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Lockheed Have Blue

Stealth Technology Demonstrator / X-Plane

Lockheed Have Blue

Stealth Technology Demonstrator / X-Plane

OVERVIEW
SPECIFICATIONS
ARMAMENT
VARIANTS
HISTORY
MEDIA
OVERVIEW



Have Blue - despite the loss of both prototypes - served to showcase the viability of several stealth-minded technologies that were eventually implemented into the classic Lockheed F-117 Nighthawk stealth fighter.
National Flag Graphic
ORIGIN: United States
YEAR: 1977
STATUS: Retired, Out-of-Service
MANUFACTURER(S): Lockheed Martin - USA
PRODUCTION: 2
OPERATORS: United States (retired)
SPECIFICATIONS



Unless otherwise noted the presented statistics below pertain to the Lockheed Have Blue (HB1001) model. Common measurements, and their respective conversions, are shown when possible.
CREW: 1
LENGTH: 47.24 feet (14.4 meters)
WIDTH: 22.47 feet (6.85 meters)
HEIGHT: 7.55 feet (2.3 meters)
WEIGHT (EMPTY): 8,951 pounds (4,060 kilograms)
WEIGHT (MTOW): 12,500 pounds (5,670 kilograms)
ENGINE: 2 x General Electric J85-GE-4A turbojet engines.
SPEED (MAX): 600 miles-per-hour (965 kilometers-per-hour; 521 knots)




ARMAMENT



None.
VARIANTS



Series Model Variants
• Have Blue - Program Name.
• HB1001 - Initial program prototype; crashed/lost in testing.
• HB1002 - Second program prototype with changes instituted included revised aft-fuselage section; crashed/lost in testing.


HISTORY



Detailing the development and operational history of the Lockheed Have Blue Stealth Technology Demonstrator / X-Plane.  Entry last updated on 10/22/2018. Authored by Staff Writer. Content ©www.MilitaryFactory.com.
Have Blue was the forerunner to the classic Lockheed F-117 "Nighthawk", the so-called stealth fighter that was actually a bomber. Have Blue, also constructed by Lockheed, was devised as a proof-of-concept aircraft intended to prove the viability of a stealth-centric aircraft including Fly-By-Wire controlling, stealth body designing and stealth body materials. The result was a wholly unique aircraft in the history of aviation. The Have Blue prototypes mimicked the finalized F-117 in both form and function and provided engineers with the needed data when forging ahead with the Nighthawk product. Two prototypes were built for the program from 1977 to 1978 but both were eventually lost during testing.

At the time of the program's origination, the United States Air Force's (USAF) primary opponent on the global stage remained the Soviet Empire and, with it, its broad network of air defense systems and high-speed interceptors. To bypass this network, it was realized that a supersonic, high-flying platform was no longer a viable option given that Soviet air defenses had advanced much too far. Instead, thought was given to developing a subsonic platform capable of simply flying into and out of said defenses through the use of stealth. Stealth would be accomplished by a peculiar shaping of the aircraft as well as non-afterburning turbojet engines and Radar-Absorbent Materials (RAMs) coating the aircraft's "skin".

Design and development of the aircraft fell to Lockheed's vaunted "Skunk Works" arm and computer programs aided engineers in refining the base concept. The end-product was an arrowhead-shaped aircraft with a faceted fuselage and low-set blended wing mainplanes. No horizontal tailplanes were used - instead, inward-canted planes became the only vertical surfaces to be featured. Structural dimensions included a length of 47.2 feet, a wingspan of 22.5 feet and a height of 7.5 feet. Empty weight was 8,950lb against an MTOW of 12,500lb. A conventional wheeled/retractable tricycle undercarriage was featured for ground running.

Internally, the aircraft carried one pilot under a framed, triangular-shaped canopy and position just aft of the sharp nosecone assembly. Propulsion power was served from 2 x General Electric J85-GE-4A non-afterburning turbojet engines and these provided the aircraft with a maximum speed of 600 miles per hour. The exhaust ports of the engines were purposefully designed and aided in reducing the heat signature of the aircraft, particularly from the rear. The fuselage and wings were extended beyond these ports for the same reason and the intakes were shrouded with grille-like panels.

While the Have Blue demonstrator aircraft exhibited roughly the same faceted shaping and planform of the F-117, it was dimensionally smaller than the finalized Nighthawk bomber in USAF service and the vertical tailplanes of the F-117 were outward-canted as this was eventually found to provide better stability. So low was the hope that these diamond-shaped aircraft would realistically fly that the design came to be known as the "Hopeless Diamond" by engineers.




Lockheed Have Blue (Cont'd)

Stealth Technology Demonstrator / X-Plane

Lockheed Have Blue (Cont'd)

Stealth Technology Demonstrator / X-Plane



Two prototypes were ultimately constructed for the Have Blue program and these actively flown as "HB1001" and "HB1002" (under complete secrecy). HB1001 went airborne for the first time on December 1st, 1977 and particular attention was paid by engineers to the Fly-By-Wire (FBW) (quadruple redundant) system at play - the Have Blue concept was essentially inherently unstable as aircraft went so external pilot-assistance became mandatory. On May 4th, 1978, on the aircraft's 36th flight, the prototype suffered a hard landing which damaged one of the main undercarriage legs. A lack of fuel then caused a flameout of one of the engines. Unable to land, the test pilot ejected to safety and the prototype crashed.

HB1002, with a revised rear fuselage section, went into the air for the first time on July 20th, 1978. However, its time in the skies was also short-lived for, on July 11th, 1979, a hydraulic leak sparked an engine fire and loss of hydraulic pressure. Again the test pilot ejected to safety but the prototype was lost in the ensuing crash.

Even with the loss of both Have Blue prototypes during testing, the project was still considered a success in the eyes of program observers and nevertheless supplied the needed framework for the F-117 to follow. The press was already somewhat aware that something was afoot by the time of the late 1970s but it was not until the F-117's complete unveiling in 1988 when the concept of a stealth-minded fighter became truly realized to the public. Before long, the idea of a largely faceted fuselage was dropped as computer testing showed curves could be applied and still maintain stealth - which is why the B-2 was able to be finalized with its smooth contours.

Today, the Lockheed F-22 Raptor fighter and F-35 Lightning II strike platform both benefit from the technological breakthroughs offered by the Have Blue program. Of note are the type's combination of faceted surfaces as well as rounded contours.




MEDIA









Our Data Modules allow for quick visual reference when comparing a single entry against contemporary designs. Areas covered include general ratings, speed assessments, and relative ranges based on distances between major cities.

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Relative Maximum Speed Rating
Hi: 750mph
Lo: 375mph
    This entry's maximum listed speed (600mph).

    Graph average of 562.5 miles-per-hour.
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Unit Production Comparison
Comm. Market HI*: 44,000 units
Military Market HI**: 36,183 units
2
2

  * Commercial Market High belongs to Cessna 172.

  ** Military Market High belongs to Ilyushin Il-2.


Supported Roles
A2A
Interception
UAV
Ground Attack
CAS
Training
ASW
Anti-Ship
AEW
MEDEVAC
EW
Maritime/Navy
SAR
Aerial Tanker
Utility/Transport
VIP
Passenger
Business
Recon
SPECOPS
X-Plane/Development
A2A=Air-to-Air; UAV=Unmanned; CAS=Close Support; ASW=Anti-Submarine; AEW=Airborne Early Warning; MEDEVAC=Medical Evac; EW=Electronic Warfare; SAR=Search-Rescue
Commitments / Honors
Military lapel ribbon for Operation Allied Force
Military lapel ribbon for the Arab-Israeli War
Military lapel ribbon for the Battle of Britain
Military lapel ribbon for the Battle of Midway
Military lapel ribbon for the Berlin Airlift
Military lapel ribbon for the Chaco War
Military lapel ribbon for the Cold War
Military lapel ribbon for the Cuban Missile Crisis
Military lapel ribbon for pioneering aircraft
Military lapel ribbon for the Falklands War
Military lapel ribbon for the French-Indochina War
Military lapel ribbon for the Golden Age of Flight
Military lapel ribbon for the 1991 Gulf War
Military lapel ribbon for the Indo-Pak Wars
Military lapel ribbon for the Iran-Iraq War
Military lapel ribbon for the Korean War
Military lapel ribbon for the 1982 Lebanon War
Military lapel ribbon for the Malayan Emergency
Military lapel ribbon representing modern aircraft
Military lapel ribbon for the attack on Pearl Harbor
Military lapel ribbon for the Six Day War
Military lapel ribbon for the Soviet-Afghan War
Military lapel ribbon for the Spanish Civil War
Military lapel ribbon for the Suez Crisis
Military lapel ribbon for the Vietnam War
Military lapel ribbon for Warsaw Pact of the Cold War-era
Military lapel ribbon for the WASP (WW2)
Military lapel ribbon for the World War 1
Military lapel ribbon for the World War 2
Military lapel ribbon for the Yom Kippur War
Military lapel ribbon for experimental x-plane aircraft
* Ribbons not necessarily indicative of actual historical campaign ribbons. Ribbons are clickable to their respective campaigns/operations.