Military Factory logo
Icon of F-15 Eagle military combat fighter aircraft
Icon of Abrams Main Battle Tank
Icon of AK-47 assault rifle
Icon of navy warships
Icon of a dollar sign
Icon of military officer saluting
National Flag Graphic


Jet-Powered Medium Bomber Prototype


The CONVAIR XB-46 Medium Bomber was an American response to the arrival - and success - of the German wartime Arado Ar 234 Blitz jet-powered bomber.

Detailing the development and operational history of the CONVAIR XB-46 Jet-Powered Medium Bomber Prototype.  Entry last updated on 11/2/2017. Authored by Staff Writer. Content ©
American authorities were not blind to the advances in military combat aircraft being made by the Germans during World War 2- particularly in their operational use of the Arado Ar 234 "Blitz" jet-powered bomber. The system, introduced during September of 1944, was fast enough to out-fly ground-based defenses as well as airborne interceptors and was used in both the traditional bomber role as well as fast reconnaissance. 210 of the type were produced before war's end but not nearly enough to make an impact on Germany's worsening fortunes during the conflict.

With that said, there was born an initiative on the part of the United States Army Air Forces (USAAF) to provide an all-modern, high-flying jet-powered medium bomber capable of reaching out to 1,000 miles and carrying a considerable war load. This prompted responses from the usual industry players of which Boeing, CONVAIR, Martin and North American proved the most notable. Respectively, the designs became XB-47, XB-46 (CONVAIR "Model 109"), XB-48, and XB-45 with only the XB-45 seeing serial production as the B-45 "Tornado" and XB-47 outshining them all as the production-minded B-47 "Stratojet".

In January of 1945, as World War 2 still raged in Europe and the Pacific, a mockup by CONVAIR was approved and a contract order for three prototypes followed in February. At the same time, the company was furthering another attack platform - the XA-44 (becoming the "XB-53" some time later) - and this played poorly into USAAF plans as its post-war defense budget was reeled in during the worldwide military drawdown that followed the surrender of Japan in August (1945). While the advanced, forward-swept-wing XA-44 was favored over the XB-46, both were allowed to continue along their respective development paths albeit through some revision of both product lines between CONVAIR and the USAAF: funding of two of the proposed XB-46 prototypes now became funding for two XA-44 prototypes. The USAAF ultimately rebranded in 1947 to become the United States Air Force (USAF).

The XB-46 held a conventional design arrangement as bombers of the period went. The nose section held the bombardier behind a plexiglass nosecone and the flight crew - pilot and copilot seated in tandem - were under a single-piece teardrop-style canopy with little framing used to provide excellent vision out-of-the-cockpit. The wing mainplanes were set at midships and were straight, high-mounted appendages each featuring an underslung engine nacelle. The fuselage was of an elegant design form and made extremely aerodynamically refined which served the speeds involved rather nicely. The empennage was capped by a single vertical tail fin and low-mounted horizontal planes. A tricycle undercarriage complete the look of this most modern bomber airplane.

Power was to come from 4 x Allison J35-A-3 turbojet engines developing 4,000lb of thrust each and in the assumed B-46 production forms, this was to be supplanted by 4 x General Electric J47 turbojets of 5,200lb thrust each for improved performance.

Internally, the aircraft was slated to carry a war load of up to 22,000lb in the way of conventional drop ordnance. There were also plans to introduce a twin-gunned "stinger" emplacement at the tail showcasing 2 x 0.50 caliber heavy machine guns through a powered Emerson Electric Company turret sporting an APG-27 remote-controlled sighting system.

As finalized, the XB-46 held a maximum speed of 545 miles per hour, a cruising speed near 440 miles per hour, a range out to 2,870 miles and a service ceiling up to 40,000 feet.

First flight for the XB-46 occurred on April 2nd, 1947 and initial results were largely positive though not without issue. Tests continued into September of that year with 64 flights being recorded though, in August, the USAF had terminated its interest in the CONVAIR product as the Boeing XB-47 had progressed to its expectations. The XA-44 / XB-53 product followed in cancellation, this during 1949, and the arrival of the B-47 also affected production totals of the competing XB-45 / B-45.

On the whole, the XB-46 proved a sound bomber design and only the sole flyable prototype XB-46 was ever completed. Its airframe was eventually scrapped over the years but it continued in testing various components under the USAF banner into late 1950.


YEAR: 1947
STATUS: Cancelled
LENGTH: 105.81 ft (32.25 m)
WIDTH: 113.02 ft (34.45 m)
HEIGHT: 27.89 ft (8.5 m)
EMPTY WEIGHT: 48,116 lb (21,825 kg)
MTOW: 95,802 lb (43,455 kg)
POWER: 4 x Allison J35-A-3 turbojet engines developing 4,000lb of thrust each.
SPEED: 544 mph (875 kph; 472 kts)
CEILING: 40,026 feet (12,200 m; 7.58 miles)
RANGE: 2,871 miles (4,620 km; 2,495 nm)
RATE-OF-CLIMB: 1,845 ft/min (562 m/min)
OPERATORS: United States (cancelled)

2 x 0.50 caliber Heavy Machine Guns (HMGs) for local defense.

Up to 22,000lb of conventional drop stores.
Graphical image of an aircraft medium machine gun
Graphical image of an aircraft heavy machine gun
Graphical image of an aircraft conventional drop bomb munition
Variants / Models

• XB-46 - Base Series Designation; sole prototype completed.

Our Data Modules allow for quick visual reference when comparing a single entry against contemporary designs. Areas covered include general ratings, speed assessments, and relative ranges based on distances between major cities.

Image of collection of graph types

Relative Maximum Speed
Hi: 750mph
Lo: 375mph
This entry's maximum listed speed (544mph).

Graph average of 562.5 miles-per-hour.
City-to-City Ranges
Graph showcases the CONVAIR XB-46's operational range (on internal fuel) when compared to distances between major cities.
Aviation Era
Pie graph section
Pie graph section
Pie graph section
Pie graph section
Pie graph section
Useful in showcasing the era cross-over of particular aircraft/aerospace designs.
Unit Production (1)
Comm. Market HI*: 44,000 units
Military Market HI**: 36,183 units

  * Commercial Market High belongs to Cessna 172.

  ** Military Market High belongs to Ilyushin Il-2.

Altitude Visualization
Small airplane graphic
Supported Roles
Ground Attack
Aerial Tanker
A2A=Air-to-Air; UAV=Unmanned; CAS=Close Support; ASW=Anti-Submarine; AEW=Airborne Early Warning; MEDEVAC=Medical Evac; EW=Electronic Warfare; SAR=Search-Rescue
Commitments / Honors
Military lapel ribbon for Operation Allied Force
Military lapel ribbon for the Arab-Israeli War
Military lapel ribbon for the Battle of Britain
Military lapel ribbon for the Battle of Midway
Military lapel ribbon for the Berlin Airlift
Military lapel ribbon for the Chaco War
Military lapel ribbon for the Cold War
Military lapel ribbon for the Cuban Missile Crisis
Military lapel ribbon for pioneering aircraft
Military lapel ribbon for the Falklands War
Military lapel ribbon for the French-Indochina War
Military lapel ribbon for the Golden Age of Flight
Military lapel ribbon for the 1991 Gulf War
Military lapel ribbon for the Indo-Pak Wars
Military lapel ribbon for the Iran-Iraq War
Military lapel ribbon for the Korean War
Military lapel ribbon for the 1982 Lebanon War
Military lapel ribbon for the Malayan Emergency
Military lapel ribbon representing modern aircraft
Military lapel ribbon for the attack on Pearl Harbor
Military lapel ribbon for the Six Day War
Military lapel ribbon for the Soviet-Afghan War
Military lapel ribbon for the Spanish Civil War
Military lapel ribbon for the Suez Crisis
Military lapel ribbon for the Vietnam War
Military lapel ribbon for Warsaw Pact of the Cold War-era
Military lapel ribbon for the WASP (WW2)
Military lapel ribbon for the World War 1
Military lapel ribbon for the World War 2
Military lapel ribbon for the Yom Kippur War
Military lapel ribbon for experimental x-plane aircraft
* Ribbons not necessarily indicative of actual historical campaign ribbons. Ribbons are clickable to their respective campaigns/operations.

Site Disclaimer  |  Privacy Policy  |  Cookies  |  Site Map Site content ©2003-, All Rights Reserved.

The "Military Factory" name and logo are registered ® U.S. trademarks protected by all applicable domestic and international intellectual property laws. All written content, illustrations, and photography are unique to this website (unless where indicated) and not for reuse/reproduction in any form. Material presented throughout this website is for historical and entertainment value only and should not to be construed as usable for hardware restoration, maintenance, or general operation. We do not sell any of the items showcased on this site. Please direct all other inquiries to militaryfactory AT

Part of a network of sites that includes GlobalFirepower, a data-driven property used in ranking the top military powers of the world, and, the World Directory of Modern Military Aircraft.

Facebook Logo YouTube Logo