During the Cold War aircraft carriers had a secondary mission of nuclear warfare and its attack aircraft were nuclear-capable. However, it was policy to neither confirm nor deny the presence of nuclear weapons aboard any naval vessel. Pres. George H.W. Bush cancelled the nuclear mission for all naval forces except SSBN submarines. Today there are no nuclear weapons and no nuclear-capable aircraft on our carriers.
The B-36 was a long range combat aircraft. It had the largest wingspan of any combat aircraft. It was solely operated by the United States Air force. It was capable of delivering and bombing nuclear warheads.
A spacecraft is any man made object capable of reaching space. An aircraft is any man made object capable of flight.
Aircraft built by the military to refuel other capable aircraft (other military craft basically) in midair.
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There are currently no aircraft capable of flying mach 5. The fastest ever flown was mach 3.1 by the SR-71 Blackbird.
The U.S.S. Enterprise, CVN-65, was the first nuclear powered aircraft carrier. A link is provided.
Same as nuclear gravity bombs dropped by bomber aircraft.
Enterprise
They made aircraft because nuclear submarines had not yet been invented.
Two nuclear-powered aircraft have been tested, but none have been placed in series production or service. The two aircraft are now out of service. They used to belong to the United States and the USSR.
Most records about Nuclear Powered aircraft are classified, just like the Nuclear Submarines. The United States has only published one record of a Nuclear Powered aircraft. The program was cancelled in 1958, due to complications.