HOW MANY ENGINES DID THE b36 HAVE

Quick Answer

The Convair B-36 Peacemaker had 10 engines in total : six large piston (radial) engines plus four turbojet engines.

Engine Breakdown

6 Piston Engines (Primary Power)

• Type: Pratt & Whitney R-4360-53 Wasp Major radial engines

• Configuration: Mounted in a rare pusher configuration (propellers at the rear of the engine nacelles, pushing the aircraft forward)

• Power per engine: Approximately 3,800 horsepower (2,834 kW) each

• These six engines were the primary source of propulsion for the B-36, especially during cruise flight.

4 Jet Engines (Augmented Thrust)

• Type: General Electric J47-GE-19 turbojet engines

• Placement: Mounted in pods under the wings, outside the piston engine nacelles

• Thrust per engine: About 5,200 lbf (23.1 kN) each

• These four jets were added to B-36B and all later models to provide extra thrust during takeoff, climb, and high-speed dashes.

The Famous Phrase: “Six Turning, Four Burning”

This unique ten-engine setup gave rise to the well-known aviation phrase:

“Six turning, four burning”

• Refers to the six piston engines turning their propellers and the four jet engines burning fuel for added power.

• The B-36 is one of the very few aircraft ever to combine piston and jet propulsion in operational service.

• With all ten engines running, the loss of one or even two engines in flight was often manageable—though engine reliability was still a notorious challenge.

Why So Many Engines?

Several factors drove this unusual design:

• Intercontinental range requirement: The B-36 was designed during World War II to potentially bomb Nazi-occupied Europe from bases in North America, requiring extremely long range (up to ~10,000 miles).

• Massive airframe: It was the largest piston-powered combat aircraft ever built, with a 230-foot wingspan and huge weight, demanding enormous power.

• Transitional technology: The B-36 was conceived in the piston era but entered service as jet technology matured, so jets were added to keep performance viable against emerging jet fighters.

Service Snapshot

• In service: 1946–1959

• Total produced: 384–385 aircraft

• Crew: 15–22 personnel

• Max speed: Around 435 mph with all ten engines; cruise about 230 mph on pistons alone.

TL;DR

• Total engines: 10
• Breakdown: 6 × Pratt & Whitney R-4360 radial piston engines + 4 × General Electric J47 turbojets

• Nickname: “Six turning, four burning”

Information gathered from public forums or data available on the internet and portrayed here.