WB-57

WB-57
Name	Martin WB-57
Caption	WB-57F reconnaissance aircraft
Type	High-altitude strategic reconnaissance aircraft
Manufacturer	Glenn L. Martin Company
First flight	1953 (B-57 prototype series)
Introduced	1955 (RB-57F program 1963 modifications)
Status	Retired (military), limited civilian research use
Primary user	United States Air Force
Produced	1950s
Number built	403 (B-57 family); 21 WB-57 variants and conversions

WB-57 The WB-57 is a high-altitude reconnaissance and atmospheric research aircraft derived from the Martin B-57 Canberra bomber series, adapted for United States Air Force meteorological and strategic reconnaissance roles during the Cold War and postwar periods. Developed by the Glenn L. Martin Company and later modified under programs involving the Air Force Systems Command and NASA, the type served alongside aircraft such as the Lockheed U-2, Boeing B-52 Stratofortress, and Convair B-58 Hustler in specialized missions. The WB-57 participated in operations connected to events including the Cuban Missile Crisis, Operation Dominic, and atmospheric sampling linked to Nuclear Test Ban monitoring.

Development and Design

The conversion of the Martin B-57 Canberra airframe into the WB-57 variant occurred during a period of rapid reconnaissance innovation alongside projects like the Lockheed SR-71 Blackbird and programs run by the Central Intelligence Agency. Initial design work incorporated lessons from the English Electric Canberra origins and involved collaboration with contractors such as Pratt & Whitney and instrumentation firms linked to Raytheon and General Electric. Modifications emphasized pressurization enhancements comparable to developments in the Boeing 367-80 research lineage, installation of specialized sensors akin to those used on the RB-47 Stratojet, and structural strengthening reminiscent of the McDonnell Douglas F-4 Phantom II fatigue studies. Aerodynamic changes paralleled efforts seen in the Lockheed F-104 Starfighter program to achieve sustained operations at stratospheric altitudes.

Operational History

Deployed with units such as the Air Weather Service and the 7th Weather Reconnaissance Squadron, the WB-57 operated from bases including Eglin Air Force Base, Davis-Monthan Air Force Base, and forward sites in Japan, Thailand, and Bermuda. Its operational timeline intersected with strategic episodes involving the Cold War, where it conducted atmospheric sampling after events like the Castle Bravo and Operation Buster-Jangle nuclear tests, and supported crises including the Vietnam War by providing meteorological data used alongside assets like the C-130 Hercules. The platform also featured in cooperative research with NASA during high-altitude atmospheric composition studies paralleling work on the High Altitude Research Project and shared missions with instrumentation programs from the Department of Energy and the Los Alamos National Laboratory.

Variants

Variants derived from the B-57 family included RB-57A, RB-57B, RB-57D, RB-57F, and WB-57 series, paralleling variant development seen in types like the Boeing B-47 Stratojet and Convair CV-880. The RB-57D featured extended wings comparable to de Havilland Vampire high-altitude research experiments, while the RB-57F upgrade added turbofan engines and pressurization improvements reflecting trends in conversions similar to the Douglas A-3 Skywarrior adaptations. Civilian-modified WB-57Fs operated by NASA incorporated avionics and sensor suites akin to those on research variants of the Lockheed C-141 Starlifter.

Technical Specifications

Typical specifications for WB-57 family conversions resembled high-altitude platforms such as the English Electric Canberra and included long-span wings, reinforced landing gear like that used on the Boeing 737 development prototypes, and powerplants from firms including Rolls-Royce and Pratt & Whitney. Operating ceilings approached the stratosphere comparable to the Lockheed U-2 with service ceilings reported near altitudes achieved by the Northrop Grumman RQ-4 Global Hawk in later eras. Avionics suites integrated navigation and sensor systems akin to packages from Honeywell and electro-optical equipment comparable to arrays developed for the General Atomics MQ-1 Predator reconnaissance family.

Missions and Roles

Missions ranged from high-altitude atmospheric sampling and radiation monitoring after nuclear detonations to scientific research tied to stratospheric chemistry studies involving ozone research programs run with NASA and the National Oceanic and Atmospheric Administration. Operational roles overlapped with strategic reconnaissance undertaken by the Lockheed U-2 and tactical collection similar to tasks assigned to the RF-4 Phantom II, while flight profiles supported studies in collaboration with institutions such as Massachusetts Institute of Technology and California Institute of Technology on upper-atmosphere physics. The aircraft also performed airborne calibration and sensor testing for contracts with organizations including the Defense Advanced Research Projects Agency and the Air Force Research Laboratory.

Operators and Aircraft Survivors

Primary military operators included units of the United States Air Force and detachments associated with the Air Weather Service and Air Force Systems Command. Post-service operators comprised NASA and civilian contractors conducting high-altitude research, with preserved airframes displayed at museums such as the National Museum of the United States Air Force, the National Air and Space Museum, and regional aviation museums near Tucson, Arizona and Dayton, Ohio. Several airframes remain in storage or under restoration by organizations connected to Smithsonian Institution conservation programs and independent restorers associated with the Commemorative Air Force.

Category:United States military reconnaissance aircraft Category:Glenn L. Martin Company aircraft