Used G4 Jet

The Gulfstream IV-SP (G-IV) | Office for Ship and Flight Operations

G-IV travels around and over the development of tropic hurricanes to get a detailled image of the ambient tops. Covering a distance of nearly 4,000 sea-mile and with a cruise height of 45,000 ft, this airplane provides observation data at high elevations crucial to the definition of atmospheric meteorological system in the topography.

However, the main tools used for this purpose are a tubular device detached from the ground, known as a drop wind probe. G-IV measurement is removed from the drop probe, which sends the changes in pressures, temperatures, humidities and Doppler frequencies back to the airplane as it sinks to the ground.

From the Doppler displacements, the diagonal and diagonal winds are calculated. Once the drop probe information has been analyzed and processed, the information is reformatted and transferred to the National Centers for Environmental Prediction and the Nationalurricane Center for incorporation into our comprehensive range of models. They are also made available to forecast hurricanes and provide real-time observation of the synthetic pattern around the cyclone.

A further important instrument is a Tail Doppler radar (TDR), which is installed at the tail of the airplane. TDR is an 8,000-watt radarsystem that rotates slow as the airplane travels through the hurricane and observes the structural features using radars to measure the intensities of hurricanes. CrewHurricane and Snowstorm missions:

Partition wall to partition wall = 8 feet cabin length (cockpit to luggage comp.) = 33 feet useful area Useful length = 33 feet useful width = 6 feet useful height = 4 feet useful area = 792 feet.

Gulfstreams GIV | Business Jet Travelers

With a typical price of around $8 million, a well utilized GIV provides tremendous value in velocity, reach, cabin dimensions and occupant throughput. "Mesinger said there were 45 used PIVs on the shelves in May, but most of them had not been considered because of the high hourly rates, damages, bad service histories and high pricing.

Yet if you want a standing booth and more than just a trans-continental reach, you must seriously consider placing the GIV on your checklist. GIV's key feature is its diversity, said Darcy Eggeman, a retiree company airline driver who spent 3,500 flying time. "The GIV, first supplied in 1987, followed the beloved QIII.

Launched in 1976, the GIII was first shipped in 1979 and consolidated Gulfstream's position as the 80's leader in commercial jets. Setting record speeds and distances in its class, it could be configurated for 15 occupants and was the first commercial jet to come equipped with a winglet as part of its series.

However, the GIII's two Rolls-Royce Spey power plants used the classical 1950' technology: they were high-performance, messy, noisy aspirators that were rugged but terribly costly to upkeep. Whilst the GIII was ok for the leap from the east coast to Europe, Gulfstream's clients said they wanted even more reach and better business management.

In the early 1980s, Gulfstream began construction of a four-engine successor to the GIII. Later in the programme draft, Gulfstream decided to keep the GIV as a twin jet and develop a new Rolls-Royce jet for Tay. Tay's bigger blower gave the powerplant better operational economy, cleaner exhaust and a lower sound signatures, while delivering 13,850 lbs of thrusts at the same time.

The plane also needed a new one, which was less heavy, could carry 1,000 gal more propellant than the GIII and had less air resistance. By the time the plane was certificated in 1987, it had a maximum velocity of 500 kn, a cruising distance of 4,220 sea mile and a height of 45,000 ft.

Throughout the years, GIV's service has been greatly facilitated as Gulfstream has evolved from the time-based /monthly approach still used by most of today's personal jets to a "task-oriented" programme common to airplane-service. Hourly service costs exceed $1,300, and motor overhaul costs can exceed $1.5 million each.

While the Tays take up less propellant than the Speys of the GIII, the GIV is still the most thirsty jet in its category. One fully laden GIV weights 73,000 lbs, 29,000 of which is petrol. The GIV clients were able to have fully customized interior fittings fitted, but most were equipped with seats for 12 to 16 with front or back entry gates, a front team toilet and a staff toilet at the aft.

Cabins, with one or two berths, can be installed in the tail of the plane in front of the head toilet. "It is also accessible in the air through the back of the toilet. Gulfstream said other favorite modernization choices for the GIV included the broadband multi-link network and communication system;craft Service Change (ASC) 190, which modified the wings and chassis to support higher total weights as well as greater ranges and payloads; and ASC 465A, for the integration of an enhanced Honeywell booster engine that provides better cab flow and more take-off performance for the engine.

Until 2003, follow-on jets were manufactured, among them the gradually better GIV-SP and the G400. Though the G450 may look similar, it does offer more cruising distance, new electronics and electronic motor control, a bigger dashboard and a newly designed cab entry, enhanced cab height and environment control, lower consumption and better high and high temperature power.

A new G450 starts at $49 million and even an GIV-SP of medium use can reach $15 million.