Hear the sound of the B-36

Flying Aircraft Carriers of the USAF: Project FICON

Go to the Home PageIn the early years of the cold war, the United States Air Force was faced with a requirement for an airplane that could photograph targets deep inside the Soviet Union. Many strategic targets were inaccessible to conventional U. S. reconnaissance airplanes. There was no airplane with sufficient range to reach these targets that also possessed the speed and maneuverability to evade Soviet air defenses.

It was envisioned that Fighter Conveyer (FICON) composite aircraft would perform long-range reconnaissance missions into areas equipped with anti-aircraft defenses that existing reconnaissance airplanes could not penetrate. FICON operations would rely on the great range of the Convair RB-36 to carry a jet powered parasite airplane to a location within range of targets inside defended territory. The high speed and maneuverability of the parasite would allow it to dash into enemy territory to take pictures of the targets and then rendezvous with its flying aircraft carrier to be carried back to its home base. Many targets that were out of range of conventional reconnaissance airplanes would be accessible to the FICON parasite airplane.

History of Project FICON published.

The American Aviation Historical Society published the first installment of my history of Project FICON in the Summer 2003 edition of their Journal. Join the A.A.H.S. to get your copy of the entire history.

American Aviation Historical Society The American Aviation Historical Society. was founded in 1956 as a non-profit educational organization. Now you can join over 3,000 aviation enthusiasts worldwide in a common cause to share in the preservation and propagation of the rich heritage of American Aviation.

Review of Hobbycraft 1/144-scale FICON GRB-36D and RF-84K Hobbycraft has released a 1/144-scale model of the FICON composite aircraft system. I have prepared an illustrated review of the kit.

In the years following World War II, the Air Force modified many heavy bombers to serve as reconnaissance airplanes. Boeing B-29 Superfortresses were converted to serve as photographic reconnaissance platforms. The reconnaissance versions of the Superfortress were given the designation F-13. They had great endurance and could carry large format cameras. These reconnaissance bombers flew long missions along the perimeter of Soviet Bloc countries. They took long-range oblique photographs into the interior of the target countries using extremely long focal-length telephoto lenses. The detailed images were recorded on film that was 18 inches wide. They also used the electronic reconnaissance gear to ferret out sources of radio, radar, and telemetry signals within the target countries.

The giant Convair B-36 was used extensively for reconnaissance in the early post-war period. They were built in two major versions, the standard B-36 bomber variant and the RB-36 version tailored for aerial reconnaissance. The B-36 bomber was equipped with four bomb bays. The RB-36 version had an additional pressurized compartment for camera gear in place of the forward bomb bay of the B-36 bomber.

In the early years of its deployment, the RB-36 was very difficult to intercept. It could cruise at altitudes that jet fighters could not reach. If a fighter did succeed in climbing to the altitude of the RB-36, the lower wing loading of the RB-36 allowed it to turn tighter than the fighter could. The RB-36 could simply turn out of the way of a fighter as it mushed along at a speed only slightly higher than its stall speed.

The maneuvering advantage of the RB-36s did not last long. The Soviet Union was quickly developing more capable interceptors with superior high altitude performance. It was clear that jet fighters with the ability to intercept the RB-36 would be entering service in the Soviet Air Force by the middle of the 1950s. It would become too dangerous to operate the RB-36 on reconnaissance missions near the borders of the Soviet Union.

By June 1954, the Air Force would change the primary mission of the four Strategic Reconnaissance (Heavy) Wings that were equipped with RB-36s from reconnaissance to bombing. The RB-36s would no longer be used for the mission of strategic reconnaissance. They were modified to carry nuclear weapons as strategic bombers.

A new aircraft was needed for the strategic reconnaissance role. The new aircraft needed the long range of the RB-36 and the speed and maneuverability of a jet fighter. Many thought that it would not be possible to accomplish the projected mission with a conventional airplane. It was proposed that strategic reconnaissance missions could be performed by tactical jet fighters that were launched from RB-36s near the borders of the target countries.

In 1950, in anticipation of the eventual retirement of the RB-36 fleet from the reconnaissance role, the Air Force initiated a program to equip RB-36s with a mechanism to carry a smaller reconnaissance airplane. The smaller airplane would have the speed and maneuverability to penetrate enemy air defenses in the place of the RB-36. The RB-36 would transport the parasite to the enemy zone, where it would be released to perform its own reconnaissance mission. After completing its mission, the parasite would rendezvous with the RB-36 to be retrieved and carried back to its home base.

EF-84E Thunderjet, 1952

Initial tests were conducted with a modified Convair RB-36F and straight-winged Republic F-84E Thunderjet at the Convair factory in Fort Worth, Texas.

GRB-36F, 49-2707 with F-84E, 49-2430 over Texas in January 1952 Major Clarence "Bud" Anderson made the first attempt to hook F-84E, 49-2115 to the GRB-36F, 49-2707 over Texas on January 9, 1952. A B-29 Superfortress is flying chase off their left wing. Air Force Photo 46206AC via National Archive.

Bud Anderson is a WWII Triple Ace who flew the P-51 Mustang, "Old Crow" while assigned to the 357th Fighter Group "Yoxford Boys", 8th Air Force, Leiston Field, United Kingdom.

Visit the Clarence E. "Bud" Anderson web site. I highly recommend buying and reading a copy of his book, To Fly and Fight. It contains his first person accounts of the early FICON test flights. Visit the Bud Anderson web site

FICON flight tests moved to the Air Proving Ground at Eglin AFB, Florida in the second half of 1952. Photo courtesy: Bud Anderson.

YRF-84F Thunderstreak, 1953-1954

GRB-36F, 49-2707 and YRF-84F, 49-2430 Follow-on FICON tests were conducted with the sweptwing prototype YRF-84F Thunderstreak at the Convair factory in Fort Worth and the Air Proving Ground at Eglin AFB in 1953 and 1954. Photo courtesy: Air Force Museum.

Republic YRF-84F, 49,2430 at Fort Worth, Texas in 1953 The YRF-84F had served as the prototype of the swept-wing F-84F Thunderstreak. It had been modified from a straight-wing F-84E. Note the hook on the nose for catching the trapeze and the downward sloping horizontal stabilizer to clear the bomb bay of the B-36. Note also the pin protruding from the side of the fuselage which provided another point of attachment to the trapeze. Republic photo #26-1632 courtesy: Fairchild Hiller.

RF-84K Thunderflash, 1955-1956

RF-84K, 52-7258 at Edwards AFB, California in late 1955 Twenty-six Republic RF-84F Thunderflashes were converted to the FICON parasite configuration. Ten RB-36Ds were converted to serve as FICON carriers. Air Force Photo B-161916AC via National Archive.

Republic RF-84F/K Thunderflash

Wingspan: 34 feet

Length: 48 feet

Wing Area: 325 square feet

Maximum Take-off Weight: 27,000 pounds

Armament: 4x 50 caliber machine guns

Powerplant: 7,800 pound s.t. J65 turbojet

GRB-36D, 49-2696 and FICON RF-84F, 51-1847 at Fort Worth in December 1954 Initial tests of the production version of the FICON GRB-36D/RF-84F composite aircraft were conducted by Convair in Fort Worth in December 1954. Convair photo 26-1916 courtesy: Lockheed-Martin.

GRB-36D, 49-2694 and RF-84K, 52-7258 at Edwards AFB in March 1956 The Air Force conducted evaluations of the FICON composite aircraft system at the Air Proving Ground at Eglin AFB, Florida, the Air Force Special Weapons Center at Kirtland AFB, New Mexico, and the Air Force Flight Test Center at Edwards AFB, California in 1955 and 1956. Air Force Photo A-162244AC via National Archive.

The FICON Flight Handbook, Illustrated Parts Breakdown, and Maintenance Handbook defined the modifications and operational procedures of the composite aircraft system.

Trapeze Operator's Station illustration from FICON Flight Handbook Trapeze Operator's Station illustration from the Flight Handbook for the GRB-36D/RF-84F Composite Aircraft. Courtesy: Roger Cripliver.

FICON Trapeze Mechanism An illustration of the trapeze mechanism from the GRB-36D/RF-84K Limited Phase IV Flight Evaluation document. Courtesy: Air Force Flight Test Center history Office.

Interior arrangement from Standard Aircraft Characteristics document Cutaway view of the GRB-36D from the Standard Aircraft Characteristics document for the Consolidated GRB-36D and the Republic RF-84F. Courtesy: Air Force Museum.

RBF-84F Thunderflashes of the 91st Strategic Reconnaissance Squadron in November 1955 The 91st Strategic Reconnaissance Squadron operated FICON RBF-84F Thunderflashes at Larson AFB, Washington. From front to rear these are 52-7268, 52-7266, 52-7269, 52-7260, and 52-7262. Republic photo16975 via Fairchild Hiller.

GRB-36D, 49-2692 and RBF-84F, 52-7266, from Dave Menard via John Graff The 348 Bombardment Squadron operated GRB-36D carriers at nearby Fairchild AFB, Washington. Photo courtesy: Dave Menard via John Graff.

FICON RBF-84F, 52-7269 is lowered from the bomb bay of GRB-36D, 49-2696 at Fairchild AFB, Washington in December 1955 FICON training operations were undertaken in December 1955, but they were concluded in January 1956 after several pilots from the 91st Strategic Reconnaissance Squadron had damaged their airplanes trying to hook on to the trapeze. Photo courtesy: Air Force Museum.


The complex and dangerous FICON composite aircraft system was overtaken by the development of the Boeing B-52 Stratofortress, the Lockheed U-2, and aerial refueling using the flying boom method. The FICON Thunderflashes were transferred to the Air National Guard. The GRB-36D carriers were scrapped in short order.

Several of the FICON parasite airplanes are preserved in museums.

YRF-84F, 49-2430 in the Air Force Museum, Dayton, Ohio Today the YRF-84F, 49-2430 resides in the Air Force Museum. Photographer: Brian Lockett.

RF-84K, 51-1847 at the United States Air Force Museum, Dayton, Ohio The pre-production RF-84K, 51-1847 is also at the United States Air Force Museum. Photo courtesy Greg Spahr.

Link to the United States Air Force Museum

RF-84K, 52-7259 at the Yankee Air Museum, Ypsilanti, Michigan RF-84K, 52-7259 is at the Yankee Air Museum, Ypsilanti, MI. It has been restored since this photograph was taken. Photo courtesy Greg Spahr.

Link to the Yankee Air Museum

RF-84K, 52-7265 at the Planes of Fame Museum, Chino, California on March 15, 1997 RF-84K, 52-7265 at the Planes of Fame Museum at Chino, CA on March 15, 1997. Photographer: Brian Lockett.

RF-84K, 52-7265 at the Planes of Fame Museum, Chino, California on October 28, 2000 RF-84K, 52-7265 at the Planes of Fame Museum on October 28, 2000.

Link to the Planes of Fame Museum

RF-84K, 52-7266 at the Wings Over the Rockies Museum, Denver, Colorado RF-84K, 52-7266 is currently undergoing restoration at the Wings Over the Rockies Museum, Denver, Colorado. Photo courtesy: John Graff of the Wings Over the Rockies Museum restoration staff.

Link to the Wings Over the Rockies Museum

Rumor has it that there is another RF-84K at the George T. Baker aviation school, just off the departure end of 9L at the Miami Intl Airport.

Other Parasite Fighter Programs

McDonnell XF-85 Goblin In 1948-49, a pair of McDonnell XF-85 Goblins had been test flown from a Boeing EB-29B.

Project Tom-Tom In 1956 Project Tom-Tom explored an alternative method of attaching a Republic RF-84F Thunderflash to each wingtip of a Peacemaker.

Books about B-36 Peacemakers available from

Dennis Jenkins' Magnesium Overcast Dennis Jenkins has produced another large B-36 book: Magnesium Overcast.

Meyers Jacobsen's Convair B-36 Peacemaker: A Photo Chronicle Meyers Jacobsen has authored another book about the Convair B-36 Peacemaker: A Photo Chronicle.

Convair B-36 Convair B-36 : A Comprehensive History of America's 'Big Stick by Meyers K. Jacobsen. Mr. Jacobsen has been compiling this history for at least a quarter of a century.

Warbird Tech: Convair B-36 Peacemaker Warbird Tech: Convair B-36 Peacemaker . This volume by Dennis Jenkins contains a surprising amount of information that did not get into "The Big Stick".

B-36: Saving the Last Peacemaker The history of the efforts to preserve B-36J, 52-22827 at Fort Worth is well documented in "B-36: Saving the Last Peacemaker"; Second Edition, an html book on CD.

Main B-36 Page Go to the main Convair B-36 page.

Go to the home page of the Goleta Air and Space Museum. Go to the Home Page

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