It looks like it came out of a science fiction movie: B-21 Raider refuels in flight with a Boeing KC-135 Stratotanker in the USA.

Written by Ruth Rodrigues

Published on 16/04/2026 at 10:03

Updated on 02/05/2026 at 15:51

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B-21 Raider conducts in-flight refueling with Boeing KC-135 Stratotanker, extending range and validating tests in the USA.

The United States Air Force has released the first official images of the B-21 Raider in air refueling operations with the Boeing KC-135 Stratotanker, confirming the progress of tests for the new aircraft. The activity takes place at Edwards Air Force Base in California, as part of a campaign conducted in partnership with Northrop Grumman.

The tests are considered essential to validate the global range of the bomber, which is expected to become a key component in the U.S. military strategy.

Tests with B-21 Raider follow rigorous validation steps

The in-flight refueling process involves several technical phases. Initially, the B-21 Raider conducts approach tests to the so-called ‘refueling envelope,’ which defines the safe conditions for position, speed, and approach between the aircraft.

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Efficiency reduces dependence on tanker aircraft

One of the highlights of the B-21 Raider is its fuel consumption efficiency. According to Northrop Grumman, the model consumes only a fraction of what fourth and fifth-generation aircraft use.

This means a lower need for logistical support with tanker aircraft, increasing operational flexibility. Therefore, the aircraft allows for longer and more strategic missions.

Moreover, in-flight refueling significantly extends the operational range of the aircraft, according to the manufacturer.

B-21 Raider conducts in-flight refueling with Boeing KC-135 Stratotanker, extending range and validating tests in the USA. Image: U.S. Air Force

B-21 Raider program advances with multiple aircraft in testing

Northrop Grumman reported that the B-21 Raider test campaign now involves multiple aircraft. The flights include performance assessments, handling, and system checks.

So far, two units have been publicly seen, although the total number has not been disclosed. The company also highlighted that there have been no significant maintenance issues between recent missions.

The first flight of the model took place in November 2023, at Plant 42 of the Air Force.

New bomber to replace old models in the fleet

The B-21 Raider is classified as a sixth-generation aircraft and was developed to replace part of the current fleet of the United States. Among the models that are to be gradually retired are:

B-1B Lancer
B-2 Spirit

Meanwhile, the bomber is expected to operate alongside the B-52 Stratofortress.

The Air Force confirmed that the first unit of the B-21 Raider is expected to be delivered to Ellsworth Air Force Base by 2027. The site is already undergoing construction and adaptations to accommodate the new platform.

With over $5 billion invested in technology and infrastructure, the program is advancing rapidly. Thus, the new bomber enhances the strategic capability of the U.S. and consolidates a new generation of long-range air operations.

Source: Aerial Power

It looks like it came out of a science fiction movie: B-21 Raider refuels in flight with a Boeing KC-135 Stratotanker in the USA.

B-21 Raider conducts in-flight refueling with Boeing KC-135 Stratotanker, extending range and validating tests in the USA.

Tests with B-21 Raider follow rigorous validation steps

Efficiency reduces dependence on tanker aircraft

B-21 Raider program advances with multiple aircraft in testing

New bomber to replace old models in the fleet

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It looks like it came out of a science fiction movie: B-21 Raider refuels in flight with a Boeing KC-135 Stratotanker in the USA.

B-21 Raider conducts in-flight refueling with Boeing KC-135 Stratotanker, extending range and validating tests in the USA.

Tests with B-21 Raider follow rigorous validation steps

Efficiency reduces dependence on tanker aircraft

B-21 Raider program advances with multiple aircraft in testing

New bomber to replace old models in the fleet

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Australia prepares to dredge 96.5 million m³ in Moreton Bay to deepen, widen, and realign channels of the Port of Brisbane, in a project of up to 25 years designed to accommodate larger ships and enhance maritime safety and regional port efficiency.

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