Tag Archives: CIM-10 Bomarc

10 September 1952

An XF-99 BOMARC surface-to-air missile for booster research. Note that there are no wing-mounted ramjet engines on this prototype, photographed 1 September 1952. (U.S. Air Force)
Boeing XF-99 Bomarc launch. (U.S. Air Force)

10 September 1952: The Boeing Michigan Aeronautical Research Center (BOMARC) XF-99 surface-to-air antiaircraft guided missile made its first flight when launched from the Cape Canaveral Air Force Station on the east coast of Florida. This flight  was a test of the missile’s liquid-fueled Aerojet General booster engine.

The surface-to-air missile was developed as a defense against Soviet intercontinental nuclear-armed bombers, such as the Tupolev Tu-4 and Tu-16. At the time, the missile was considered to be an unmanned aircraft and was given a fighter designation, F-99, later redesignated IM-99, then CIM-10.

Tupolev Tu-16 long range strategic bomber.

After launch, the Bomarc would be guided toward its target by the North American Air Defense Command (NORAD) Semi-Automatic Ground Environment (SAGE) system. Once with 10 miles (16 kilometers) of the target, the missile would home in using its own radar. The warhead would be detonated by a proximity fuse.

The operational Bomarc missile was armed with a W-40 nuclear warhead. The W-40 was a boosted fission implosion device which had been developed as the primary for the Mk-28 thermonuclear bomb. It was 1 foot, 5.9 inches (0.455 meters) in diameter, 2 feet, 7.64 inches (0.804 meters) long, and weighed 385 pounds (175 kilograms). The warhead had a yield of 10 kilotons. Its effective radius was approximately 0.6 mile (1 kilometer).

The Bomarc A was 46 feet, 10 inches (14.2748 meters) long, with a diameter of 2 feet, 11, inches 9 meters). It had a wingspan of 18 feet, 2 inches (5.5372 meters), and height of 10 feet, 4 inches (3.1496 meters), It weighed 15,619 pounds (7,085 kilograms).

The Bomarc A first stage was powered by a liquid-fueled Aerojet General LR59-AG-13 engine, producing 35,875 pounds of thrust (159.6 kilonewtons). The second stage was driven by two Marquardt RJ43-MA-7 ramjet engines, of 11,500 pounds of thrust, each (51.15 kilonewtons).

Launch of a Bomarc surface-to-air missile. (U.S. Air Force)

Because the hypergolic liquid fuel of the Bomarc A was highly corrosive and dangerous to handle, the missile could not be fueled until just before launch, which required approximately two minutes. This significantly reduced the time available to intercept enemy bombers. To eliminate the delay, the Bomarc B used a Thiokol XM-51 solid fuel rocket engine, which increased the first stage thrust to 50,000 pounds (222.4 kilonewtons).

While the Bomarc A used vacuum tubes in its electronic circuitry, the Bomarc B was solid state. Its intercept pulse doppler radar was produced by Westinghouse.

Original variants of the Bomarc could reach a speed of 1,975 miles per hour (3,658 kilometers per hour), had a range of 260 statute miles (418 kilometers), and could reach an altitude of 65,000 feet (19,812 meters). The Bomarc B had a range of 440 miles (708 kilometers) and could reach 100,000 feet (30,480 meters). Slightly heavier, it weighed 16,032 pounds (7,272 kilograms. During testing, the missile could reach Mach 4.

The Bomarc was in operational service from 1959 until 1970. As originally planned, the Bomarc would be based at 52 sites within the United States and Canada, with 120 missiles each, but in actuality, there were only eight sites in the U.S. and two in Canada. Boeing produce 260 Bomarc As, and 570 Bomarc Bs.

Bomarc surface-to-air missiles at Maguire Air Force Base, southeast of Trenton, New Jersey. (U.S. Air Force 090603-F-1234P-002)
Bomarc surface-to-air missiles at Maguire Air Force Base, southeast of Trenton, New Jersey. (U.S. Air Force 090603-F-1234P-002)

© 2023, Bryan R. Swopes

31 August 1955

Lockheed NF-94B (All The World’s Aircraft)

31 August 1955: At 7:42 a.m., Lockheed engineering test pilot Stanley Alexander Beltz departed Air Force Plant 42, at Palmdale, in the high desert of southern California, to perform a series of stall tests of a highly-modified NF-94B interceptor. The test program required three stalls in a “clean” configuration, and three “dirty”: with the landing gear extended and flaps lowered.

The clean stall tests went well. Then, at an altitude of 10,000 feet (3,048 meters), Beltz lowered the landing gear and flaps. Pushing the right rudder pedal put the airplane into a stall. Beltz made a radio call, “Here she goes!”

The Los Angeles Times reported:

Lockheed Test Pilot Dies in Crash of Jet

     Stanley A. Beltz, 44, Lockheed engineering test pilot, was killed yesterday when his F-94B jet crashed into open desert northeast of Lancaster after the plane narrowly missed homes in the area.

     Beltz was acclaimed a hero by residents who said he might have jumped, but apparently elected to stay with his disabled plane until he had safely cleared houses in the sparsely settled mile-long district between the Lancaster Fairgrounds and the scene of the crash.

     The veteran flier died in the flaming wreckage of his two-place interceptor which had been modified for special Air Force test work, probably launching studies on air-to-air missiles.

     Beltz took off from Palmdale at 7:42 a.m. and the jet smashed to earth just 15 minutes later. The pilot rode the ship to his death without triggering his ejection seat for an emergency parachute jump.

Cause Not Determined

“Stanley A. Beltz, 44, test pilot, died yesterday in jet crash.” (Los Angeles Times)

     Cause of the crash could not be determined immediately, although it is believed the Lockheed pilot was being followed by a chase plane at the time.

     There was no disclosure as to the altitude of the F-94B when the emergency occurred nor any of the radio transmissions Beltz may have made before the crash.

     A Lockheed pilot since 1943, Beltz had flown almost every type of ship produced by the company since that time with the exception of the F-90, the F-104 and the vertical riser.

     He was known particularly for his testing of multiengine aircraft built by Lockheed, including the double-deck Constitution, the P2V Navy patrol bomber and the C-130 military turbo-prop transport.

Former Instructor

     Before he joined the Burbank company he was a wartime flight instructor at War Eagle Field, Lancaster, and instrument flight instructor with Western Air Lines and a test pilot for the Glenn L. Martin Co. at Omaha.

     He leaves a sister, Mrs. Victor Sabo of North Hollywood, and a brother, Dr. Daniel Beltz, of Inglewood. His former wife, Mrs. Josephine Beltz, lives in Hollywood.

     The test pilot made his home at 1603 Ave. Q6, Palmdale.

Los Angeles Times, Vol. LXXIV, Thursday, 1 September 1955, Part 2, Page 1 at  Column 5

Bomarc A

Beltz’s aircraft was a modified Lockheed F-94B interceptor, serial number 51-5502. It carried the nose cone,  radar and guidance systems of the F-99 BOMARC, ¹ a nuclear-armed surface-to-air antiaircraft guided missile. The test airplane  was redesignated NF-94B.

Stanley Alexander Beltz was born at LaCrosse, Kansas, 7 May 1911. He was the tenth child of Alexander Beltz, a farmer and immigrant from Russia, and Eva Katherine Simon Beltz, a German immigrant. He had blond hair and blue eyes, was 5 feet, 7 inches (170 centimeters) tall and weighed 175 pounds (79.4 kilograms). In 1935, he worked as a truck driver for Rocky Mountain Lines, Inc. He married Josephine Charlotte Whitney in Kansas, 8 June 1935. They would later divorce.

Josephine and Stanley A. Beltz (sonyachinn/ancestry.com)

In 1936, Beltz went to work at the Lockheed Aircraft Company as a sheet metal fabricator on the company’s twin engine Model 10 Electra. He then learned to fly. Early in World War II, he flew as a civilian flight flight instructor, training military pilots. He was hired as a test pilot for the Glenn L. Martin Co., flying the B-26 Marauder medium bomber. He later returned to Lockheed as a production test pilot. He flew the twin-engine P-38 Lightning.

Stanley A. Beltz with Lockheed P-38L Lightning. (Lockheed Martin)

In 1945, Beltz was promoted to engineering test pilot. He flew the four-engine Constellation airliner, the RV-2 Constitution transport,  and all variants of the PV-2 Neptune patrol bomber. He had flown every Lockheed aircraft except the XF-90, the XFV-1 experimental VTOL, and the F-104 Starfighter. On 23 August 1954, he made the first flight of the turboprop-powered YC-130 Hercules transport. He said, “She’s a real flying machine. I could land it crossways on the runway if I had to.”

The first prototype Lockheed YC-130 Hercules takes of from the Lockheed Air terminal, Burbank, California, 23 August 1954. (Lockheed Martin)

Bletz was a member of The Anciente and Secret Order of Quiet Birdmen, a fraternal organization of pilots.

Funeral services for Stanley Alexander Beltz were held at Steen’s Chapel, North Hollywood, Tuesday, 6 September 1955, at 10:30 a.m. His remains are interred Glen Haven Memorial Park, Sylmar, California.

(Find a Grave)

Beltz’s girlfriend, Mrs. Phyllis Ann Fratt, a ranching heiress, committed suicide ten days after his death. She had written:

Phyllis Ann Fratt (Arizona Republic)

. . . I was never anything until I fell in love with him. He was a great man. I loved and respected him with all my being and soul. There are one million things locked in my heart that tell how wonderful he was. We had so many beautiful things together. I can’t go on without him.

. . . and. . .

There’s nothing left of me—just an empty shell. My life, love, soul and being went with Stan.

—Phyllis Ann Fratt, 10 September 1955

¹ Boeing Michigan Aeronautical Research Center

© 2022, Bryan R. Swopes