tests. Although work would continue for another three years, Groom Lake had been transformed from a ram-shackle collection of hangars and trailers in the desert into a permanent, state-of-the-art flight test center.
At this same time, the radar test program on the A-ll mock-up had been under way. By the time the work was completed in mid-1961, it was found that most of the radar return came from the vertical stabilizers, the engine inlet, and the forward sides of the nacelles. The edges of the chines and wings, as well as the vertical stabilizers, were made of a radar-absorbing laminated plastic. Of course, this plastic also had to withstand the 500 -plus-degree F heat. This was the first time plastic had been used as a structural material. Because of the design changes from the radar tests, the aircraft was renamed the 'A-12.'[133]
Groom Lake was also used for low-speed tests of the A-12's ejector seat.
It would have to work from standing still on the runway up to a speed of over Mach 3 at 100,000 feet. Johnson was never convinced that a capsule ejection system, such as that on the B-58 or XB-70, was needed. The pilot would be wearing a pressure suit, which would provide protection from wind blast and heat. Instead, a modified F-104 seat would be used. The system was tested by towing a fuselage mock-up across the lake bed behind a car.[134] Later, in-flight ejection tests were done using a two-seat F-104.
Groom Lake had also, by this time, received a new official name. The nuclear test site was divided into several numbered areas. To blend in, Groom Lake became 'Area 51.' (Its unofficial name remained the Ranch through the 1960s.)
The first A-12 was originally scheduled to be ready in May 1961. Due to problems with wing assembly and J58 engine development, this date was pushed back to August 30, then December 1. Bissell was very upset by the delays: 'I trust this is the last of such disappointments short of a severe earthquake in Burbank,' he commented.
It was not to be — on September 11, 1961, Pratt and Whitney notified Lockheed of continuing problems with the J58's weight, performance, and delivery schedule. The completion date had slipped to December 22, 1961, with the first flight set for February 27, 1962. Because the J58 would not be ready, it was decided to temporarily install J75 engines (used in the F-105, F-106, and U-2C.) This would allow flight tests up to a speed of Mach 1.6 and 50,000 feet. With this, the A-12 program began to pick up momentum.
But there would be more problems.
As flight testing neared, activities at Groom Lake also increased. In late 1961, Col. Robert J. Holbury was named Area 51 commander. A CIA officer was his deputy. Support aircraft began arriving in the spring of 1962.
This consisted of an F-104 chase plane, eight F-100s for training, two T-33s for proficiency flights, a helicopter for search and rescue, a C-130 for cargo, and a Cessna 180 and U-3A for liaison use.
At Burbank, the first A-12, Article 121, was undergoing final checkout and tests. Once this was finished, the aircraft's wings were removed and the fuselage was loaded into a boxlike trailer, which hid its shape. Article 121
left Burbank at 3:00 A.M. on February 26, 1962. The route from Burbank to Groom Lake had already been surveyed, and it was found that an object 105
feet long and 35 feet wide could be moved with only a few road signs having to be removed, trees trimmed, and roadsides leveled to provide clearance. By sunrise, the convoy was out on the desert and away from prying eyes. After arrival, work began on reassembling Article 121 and installing the J75 engines. There was a final delay — the sealing compound had failed to stick to the fuel tank's interior. It was necessary to strip the tanks and reline them.
Finally, the A-12 was ready to test its wings. Lockheed test pilot Louis W. Schalk was selected to make the first flight. In preparation, he made several flights in a modified F-100. With the center of gravity aft, it matched the A-12's expected handling characteristics. The first tests in Article 121 were engine runs and low- and medium- speed taxi runs. The prototype A-12 was unpainted and unmarked, with no national insignia, no 'U.S. Air Force,' no civilian N-number, not even an article number.
All was ready by April 24, 1962, for a high-speed taxi test. Schalk would momentarily lift the plane off the runway. For this test, the A-12's stability augmentation system (SAS) was left disconnected. Because of its design, the A-12 was inherently unstable under some flight conditions, and the SAS was necessary to keep the plane under control. The SAS was triple redundant in yaw and pitch and double redundant in roll.[135]
All went well with the taxi test until the A-12 lifted off. As it did, the plane wallowed into the air, the wings rocking from side to side, and the nose high.[136] Schalk recalled later, 'I really didn't think I was going to be able to put the aircraft back on the ground safely.' Finally, he was able to regain control and cut the throttles. By this point, the A-12 had flown past the end of the runway. As it touched down on the lake bed, the wheels kicked up a huge cloud of dust, hiding the aircraft. The Groom Lake tower asked what was happening. Schalk radioed an answer, but the antenna was on the plane's underside and he could not be heard. Once the A-12 slowed, Schalk turned and the aircraft emerged from the dust cloud. Everyone breathed a sigh of relief. There was no damage from the near mishap. Schalk judged the A-12 was ready for flight, but added that the SAS should be turned on.[137]
The first A-12 flight was made on April 26. The plane remained aloft for some forty minutes, with the landing gear left down to avoid any retraction problems. Schalk switched off each of the SAS dampers, one by one. The plane remained stable, and he turned them back on and landed.
The official first flight was made four days later, on April 30. As the plane's landing gear retracted and it accelerated, several fuselage and wing fillet panels began falling off. There were no handling problems, and the plane reached 30,000 feet, a speed of 340 knots, and remained aloft for 59 minutes. The loss of the skin panels was solved by filling the cavities with steel wool. The repairs were completed and, on May 4, the A-12 reached Mach 1.1.[138]
After nearly a year's delay, the A-12 had embarked on its flight into the unknown. The new CIA director, John McCone, sent a telegram of con-gratulations to Johnson.[139] With the first flights completed, the test program now began expanding. Schalk made the first thirteen flights. In late 1962, three more Lockheed test pilots joined the program — William C. Park, Robert Gilliland, and James D. Eastham. The early flights tested aircraft systems, the inertial navigation system, and midair refueling. This was done using KC-135Q tankers of the 903d Air Refuelling Squadron. A maximum altitude of 60,000 feet was also reached by the end of 1962.
Because the J58 engines were not yet installed, little could be done in the way of high-speed flight testing. The CIA pressed Lockheed to make a Mach 2 flight, arguing that if the J75-powered F-106 could reach Mach 2, the A-12 should be able to do the same. Finally, Park put an A-12 into a dive and reached Mach 2.16. The flight proved little. Since the inlet-nacelle design was mismatched with the J75 engines, a 'duct shutter' resulted— a vibration caused by airflow within the inlet as the plane neared Mach 2.[140]
As flight testing continued, more A-12s were being delivered to Groom Lake. By August 1962, Article 122 and Article 123 had arrived. Article 124, the A-12T two-seat trainer was moved to Groom Lake in November, and Article 125 arrived on December 17, 1962.
The Oxcart program received a boost during the summer of 1962 when CIA U-2s discovered the deployment of SA-2 SAMs in Cuba. CIA Director McCone asked if the A-12 could take over the Cuban overflights. The A-12 was still at too early a point in the flight-test program to consider such a mission. Following the Cuban Missile Crisis in October, bringing the A-12 to operational status became one of the highest national priorities.
Despite the added A-12s now available, the test program was still handi-capped by the delay of the J58 engines. CIA Director McCone decided this was unacceptable. He wrote to the president of United Aircraft on December 3, 1962: 'I have been advised that J58 engine deliveries have been delayed again due to engine control production problems… By the end of the year it appears we will have barely enough J58 engines to support the flight test program adequately… Furthermore, due to various engine difficulties we have not yet reached design speed and altitude. Engine thrust and fuel consumption deficiencies at present prevent sustained flight at design conditions which is so necessary to complete developments.'[141]
The first J58 finally was delivered to Groom Lake and installed in Article 121. The first problem was getting it
