizable feature of the
Blackbirds were added. Not only do they add strength and stability to the wing, they also
provide additional surface to radiate heat, with very little penalty in drag.
The conical camber incorporated in the leading edge of the outboard wing sections
reduce bending moment and torsion. The vertical stablizers are all moving. Conventional
rudders were considered, but found wanting because they lacked the authority for direc-
tional control in a single engine situation. The all-rnovinq surfaces are two and a half
times more effective than conventional rudders, and require less deflection, which means
less drag. They are canted inward at 15 degrees, and have a maximum movement of ± 20
degrees. A benefit of the inward-canted verticals is reduction of the rolling moment due to
sideslip and vertical deflection. This is evident at both ends of the speed spectrum. Their
effectiveness is further attested to by the Blackbird's ability to handle cross winds of up
to 35 knots at 90 degrees to runway heading.
Wind tunnel testing revealed that there was no appreciable advantage to incorporating
flaps or leading edge devices to the basic design. The large wing area generates a healthy
ground·effect cushion as it approaches the runway, making slick landings easy. Four
elevon surfaces, two outboard of the nacelles, and two inboard, act as elevators and
ailerons. Aileron deflection is ± 12 degrees.
At Mach three plus, exagerated control movements are likely to cause dramatic,
possibly catastrophic, changes in attitude. At the Blackbird's operating altitude, air densl-
sr 71 blackbird in flight photograph
www.sr-71.org



The "A·11" announced by LBJ, which was in reality the AMI, later designated YF·12A. 
First publicity photos showed the YF·12s in their CIA (mostly natural metal, ala A·12) 
finishes. (USAF) 

Kelly Johnson, head of Lockheed's advanced development projects (Skunk Works) during 
the development of the Blackbird. Johnson joined Lockheed in 1933 as a tool designer, 
and rose to the position of Chief Research Engineer by 1938. His famous projects include 
the P·38, F·80, F·104, U·2, and the Blackbird. He was photographed with the number three 
YF·12A shortly after it was announced to the public in 1964. (Lockheed) 
-

The First Public Acknowledgment Of The Existence Of The SR71 Blackbird


Acknowledgment of the existence of the SR71 Blackbird


The first public acknowledgment of the existence of the SR71 Blackbird came on February
29,1964. Barry Goldwater, the frontrunner for the Republican nomination to run for Presi-
dent, was accusing President Johnson of being more interested in social legislation for
the Great Society than in the defense of America. LBJ, in an effort to deflect Goldwater's
criticism, decided to take some of the wraps off of what had been one of the most closely
held secrets in America. The fact that the program had been ininitiated in the Eisenhower
Administration, and brought to fruition in the Kennedy Administration didn't prevent LBJ
from claiming credit for it.
The aircraft announced by LBJ was the YF-12A. He stated that: "The performance of the
A·11 far exceeds that of any other aircraft in the world today." Cruising speeds in excess
of Mach 3, at altitudes over 70,000 feet were attributed to the new design. At the time of
the announcement, no Air Force fighter designation existed for Lockheed's revolutionary
design. Reportedly, LBJ misread 'AMI' (Advanced Manned Interceptor) as 'A-11', and this
was allowed to stand (it was known that Lockheed's designations for the design evolution
of the Blackbird ran from A·1 to A·12, which lent additional credence to the A-11 designa-
tion.) If this is true, then LBJ can claim some sort of record for misstatement, for when he
followed up his February 29 A-11 announcement with a July 25 revelation of the develop-
ment of the SR-71, he juxtaposed Reconnaissance Strike (RS·70, as the ill-fated XB-70 was
to have been operationally known.) into Strike Reconnaissance. The announcement of the
SR·71 was blatant political hay-making. The Republican Convention was in session in San
Francisco, and its speakers had criticized LBJ for concentrating on missiles rather than
developing a new manned bomber. The Republican Platform charged that the Johnson ad-
ministration had failed to initiate a single new major strategic weapon system. Since the
cancelled RS-70 had been meant to operate as a Strategic Reconnaissance strike aircraft,
it was not unreasonable to assume that it's only other companion in Mach 3 land might
not do the same. And to solidify this impression, SR: Strike-Reconnaissance, became SR:
Strategic Reconnaissance.
The first public showing of a Blackbird was in the fall of 1964, at Edwards AFB, Califor-
nia. The YF·12A was the interceptor which would guard our shores from the hordes of
Russian bombers poised just over the horizon. It was widely reported as being the follow-
on to the ill-fated North American F·10B Rapier, which was to have been the escort for our
own hordes of RS-70's. The YF·12A did, in fact, use the Hughes ASG-1B radar and the
GAR-9 missiles that had been developed for the F-10B. Three YF-12A's were in con-
spicuous evidence at various times during a test program that seemed strangely sporadic
to some aerospace reporters of that time. The press reported that other 'A-11s' were being
tested at a secret site in Nevada. (Possibly Watertown Strip at Groom Dry Lake, also
known as 'The Ranch') The YF-12 testing took place at Edwards AFB, California. In addi-
tion to the three YF-12A (serial numbers 06934, 35, 36) and the SR-71 prototype, which was
modified from YF·12A 06937, a further eight were reported to have been constructed.  In fact, there were no other YF-12s, and the reason that their test program was not pursued
feverishly was probably that the operational mission of the Blackbirds was never meant to
be anything but clandestine reconnaissance. By the time that the airplane was revealed to
the public, the test program was well advanced. Lockheed's test pilots, headed by Louis
W. Schalk, and including William C. Park, Robert J. Gilliland, and James D. Eastham had
conducted such an outstanding test program that they received, as a group, the Society
of Experimental Test Pilots' Iven C. Kincheloe award for 1964.

The sharply pointed nose of the CIA's A·12 is one of the principle differences between it 
and the SR·71. The surviving A·12s are stored at Lockheed's Palmdale facility. They carry 
no markings, but exhibit the natural metal that most carried during their operational 
careers, with Black paint applied only to the areas that attained the highest ln-Illqht 
temperatures. (John Andrews) 


SR71 Blackbird Introduction By A Pilot


SR71 Blackbird Introduction By A Pilot 


It is cold up here. At least minus 60 degrees Centigrade most of the time. There is not a
lot of weather. Clouds almost never get within 10,000 feet of this altitude. You can see
almost forever ... even make out the curvature of the earth. The sky is very, very dark blue.
Ultramarine. You can see the stars at any time of the day. Not much air up here either.
Humans can't survive up here without pressurization. Their blood would boil instantly,
and their skin would flake off like a just-right pie crust. Not that we see many humans up
here. Oh, we get the occasional astronaut or cosmonaut coming or going. And the teem-
ing masses down there do keep sending up weather balloons, trying to figure out what the
jet stream has In store for them.
There are some people who do come through fairly regularly. They are members of the 9th Strategic Reconnaissance Wing, which is part of the United States Air
Force. They are home-based at Beale Air Force Base in California, but I have heard that
they operate world-wide from what they euphemistically term their 'Forward Operating
Locations'. About half of them mosey along nice and slow, taking time to get a good look
at the scenery. These sedate gents fly what they call the U-2, or more familiarly, 'The
Dragon Lady'.
The other half of this group hardly gives you a chance to see them
coming before they are gone. They fly the SR-71, and it moves through here at better than
the muzzle velocity of a 30.06 bullet. Whole lot faster than those transient astros too! I
hear there are only a few of them ... probably not more than a couple of dozen pairs. Did I
mention that? They come in pairs, a Pilot and a Reconnaissance Systems Operator. Man,
do they come through! If that SR-71 wasn't so big, you might never see them. You'd know
they had been through though. There is that thunderclap of a triple-sonic boom, followed
by a blast of heat radiating from black skin that reaches temperatures of 1100 degrees
Fahrenheit. At night, the tailpipes glowing white hot can be seen for a long ways off. The
rest of the airplane ranges from about 450 to 550 degrees. Friction does that. You can't
move through the air ... even as little air as there is up here ... at better than Mach three for
extended periods without causing lots of friction.
Yessir, that SR-71 is some airplane! Oh, I know there are others that have flown faster.
We used to see the X-15 come through here on it's way to lots higher and goin' lots faster.
And there are those astronauts with their spacecrafts ... why, they even got one now that
sort of looks like an airplane! Course, whenever we have seen it, it is either acting like a
regular spacecraft, riding a rocket, or impersonating a rock.
But that SR-71 is pure airplane. Fastest airplane in the world. It doesn't just go fast in
spurts either. It takes off under it's own power, gets up here, settles into Mach three plus,
and keeps on keepin' on at that rate! We haven't seen another airplane that could do that.
The secret of that extended Mach three performance is in the engines. Those J-58's get
downright economical to operate once you get them going fast enough to turn into ram-
jets! Up here, the engine only produces about 17% of the thrust, with the inlet producing
58% and the exhaust producing the rest. Put that economy together with 80,000 pounds
of fuel in a 60,000 pound airframe and you get some pretty amazing ranges.
Sure sounds like something out of Buck Rogers in the 21st Century, doesn't it? Well,
the amazin' thing is, the SR and it's cousins been doin' this for at least twenty years!
Makes you wonder if maybe there was some kind of a time warp back there in the late
fifties-early sixties, when those 150 or so hand-picked engineers in Kelly Johnson's Skunk
Works at Lockheed turned out this airplane. Maybe there was. Lockheed's manufacturing
numbers for the SR-71 series start with 2001.

SR71 Blackbird - A-12 Development


SR71 Blackbird - A-12 Development 


The first  SR71 Blackbirds were cloaked in secrecy at that time, and to this day remain an
enigma. The Blackbird was designed as a follow-on to the U-2, at the behest of the CIA and
with CIA funds. Shortly after the U-2 began flying operational missions, it became obvious
that the high-flying, but slow, U-2 would become increasingly vulnerable to some sort of
anti-aircraft system, whether air-to-air or surface-to-air. Lockheed was already working on
possible solutions when Kelly Johnson, head of Lockheed's advanced development Pro-
jects (Skunk Works), was summoned to Washington in 195B. A competition to develop the
successor to the U-2 was initiated, with Lockheed's designs being evaluated as superior
to those of Convair or the Navy. The contract was given to Lockheed in 1959, and the first
flight of the A-12 took place on April 26,1962. Eighteen A-12's were built for the CIA.
They are serial numbers 06924 through 33, and 06938 through 41 (06934 through 37 were
developed into USAF YF-12s and SR-71s). The principle difference between the A-12 and
follow-on Blackbirds is that the A-12 was a single seat aircraft, with recon equipment oc-
cupying what became the Fire Control Officer (FCO) in the YF-12 or Reconnaissance
Systems Officer (RSO) seat in the SR-71.
Preliminary design work on the CIA's A-12 was well underway when Francis Gary
Powers and his U-2 were shot down over central Russia on May Day, 1960. The resulting
international uproar caused cancellation of an impending summit meeting between Presi-
dent Eisenhower and Russian Premier Kruschev. Reportedly, it also ultimately elicited a
promise from Ike, to Kruschev, never to overfly Soviet territory again. There is no evidence
to suggest that the CIA ever broke that promise with their A-12's. In fact, there is no public
evidence to suggest that the CIA even flew the A-12 operationally! Most speculation
would have you believe that they did, in fact, operate on a world-wide basis with their
Blackbirds. But there is also evidence that at least half of the A-12 fleet was stored inside
a hangar at Palmdale subsequent to development testing. Whether or not the CIA did
operate it's A-12s operationally may remain a mystery for years to come. There are cur-
rently eight aircraft in storage at Palmdale, with six unaccounted for. Were these six all
lost in the test program? Or operationally? What happened to the pilots? These and other
questions regarding the blackest of the Blackbirds may not be answered for years to
come, but when they are, what great war stories they will make!
In September, 1964 Kelly Johnson received the Collier Trophy for his design work on
the Blackbird. The ceremony was held at the White House, and was followed shortly
thereafter by a public demonstration of the YF-12A at Edwards AFB. It was the first close-
up look at the YF-12A for the press, and resulted in a blizzard of publicity which reinforced
the interceptor mission for the Blackbird. The speculation about just exactly how fast and
how high the Blackbird would fly was heightened by all of this. publicity. It was satisfied
on May 1, 1965, when the YF-12A was flown to nine new records for speed and altitude.
The USAF team of pilots was lead by Colonel Robert L. 'Silver Fox' Stephens, the first
military pilot to fly the YF-12.
Stephens, with his Fire Control Officer (FCO), Lt. Col. Daniel Andre, averaged 2,062
MPH (Mach 3.17) in out-and-back runs over the 15/25 kilometer straight-away course to set
an absolute world speed record, as well as a new jet class record. They also set the
records for absolute sustained altitude (80,000 feet), and jet class altitude record.
The other Air Force pilot was Major Walter F. Daniel, who teamed with two Fire Control
Officers, Major Noel T. Warner, and Captain James Cooney to set records for the 1,000
and 500 kilometer closed course. The YF-12A also set records with 1,000 and 2,000
kilogram payloads that day. These records had previously been held by the Soviet Union's
E-266, a pre-production development version of the Mig-25.
06937, the prototype SR-71 made it's first flight on December 22,1964. Production ver-
sions of the SR-71 were delivered to the Air Force beginning in January, 1966. Lockheed's
production number for the SR-71 begins with the number 2001, which is serial number
17950, and runs consecutively through 2032, serial number 17981.
The 9th Strategic Reconnaissance Wing was organized effective June 25, 1966 as the
unit to fly the SR-71. The 9th's history dates to the days when the only military aircraft
were flown by the Signal Corps.
The 9th traces it's component squadrons, the 1 st and the 99th, to pre-World War I. The
1st was organized in 1913 to assist General Pershings's 2nd Army Division guard the Mex-
ican border. It is a significant fact of it's history that the first ever American military recon-
naissance flight was flown by a Curtiss Flyer over France in 1916 by the 9th. The 1st and
99th Squadrons flew combat missions over France throughout World War I. After World
War I they were reorganized as the 9th Bombardment Group.
The group flew B-29's during World War II, and was inactivated at the end of the war, on-
ly to be reactivated within a year as the 9th Strategic Reconnaissance Group. In April,
1950 the wing was redesignated the 9th Bombardment Group and given B-47's, and a
change of base, from Fairfield-Suisun AFB, California (Travis AFB), to Mountain Home
AFB. While at Mountain Home, the 9th made the longest non-stop point-to-point flight
that any SAC aircraft had attempted to that date. Using aerial refuelling, the B-47's of the

One of the few A-12s which were painted nearly all-black. The sharper nose profile, with
more triangular-shaped chines are most evident in this view_ Also of interest in an ap-
parent flight test camera housing at the rear of the fuselage. The direction in which it is
pointing indicates that it may have been mounted to record the launching of the 0·21
Drone. (See page 22) (USAF)
9th flew 8,300 miles, from Mountain Home to New Zealand.
Titan missles began to arrive at Mountain Home in 1961, and the 9th was redesignated
the 9th Strategic Aerospace Wing. When the Tactical Air Command was slated for Moun-
tain Home in 1966, it meant another inactivation for the 9th.
When it was decided that the SR-71 would go into SAC's operational inventory, Beale
AFB, California was chosen as it's home base. The 4200th Strategic Reconnaissance
Wing was activated on January 1, 1965. The 4200th would be the training wing for the
SR·71, and to accomodate the special requirements of SR training, the Air Force spent $9
million to build new hangars, fuel storage facilities, a physiological building, new parking
ramp, engine test stand, and runway arresting barrier. The first SR·71A was delivered in
January, and was followed a few days later by the first of two SR·71 B's. The 4200th was in-
activated on June 22,1966, and the 9th Strategic Reconnaissasnce Wing, with the 1st and
99th Strategic Reconnaissance Squadrons was activated. The 9th Wing would ac-
complish all of the training, and conduct operational missions from it's headquarters at
Beale.
On April 17, 1967 the Silver Fox climbed into an SR-71 and made the longest Mach 3
flight in history. Their flight of over 14,000 miles earned the FAI's Gold Medal for Colonel
Robert L. Stephens and his RSO, Lt. Col. Kenneth D. Hurley. The tremendous speed and
range of the SR·71 gave SAC a reconnaissance capability that was so far removed from any
previous systems that it's implications were staggering. The SR-71 could survey a strip of
ground 30 miles wide, from Sacramento to Washington, D.C., in an hour!
While the SR·71 was becoming operational, the YF-12's were winding up a test program
that was so successful that the 500 man unit was awarded the Air Force Outstanding Unit
Citation. This program had been conducted by personnel from Air Force Systems Corn-
mand, SAC, and Air Defense Command. The YF·12's went into flyable storage at the end
of this program, and remained inactive until NASA expressed an Interest in using them to
do SST research. (There was absolutely no doubt in anyone's mind at that point in
time ... the late 60's ... that the United States would have the worlds best Supersonic
Transport. And most people also believed we would win the Vietnam War.)