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Northrop Grumman B-21 Raider


Long Range Strike - Bomber (LRS-B)


Northrop Grumman was awarded the rights to design, develop, and produce the next USAF strike bomber through the LRS-B initiative.
Authored By: Staff Writer | Last Edited: 2/27/2020
On February 26th, 2016, the designation of "B-21" was revealed for the upcoming Northrop Grumman LRS-B program. Artist renderings were also revealed and showcase a bomber form not unlike the current B-2A "Spirit" series currently in USAF service. Performance and capabilities will be forthcoming as the project is evolved - as such, this article will be updated accordingly.

Partners announced for the B-21 program are Pratt & Whitney (engines), BAe Systems (electronics), GKN Aerospace (metals and composites), Janicki Industries (composites and tooling), Orbital ATK (wing skins and nacelles), Spirit Aerosystems (metals and composites), and Rockwell Collins (communications). Northrop Grumman will provide the onboard radar fit.

The B-21 is expected to enter service in the latter half of the 2020s with a target fleet of 100 aircraft. These will be used to succeed (perhaps optimistically at this point) the aging line of Boeing B-52, Rockwell B-1 and even Northrop's own B-2 stealth bombers currently in service. The USAF's Rapid Capabilities Office (RCO) is heading the initiative.

Based on released artist renderings, the B-21 will have an all-wing planform not unlike the B-2A "Spirit" stealth bomber, incorporating all learned, and possibly new, stealth techniques into its design. The flight crew numbers two and the team is seated at the apex of the "arrow" shape of the planform. All major compartments are situated at the center mass of the aircraft whose fuselage is blended into the wings to promote a very-low-profile when viewed from the size. At rear, the engines will be (as in the B-2A) embedded into the design with its exhaust protected as much as possible from IR locators. A conventional, multi-wheeled retractable tricycle undercarriage is assumed for ground-running. An unmanned option has been bandied about for the new bomber design.

Compared to the B-2A, the B-21 will be given an extended nose section, or "beak", forming the apex of the arrow-like form. The nose leg of the undercarriage is set to be placed further aft in the nose compartment and will be made to a shorter height specification while the main legs are simplified by showcasing fewer wheel bogies. The cockpit is detailed with two windscreens (as opposed to four as seen in the B-2A) and the engine inlet will be integrated closer to the center mass of the fuselage, reducing the overall length of the fuselage itself. Attention is being paid to medium-/higher-altitude flight controlling by implementation of a simplified wing by the trailing edges and "sawtooth" leading edges.

Overall dimensions appear to indicate a smaller overall bomber form when compared to the relatively massive B-2A though true specifications have yet to be revealed.






Program Updates



February 2016 - Work on the B-21 project began.

September 2016 - The name of "Raider" has been assigned to the B-21 by the USAF. It is in honor of the "Doolittle Raiders" of World War 2. The service seeks to purchase 100 B-21s at a cost of $564 million per aircraft.

March 2017 - It was announced that the B-21 had passed a pair of preliminary design reviews.

November 2017 - Requirements of the B-21 product, and its basic design, have been completed.

June 2018 - The B-21's Critical Design Review (CDR) is slated for completion before the end of 2018. The CDR phase precedes the component manufacturing step required to produce a flyable prototype.

October 2019 - The first B-21 airframe is reportedly under construction by Northrop Grumman out of the company's Palmdale, California facility. A first-flight is tentatively scheduled for December 2021.

February 2020 - New USAF renderings depict the soon-to-be B-21 Raider stealth bomber in hangar at Whiteman AFB.

Specifications



Year:
2032
Status
In-Development
Crew
2
[ 0 Units ] :
Northrop Grumman - USA
National flag of United States United States (planned)
- Ground Attack
- X-Plane / Developmental
Length:
65.62 ft (20 m)
Width/Span:
164.04 ft (50 m)
Height:
16.40 ft (5 m)
(Showcased structural dimension values pertain to the Northrop Grumman B-21A production model)
Empty Weight:
154,324 lb (70,000 kg)
MTOW:
374,786 lb (170,000 kg)
(Diff: +220,462lb)
(Showcased weight values pertain to the Northrop Grumman B-21A production model)
(Assumed): 2 x Pratt & Whitney turbofan engines developing over 15,000lb of thrust each (estimated).
(Showcased powerplant information pertains to the Northrop Grumman B-21A production model)
Maximum Speed:
621 mph (1,000 kph; 540 kts)
Service Ceiling:
49,213 feet (15,000 m; 9.32 miles)
Maximum Range:
6,835 miles (11,000 km; 5,940 nm)
(Showcased performance values pertain to the Northrop Grumman B-21A production model; Compare this aircraft entry against any other in our database)
Assumed internal weapons bay supporting up to 50,000lb of ordnance (conventional drop bombs and precision-guided bombs) including nuclear-tipped bombs/missiles.
(Showcased armament details pertain to the Northrop Grumman B-21A production model)
B-21 - Official Series Designation applied in February of 2016.
LRS-B ("Long Range Strike - Bomber") - Project Name

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