Vertibird

The VB-02 Vertical Take Off and Landing (VTOL) craft, codenamed Vertibird, is a U.S. military multipurpose tiltwing aircraft primarily used by the Enclave in the post-War United States.

The New California Republic also have limited access to the Vertibirds they captured from Navarro, such as Bear Force One, which is used for high-profile events. The East Coast Brotherhood of Steel own multiple Vertibirds, taken from the Enclave while at war with them.

Background
The Vertibird was still in the prototype phase when the Great War struck in 2077, preventing it from entering full military service which was scheduled for 2085. . As evidenced by the crashed Vertibird on the roof of the Museum of Freedom an early prototype or version of the Vertibird seems to have been in use by the United States Armed Forces just prior to the Great War, though how widespread this use was is unknown. That Vertibirds were in use is further supported by the appearance of a prototype Vertibird with winterized camouflage during the Operation Anchorage simulation dropping U.S. troops before taking off again. However, whether any Vertibirds were ever used during the Alaskan reclamation is uncertain as General Constantine Chase was known to implement his own, fictional content to the simulation.

Following the war the trial aircraft that were already produced and in the field were seized by Enclave members and loyalists and either transferred to their bases or secured in shelters. The Enclave began mass-producing the design in secret, and now the Vertibird is the general-purpose delivery vehicle of the Enclave's military forces. Capable of surgical insertions, extractions and close air support alike, the Vertibird is synonymous with the Enclave in general, and a good representative of their power as a whole.

Design
The Vertibird has a heavily armored fuselage and can be outfitted with a variety of offensive weapons and defensive countermeasures, the most common being Gatling lasers, missile racks, and a mini nuke bed. It is unknown how a Vertibird is powered, however judging by the state of technology before the war it was probably nuclear powered and the Enclave probably required Navarro for coolant refueling. It has a winch that can haul several tons of equipment - or a large deathclaw cage.

There are two known versions of the craft used by the Enclave:
 * A transport-oriented version with a glass canopy, six legs, a large cargo bay, and seven blades on each rotor to provide extra lift. This was the variant used before the Destruction of Control Station ENCLAVE.
 * A dedicated gunship version with a more heavily armored hull, four-bladed rotors and four retractable landing struts as well as greater maneuverability. This is the variant in use by the Enclave Remnants and the Enclave operating in the Capital Wasteland. This is the variant seen after the Destruction of Control Station ENCLAVE.

West Coast Operations
Vertibirds were used by the Enclave to transport personnel and materials between the mainland and the Enclave Oil Rig. Vertibird range was at least 175 miles distance between the Enclave Oil Rig and California. Accessible were Klamath, New Reno and Vault 13. According to the Shi, Vertibirds flew over San Francisco on the way from Navarro to the Enclave Oil Rig.

After the defeat of the Enclave on the west coast and sacking of Navarro, the NCR captured several Vertibirds and started to operate them in a cargo transport role. One was converted to a presidential transport labeled Bear Force One.

It is unknown if the West Coast Brotherhood of steel also recovered vertibirds from Navarro.

East Coast Operations
Vertibirds are known to have appeared on the East Coast in 2277, when the Enclave came out of hiding to secure Project Purity. It is unknown if the Vertibirds were brought over by the Autumn Senior, when he led the Enclave forces east, or had been sequestered there by the Enclave before the war.

The East Coast Brotherhood of Steel acquire Vertibirds, and their related technologies, after defeating the Enclave at the end of the Broken Steel questline.

Advantages
The Vertibird's VTOL flight mechanics allow it to approach landing zones with the speed of a fixed-wing aircraft and transition into a hovering mode of flight, by tilting its rotors vertically upwards 90 degrees. Given this extreme amount of maneuverability, the VB-02 is regarded as a formidable force in the Fallout universe.

Disadvantages
While the design of a Vertibird is convenient, its dual rotor-blades serve as a flight hazard, for if the aircraft were to suffer a single rotary malfunction at a substantial altitude, the VB-02's airframe and distribution of down-wash would cause the aircraft to fall on its side in a dramatic and likely fatal crash.

Combat
Vertibirds are mostly support craft, but they will attack in a few circumstances. They are a significant threat for a wide array of reasons, but the biggest is that they pack an enormous amount of firepower on an extremely well-armored chassis. Their weapons include a nose-mounted Gatling laser, a minigun on the left side of the vertibird for passengers, a pair of missile launchers, and a bomb rack for mini nukes. All of these weapons are threatening; the missile launcher deals heavy damage and can knock an opponent back, the Gatling laser can deal a lot of damage from afar, the minigun is used to mow down large amounts of infantry, and the mini nukes, used in airstrikes against heavy targets and emplaced defenses, can instantly kill a hostile.

Fortunately, the Vertibirds the player character faces are usually set for a specific assignment - either dropping Enclave troops off, or flying racetrack circles and providing fire support. Vertibirds on insertion/extraction duty are not capable of attacking, but their dropping off troops can be problematic, as Enclave soldiers are one of the toughest hostile factions in the Capital Wasteland.

Vertibirds tasked with fire support are the biggest threat, as they eliminate engaging hostile forces to back up Enclave troops on the ground. These Vertibirds often perform bombing runs, and make several passes to eliminate any resistance in the area. Vertibirds on these support flights may open fire with their missile launchers or Gatling lasers, though they do not use them as much as their mini nukes.

Vertibirds can sometimes be encountered on the ground. One noteworthy instance is on the steps of the Capitol Building in the Capital Wasteland. In these cases, upon finding one of the parked Vertibirds, there should be a cage containing a deathclaw inside. When engaged in combat, the Enclave officer nearest to the cage will often let the deathclaw loose.

In Fallout 4 Vertibirds lack the large armament package seen in Fallout 3 and are only armed with two fixed forward firing machine guns and a crew operated minigun mounted on the left hand side. When dropping the Sole Survivor off in an area inhabited with hostiles, the vertibird will sometimes support the player by firing on the hostiles with its machine guns.

Destruction
In Fallout 3, Vertibirds can be destroyed with heavy ordnance, however they cannot be targeted in V.A.T.S. The resulting explosion will scatter a great deal of debris, which will be visible to the player character. A Vertibird explosion is significantly more powerful than that of a car or truck and will kill or seriously injure anyone nearby. The explosion can also kill disembarking Enclave troops, however this can be unreliable due to bugs.

In Fallout 4 Vertibirds can be destroyed by all ranged weapons, with heavy weapons dealing more damage, and can be targeted in V.A.T.S. When a Vertibird is airborne and takes enough damage it starts spinning on its Y axis, similar to how helicopters spin when they lose their tail rotor, and crashes into the ground. The Vertibird usually breaks up into 4 large pieces upon crashing, releasing small amounts of radiation for a short while.

Realistically, the Fallout 4 Vertibird's death tailspin would be more commonly seen on helicopters instead of tilt wing's like the Vertibird and its real life cousin, the V22 Osprey, as failing helicopters can use a principle used as autorotation to spiral down, whereas critically damaged tiltwings and tiltrotors do not have this capability.

Fallout 2

 * In 2241, Daisy Whitman's Vertibird crashed near the trapper town of Klamath due to a rotor malfunction; it was the first sign of the Enclave encountered by the Chosen One.
 * The Chosen One stole the Vertibird plans from the Navarro base, although it is not certain whether he gave them to the Brotherhood of Steel, the Shi, the Hubologists, or simply kept them for his own use.

Fallout 3
Vertibirds appear in the Capital Wasteland, along with the Enclave, after The Waters of Life quest. They are used by the Enclave for transport and fire support. Vertibirds will appear through out the Capital Wasteland, deploying Enclave troops. A large number of Vertibirds are seen fleeing the destruction of Raven Rock, with some crashing in the confusion. Vertibirds are encountered on the ground and in the air during the quest Take it Back!, with Liberty Prime and the Lone Wanderer (if equipped with heavy weapons) destroying them along the way to Project Purity.

Vertibirds appear in the last stage of the Operation: Anchorage add on despite them not meant to be deployed for another eight years. This may be due to General Constantine Chase hijacking the programming of the simulation.

In the Broken Steel add on, Vertibirds appear at Adams Air Force Base as well as captured one called Pride One. This vertibird was captured, studied and modified by the Brotherhood of Steel between the recapture of Project Purity and the final Broken Steel quest Who Dares Wins. Pride One was studied and then modified by Scribe Vallincourt, with the only visible modification is the Brotherhood logo on both sides.

Fallout: New Vegas
In FoNV the NCR uses vertibirds that were captured from the Navarro during the NCR-Enclave conflict. One modified Vertibird, named Bear Force One, is seen transporting President Kimball to Hoover Dam. Destroyed NCR Vertibirds are found at Long 15 if the NCR are nuked at the end of Lonesome Road. These are likely used for cargo transport and not combat as they are't seen fighting the Legion.

An ex-Enclave Vertibird is located in the Remnants bunker and be seen in the battle for the dam, if the Courier convinces them to support their cause.

A Crashed Vertibird also appears in the Mojave Wasteland, surrounded by leveled Sentry bots and Mister Gutsys

Fallout 4
In Fallout 4 the Vertibird has under gone a redesign/face-lift from its previous appearances. It is larger in appearance and has a transparent cockpit, sliding doors on the cabin, a pintle mounted minigun on the left hand side and folding wings and rotors.

The Vertibird appears in the opening sequence of Fo4, one is seen flying over Sanctuary Hills and landing next to the entrance to Vault 111. Crashed and wrecked Vertibirds are found throughout The Commonwealth, usually with some power armor nearby.

Operational Vertibirds are seen after the quest Reunions when a Brotherhood of Steel force shows up with The Prydwen. The player gains the ability to call in a Vertibird to transport them to a location after the quest Show No Mercy.

Enclave

 * As the main producer of the pre-War design, the Enclave hold the world's largest fleet of VB-02's.

Brotherhood of Steel

 * The East Coast Brotherhood of Steel has multiple Vertibirds, which they can launch and retrieve from their airship, The Prydwen.

New California Republic Army

 * The NCR holds a presidential transport named Bear Force One. They also own a fleet of cargo vertibirds, as seen by wreckage on the Long 15 if it is destroyed.

Gunners

 * In Fallout 4 the Gunners faction posses at least one Vertibird and will use it to attack the player at random near their positions on the southern part of the map.

Commonwealth Minutemen

 * After With Our Powers Combined, Preston Garvey inform The Sole Survivor that the Minutemen captured a Brotherhood of Steel Vertibird, and by trial and error learned to fly it.

Railroad

 * During Rockets' Red Glare, the Railroad capture a Brotherhood of Steel Vertibird, with the designation of Claymore. After the quest is complete, the Sole Survivor will be able to call in the Vertibird with a Vertibird signal grenade.

Design background

 * The name "Vertibird" is the trademark for a toy helicopter playset popular in the 70s.
 * Many design aspects of this aircraft in Fallout 1 and 2 appear to be inspired by the hovering insect, the dragonfly. For example, the six legged landing gear and twin bulges in the forward fuselage.

Vertibird designation
The designation "VB-02" would, in real-world US military usage, indicate that it is a bomber aircraft. As the Vertibird's primary roles appear to be transport and ground attack, the "VB" prefix seems to be simply intended as an abbreviation of Vertibird. In post-1962 US Department of Defense nomenclature, the transport variation's designation would probably be CV-2, meaning "cargo/transport VTOL, design number 2", with the gunship variant being "A/CV-2", meaning "Attack Purposed, Cargo/Transport VTOL, design number 2".

Bugs
In Fallout 4, The wreckage from a destroyed vertibird may continue to move long after it has crashed, sending (harmless) fuselage spinning over and over around the crash-site

In Fallout 4, A vertibird may become bugged when "destroyed" leaving it permanently at 0 HP and spinning in the air. This can be resolved by fast traveling away.