Walter Cunningham, a civilian astronaut whose only mission in space, aboard Apollo 7, revived NASA’s quest to put men on the moon following a landing-pad fire that killed three astronauts, died on Tuesday in Houston. He was 90.
His death was announced by NASA.
Mr. Cunningham, a physicist and a former Marine pilot, joined Captain Walter M. Schirra Jr. of the Navy and Major Donn F. Eisele of the Air Force on a virtually flawless 11-day mission in October 1968. They completed 163 orbits of the Earth (4.5 million miles) in a reconstructed space capsule with many safety modifications and became the first NASA astronauts to appear on television from space.
The flight — the first manned Apollo mission — buoyed an America shocked by the capsule fire that took the lives of Virgil I. Grissom, Roger B. Chaffee, and Edward H. White II as they rehearsed for an envisioned Apollo 1 mission at Cape Kennedy, Fla., in January 1967.
“We carried the nation’s hope with us,” Mr. Cunningham wrote in his memoir, “The All-American Boys” (1977). “Twenty-one months before, a fire on the very pad from which we launched had killed three of our teammates. One more setback now, and the prospects of landing a man on the moon before 1970 would be gone forever.”
“The task wasn’t only technical,” he added. “We also had to address any psychological barriers that still remained.”
Mr. Cunningham, a lean figure with a brush cut, seemed to fit the astronaut archetype. But unlike many of the other early astronauts, he had never been a test pilot. His selection by NASA reflected the agency’s increasing interest in recruiting astronauts with scientific expertise.
He was the second civilian in space, after Neil Armstrong, who had flown in the Gemini program and later became the first man to walk on the moon.
Mr. Cunningham monitored the Apollo 7 flight systems, alongside Schirra, the command pilot, and Eisele, the navigator.
Apollo 7 — which blasted off on Oct. 11, 1968, following unmanned Apollo flights following the disastrous fire — passed its maneuverability and reliability tests. The capsule rendezvoused with an orbiting stage of the Saturn 1-B rocket that had sent it into space, indicating that it would have no trouble docking with a lunar module that would carry two astronauts from the capsule to the moon and back. The Apollo 7 astronauts, who made up NASA’s first three-man crew, also successfully tested an engine in the rear of their capsule designed to put the spacecraft into and out of lunar orbit on a future mission.
And for the first time, astronauts carried a camera providing TV images. They demonstrated how they could float in their weightless environment in what became known as “The Wally, Walt, and Donn Show,” and they put together a hand-lettered sign that said, “Hello From the Lovely Apollo Room, High Atop Everything.”
There was a problem, though: Schirra had a heavy head cold, Eisele had a lesser cold, and Mr. Cunningham, as he would later recall, felt “a little blah.” NASA feared that the colds could result in the bursting of eardrums as the astronauts returned to Earth.
They were, in fact, just fine when they splashed down some 325 miles south of Bermuda, less than a mile off target. Their mission was so successful that Apollo 8 orbited the moon, another important prelude to the moon landing in July 1969.
But Apollo 7 had its blemishes. It would be remembered for Schirra’s disputes with NASA controllers in Houston. Speaking on an open microphone monitored by the press, he protested the agency’s ambitious schedule for TV transmissions, which he felt took valuable time away from the astronauts’ work. He also insisted that the astronauts dispense with the rule requiring pressurized helmets on reentry, fearing this could damage their eardrums in light of their colds. He got his way.
Schirra, who flew in the Mercury and Gemini programs, had told NASA he planned to retire after Apollo 7. That mission proved to be not just the first but also the last for both Mr. Cunningham and Eisele.
“I never figured out why Schirra had such a burr under his saddle,” Gene Kranz, one of the flight directors for Apollo 7, wrote in his memoir, “Failure Is Not an Option” (2000). “Perhaps he just could not deal with the irritation of having something so piddling as a cold invade the trip of a lifetime. In any case, the careers of the two younger astronauts suffered. Neither Cunningham nor Eisele flew in space again.”
Chris Kraft, the director of flight operations for the Apollo program, wrote in his memoir, “Flight: My Life in Mission Control” (2001), that Mr. Cunningham and Eisele had supported Schirra on the helmet issue. Kraft said he regarded their collective stance as “insubordinate” and recalled telling Donald Slayton, who selected crews for the Apollo missions, that “this crew shouldn’t fly again.”
Kraft wrote that Mr. Cunningham later told him “he was in a tough position up there with a headstrong and angry commander,” and recalled holding out the possibility that Mr. Cunningham might indeed fly once more. But he never did.
In his memoir, Mr. Cunningham wrote that Schirra had viewed each encounter with the ground controllers as “a challenge to his authority and judgment as captain of the ship,” and that “I did not feel justified in the behavior and abuse that was being heaped on the ground.”
Ronnie Walter Cunningham was born on March 16, 1932, in Creston, Iowa, the eldest of five children. His father, Walter, had a small construction business. When he was young, his family moved to Venice, Calif.
He entered the Navy in 1951 and flew Marine Corps jets. After leaving active service in 1956, he received a bachelor’s degree and a master’s in physics from the University of California Los Angeles. While at the RAND Institute in October 1963, pursuing doctorate-level studies, he was named to NASA’s third group of astronauts.
Soon after Apollo 7, Mr. Cunningham was named director of what became known as the Skylab program, which developed America’s first space station. Astronaut Pete Conrad succeeded him in 1970. Mr. Cunningham resigned from NASA the next year after failing to get an assignment to fly in Skylab’s forthcoming missions.
He later became a senior executive at financial and real estate companies. In 2012, he joined with a group of former astronauts and NASA employees who sent a letter to the agency criticizing what they thought were its unproven assertions that human-made carbon dioxide was a major factor in global warming.
He leaves his wife, Dorothy. Complete information on survivors was not immediately available.
Reflecting on his NASA experience, Mr. Cunningham said it gave him confidence to master whatever challenges lay ahead.
“I consider it a spectacle I took part in,” he told The New York Times in 1972, when he was managing a $1 billion real estate complex in Houston. “I came away thinking there wasn’t anything I couldn’t handle.”
“I am a physicist, and everything I encountered in the flight can be explained,” he said when asked whether he saw anything in space that had changed him. “It did not change my view of religion, life, Earth. It had no revelations.”