Throughout the one and a half months after the start of ground tests, HB1001, the first of two demonstrators, underwent tests in preparations for the first flight. F-117 Nighthawk is the first operational aircraft specifically designed around stealth technology. Based on the Have Blue demonstrators, Senior Trend aircraft were different from their predecessors in several aspects. I said "Well, it's simple, you just make it out of flat surfaces, and tilt those flat surfaces over, sweeping the edges away from the radar view angle, and that way you basically cause the energy to reflect away from the radar. Engineers later encountered the same difficulty fabricating the prototype on the factory floor." Rich won the argument with Johnson, a rare occurrence. As of 2019, he is the vice president, chief operating officer, and test pilot instructor at the National Test Pilot School located in Mojave, California. A hydraulic leak caused an engine fire, resulting in the loss of hydraulic pressure, which in turn caused severe pitch oscillations. The Lockheed Have Blue was born out of a requirement to evade radar detection. 32–33. Hebben Blue is ontworpen door Lockheed Skunk Works divisie, en getest in Groom Lake, Nevada.De Have Blue was de eerste fixed-wing vliegtuigen waarvan de uitwendige vorm werd bepaald door radar techniek in plaats van door de lucht- en … -AG4 and STOVL down opens bomb bay. We gebruiken cookies en vergelijkbare tools om uw winkelervaring te verbeteren, onze services aan te bieden, te begrijpen hoe klanten onze services gebruiken zodat we verbeteringen kunnen aanbrengen, en om advertenties weer te geven. It was operated by both the United States Air Force (USAF) and NASA. [22][23] The aircraft's gross weight of 9,200–12,500 lb (4,173–5,669 kg) enabled the aircraft to use the landing gear from the Northrop F-5 fighter. Engineers later encountered the same difficulty fabricating the prototype on the factory floor." [15] Northrop's and Lockheed's designs were generally similar, though the former's submission featured more angular and flat surfaces. The Lockheed Have Blue was a proof of concept aircraft for stealth. If you are on Mac, copy this airplane ID to the clipboard and press CMD+L while in the designer in SimplePlanes to download this airplane. Have Blue was the forerunner to the classic Lockheed F-117 "Nighthawk", the so-called stealth fighter that was actually a bomber. [33] Additionally, provisions were made to include two weapons bays, each of which would accommodate a single 2,000-pound (910 kg) laser-guided bomb, or the B61 tactical nuclear bomb. He would fly the next four sorties, all chased by a T-38 piloted by Major (later Lieutenant Colonel) Ken Dyson. [22] He made his first flight on HB1001 on 17 January 1978, chased by Park. In the 1970s, it became increasingly apparent to U.S. planners that, in a military confrontation with Warsaw Pact forces, NATO aircraft would quickly suffer heavy losses. He would fly the next four sorties, all chased by a T-38 piloted by Major (later Lieutenant Colonel) Ken Dyson. This came as a result of sophisticated Soviet defense networks, which used surveillance radars, radar-guided surface-to-air missiles (SAM), and anti-aircraft artillery to seek and eliminate enemy aircraft. [6], In the summer of 1975, DARPA informally invited Lockheed, Northrop and McDonnell Douglas to develop an aircraft under the name "Experimental Survival Testbed" (XST). Aronstein and Piccirillo 1997, pp. Glad you like it! The agency would later initiate the Battlefield Surveillance Aircraft, Experimental (BSAX), which evolved into the Tacit Blue and, ultimately, the B-2 bomber. It lead to “Senior Prom” then to the famous F-117 Nighthawk. To build the demonstrators, Ben Rich had to raise $10.4 million from the Lockheed management, which was secured by June. [36], HB1002 was lost on 11 July 1979 during the aircraft's 52nd flight. The aircraft was destroyed on impact in the vicinity of the Groom Lake facility. Press Esc to cancel. Nevertheless, Have Blue was deemed a success, paving the way for the first operational stealth aircraft, Senior Trend, or F-117 Nighthawk. A stealth engineer at Lockheed, Denys Overholser, had read the publication and realized that Ufimtsev had created the mathematical theory and tools to do finite analysis of radar reflection. However, both prototypes were lost due to mechanical problems. The first was about the signature thresholds at which an aircraft is virtually undetectable. Its name was taken from the moonshine factory in the comic strip Li'l Abner. The pilot ejected safely, and the aircraft was destroyed. Have Blue was the code-name for Lockheed's "proof of concept" (i.e. In early November, two semi-trailers were parked parallel to each other outside Building 82; a camouflage net was thrown over the top to cover the demonstrator during outdoor engine runs. The second point was whether these companies had the capacity to design and manufacture such an aircraft. the Download for Mobile button below. [7], In May 1975, the Skunk Works produced an internal report titled, "Progress Report No. The Lockheed SR-71 "Blackbird" is a long-range, high-altitude, Mach 3+ strategic reconnaissance aircraft developed and manufactured by the American aerospace company Lockheed Corporation. The remaining two were later joined by Lockheed. 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. It had highly-swept wings and inward-canted vertical stabilizers, which led to its being nicknamed "the Hopeless diamond" - a pun on the "Hope diamond." [8], During the next few weeks, the team created a computer program which could evaluate the RCS of possible designs. The RCS-prediction software was called "ECHO 1". Lockheed Have Blue was the code name for Lockheed's proof of concept demonstrator that preceded the production Lockheed F-117A Nighthawk stealth bomber. [5] Rich and Martin formally requested DARPA for the company to participate in the program, but the agency initially refused because there were insufficient funds; after much debate, Lockheed was allowed entry, albeit without a government contract. In order to reach the flight test stage, Lockheed's Have Blue design won out against Northrop's concept under the XST program, which you can … As a result, a quadruple redundant fly-by-wire (FBW) flight control system was integrated into the aircraft to give it normal flying characteristics. The first was about the signature thresholds at which an aircraft is virtually undetectable. The Lockheed/Boeing/General Dynamics YF-22 is an American single-seat, twin-engine fighter aircraft technology demonstrator designed for the United States Air Force (USAF).
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