Gulfstream G400

Business Jet [ 2025 ]

Introduced in October of 2021, the Gulfstream G400 targets the large-cabin, long-range bizjet market.

Authored By: Staff Writer | Last Edited: 10/05/2021 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.

Image from official Gulfstream Aerospace marketing materials.

GO TO SPECIFICATIONS [+]

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The Model G400 is one of the latest entries into the proven Gulfstream business jet lineup. The aircraft's design is centered on the large-cabin "bizjet" market and built around the qualities of performance and efficiency without sacrifice. The type was unveiled in October of 2021 by the Savannah, Georgia-based company alongside its larger cousin, the G800 detailed elsewhere on this site.

Externally, the G400 continues to rely on the proven physical aspects seen in other Gulfstream offerings; the fuselage is tubular and well-streamlined for high-speed flight while the wing mainplanes are fitted low to the sides of the fuselage at midships and swept-back for high-speed efficiency. Furthermore, each member is capped by a fuel-saving winglet contoured elegantly into the design. The cockpit seats two side-by-side ahead of a sharp nosecone assembly. The engines were placed at the rear of the design to reduce internal noise and mounted outboard of short wing stubs. The tail unit encompasses a "T-style" plane arrangement in which a single vertical fin supports the horizontal planes at the very top edge of the fin. Ground-running is accomplished by way of a traditional wheeled, retractable tricycle undercarriage.

Internally, the aircraft will feature cabin/living spaces set across three distinct zones in a single-aisle arrangement: seating for up to eleven with sleeping for up to four, a complete lavatory, and complete kitchen. Ten cabin windows will provide unparalleled views for passengers while an air purification system will recycle the cabin air every two minutes.

The cockpit is given three large, full-color touchscreens showcasing all pertinent operating information across an all-modern, digitally-driven instrument panel to ease crew workload and enhance situational awareness in all phases of flight. The throttle quadrant is at a shared center console located between the two crewman, each pilot given F-16-style side-mounted flight sticks. The avionics set is the Symmetry Flight Deck featuring the Phase-of-Flight intelligence system and the Predictive Landing Performance System, the latter coming into play during approaches.

As designed, the G400 has a listed maximum range out to 4,835 miles (4,200 nautical miles and can reach near-supersonic speeds of 0.90 (long range cruising set to about Mach 0.85). Marketing materials detail direct, non-stop flights from Sao Paulo, Brazil to Miami, Florida, or Los Angeles, California to Moscow, Russia, beating out competing products in the same class. The bizjet will fly to altitudes of 51,000 feet.

Power is set to come from a pair of Pratt & Whitney PW812GA non-afterburning turbofan engines designed around noise reduction, fuel savings, and low emissions output. Thrust output is 13,500lb.

Structurally, the aircraft will sport a Maximum Take-Off Weight (MTOW) of 70,000lb with a maximum payload rating of 4,050lb. Total length is 86.2 feet with a height of 25.3 feet and wingspan of 86.3 feet.©MilitaryFactory.com

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Specifications

Service Year

2025

Origin

United States

Status

IN-DEVELOPMENT
Program in Progress.

Crew

2

Production

1
UNITS

Gulfstream Aerospace - USA

(View other Aviaton-Related Manufacturers)

United States (probable)

(OPERATORS list includes past, present, and future operators when applicable)

✓ Commercial Aviation
Used in roles serving the commercial aviation market, ferrying both passengers and goods over range.

✓ BizJet
Used in roles serving the business aviation market, primarily VIP and regional travel.

✓ VIP Service
Used in the Very-Important-Person (VIP) passenger transport role, typically with above-average amenities and luxuries as standard.

RADAR-CAPABLE

Houses, or can house (through specialized variants), radar equipment for searching, tracking, and engagement of enemy elements.

MULTI-ENGINE

Incorporates two or more engines, enhancing survivability and / or performance.

WING SWEEPBACK

Mainplanes, or leading edges, features swept-back lines for enhanced high-speed performance and handling.

HIGH-SPEED PERFORMANCE

Can accelerate to higher speeds than average aircraft of its time.

HIGH-ALTITUDE PERFORMANCE

Can reach and operate at higher altitudes than average aircraft of its time.

EXTENDED RANGE PERFORMANCE

Capability to travel considerable distances through onboard fuel stores.

SUPER PERFORMANCE

Design covers the three all-important performance categories of speed, altitude, and range.

MARITIME OPERATION

Ability to operate over ocean in addition to surviving the special rigors of the maritime environment.

CREWSPACE PRESSURIZATION

Supports pressurization required at higher operating altitudes for crew survival.

ENCLOSED CREWSPACE(S)

Features partially- or wholly-enclosed crew workspaces.

RETRACTABLE UNDERCARRIAGE

Features retracting / retractable undercarriage to preserve aerodynamic efficiency.

Length

86.2 ft
(26.27 m)

Width/Span

86.3 ft
(26.30 m)

Height

25.3 ft
(7.70 m)

Empty Wgt

69,997 lb
(31,750 kg)

(Showcased structural values pertain to the base Gulfstream G400 production variant)

monoplane / low-mounted / swept-back

Monoplane
Design utilizes a single primary wing mainplane; this represent the most popular mainplane arrangement.

Low-Mounted
Mainplanes are low-mounted along the sides of the fuselage.

Swept-Back
The planform features wing sweep back along the leading edges of the mainplane, promoting higher operating speeds.

(Structural descriptors pertain to the base Gulfstream G400 production variant)

Installed: 2 x Pratt & Whitney PW812GA non-afterburning turbofan engines developing 13,500lb of thrust each.

Max Speed

690 mph
(1,110 kph | 599 kts)

Cruise Speed

652 mph
(1,050 kph | 567 kts)

Max. Speed Diff

+37 mph
(+60 kph | 32 kts)

Ceiling

51,001 ft
(15,545 m | 10 mi)

Range

4,833 mi
(7,778 km | 14,405 nm)

♦ MACH Regime (Sonic)

Sub

Trans

Super

Hyper

HiHyper

ReEntry

♦

(Showcased performance specifications pertain to the base Gulfstream G400 production variant. Performance specifications showcased above are subject to environmental factors as well as aircraft configuration. Estimates are made when Real Data not available. Compare this aircraft entry against any other in our database or View aircraft by powerplant type)

None.

Supported Types

(Not all ordnance types may be represented in the showcase above)

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Image from official Gulfstream Aerospace marketing materials.