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jet-planes-release-smoke-91 Analysis of the use of commercial aircraft tracks for climate engineering has shown them to be generally unsuitable. Carnegie Institution for Science. The Fiat G. In Januarythe Fiat G. Sky-X Sky-Y.

The re-engineering work that had been performed to cure the vibration problem was very extensive and resulted in the second prototype being fitted with a larger tail, a six cm two in higher canopy, and the addition of a ventral fin. The second prototype had other modifications, including the installation of a full armament and a more powerful Orpheus engine capable of 4, lbf.

The final selection of the competing designs was planned for late During these trials, the Italian aircraft is claimed to have delivered an impressive performance. In January , the Fiat G. Given the large economic and commercial interests at stake, there was a certain amount of controversy surrounding this decision.

The Italian government had elected to order the G. These pre-production machines would later go on to serve for many years with the Italian aerobatic team, the Frecce Tricolori , designated as the G. By , Fiat Aviazione was in the process of establishing the first production line for the G. The first order was for 50 aircraft from Aeritalia, then Dornier and other German firms had an order for machines, which was later increased to The German order involved a production run of G.

On 20 July , the first German-built G. Aeritalia also negotiated a comprehensive license manufacturing agreement for the Orpheus engine that powered the type.

During early , four G. It is a subsonic aircraft , being powered by a single Bristol Siddeley Orpheus turbojet engine. The all-metal fuselage uses conventional and straightforward construction methods, being a semi- monocoque design manufactured in three sections. The forward section, which was produced separate to the others before being rivetted to the centre fuselage, contains various radio navigation and communication equipment such as radio direction finder , transponder , ultra high frequency UHF radio, and identification friend or foe IFF ; the nose typically contained a total of three cameras.

It is surrounded on three sides with steel armour plating, the glass windshield is also armoured. The center fuselage section houses the armament bay, which is set beneath the cockpit, and the seven split fuel tanks , which are protected against damage from ground fire by armour plating. Other munitions included various rockets and bombs ; while gun pods and external drop tanks can be installed on hardpoints fitted on the wing.

Both weapons and ammunition in the armament bay were mounted on panel doors, which could be easily removed and quickly swapped by two men during rearming on the ground. The wing features single-slotted flaps and hydraulically -actuated ailerons. For the purpose of readily carrying out operations from austere airstrips, Fiat developed purpose-built ground support equipment for easy and rapid servicing of the aircraft.

The equipment needed to inspect, maintain, resupply and repair the G. On 20 February , the first pre-production G. In , the Mo were transferred to Frosinone Airport for trialling the austere basing capabilities of the G.

In , the next operational unit to be formed was 14mo Gruppo , Seconda Aerobrigata. All of them were based at Treviso-Sant'Angelo. During , the pre-production aircraft of mo Gruppo were replaced by production standard G. In late , the first batch of two-seater G. These aircraft were used for the further training of pilots that had recently graduated from the Aermacchi MB jet trainer.

In September , the Luftwaffe received their first two Fiat-built G. On 20 July , the first Dornier-built G. An additional 45 G. Of these, 22 aircraft were built by Dornier between and ; this variant were used to train Weapons Systems Officers for the F-4 Phantom.

Fifty G. Alternatively, these were used as training aircraft and were operated solely by Waffenschule It has been claimed that the Luftwaffe had intended to equip a further four wings with the G. A number of Luftwaffe G. On 1 January , the Luftwaffe fleet consisted of G. From , Portugal became involved in fighting against nationalist movements in its African overseas territories , the series of conflicts becoming known as the Jet Planes Release Smoke Rate Portuguese Colonial War.

In , as the scale of fighting increased, Portugal attempted to purchase surplus Canadian built Sabre Mk 6s from West Germany, but instead, it was offered 40 G.

In , with the United Nations weapons embargo against Jet Planes Release Smoke Unity Portugal, the Air Force faced problems purchasing further numbers of close air support aircraft. An attempt was then made to acquire more Fiat G. These spare parts would be later sold to Portugal and assembled locally with different serial numbers. However, the deal did not follow through as the German government vetoed it. In April , the Portuguese government fell in the Carnation Revolution , with the new government seeking to grant its colonies independence.

Portugal withdrew its G. One of the G. In , a second purchase of 14 G. Portugal finally phased out the last of its G. On 6 September , the first G. However, both Greece and Turkey would ultimately not induct any G. These are called contrails. This can be caused by the water in the engine exhaust condensing, or by the disruption of the air by the passage of the aircraft triggering the condensation of water that was already present. Some aerobatic aircraft have smoke generators which leave much thicker and more visible trails which can be turned on and off and don't depend on particular atmospheric conditions.

White is most common but other colours are possible. The Blue Angels and other display teams have smoke generators in their jets, which have the specific purpose of generating a smoke trail because it looks cool. Smoke trails at airshows are generally for that purpose.

The generators inject a small amount of diesel into the jet exhaust to generate white smoke, and dyed diesel to make coloured smoke. You may also see 'smoke' coming from the wingtips or other parts of fighter aircraft under high G loads. This is actually water vapor condensation from the extremely low air pressure that is briefly generated by a hard turning fighter, and it disappears quickly. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group.

Create a free Team What is Teams? Learn more. Ask Question. Asked 6 years, 6 months ago. Active 3 years, 2 months ago. Viewed 78k times. Improve this question. Tom Tom 2 2 gold badges 7 7 silver badges 11 11 bronze badges.

Sep 23 '14 at Add a comment. Active Oldest Votes. Cirrus clouds triggered by aircraft contrails picture source While the added water vapor in the exhaust gas helps in contrail production, the condensation happening in the pressure field around an aircraft can already produce a contrail all by itself.

Engine and aerodynamic contrail forming behind an A picture source 2. Smoke from unburnt or partially burnt fuel This was prevalent in early jets and allowed to spot them from a distance - just follow the black line, at its tip is an aircraft. For more information I recommend the excellent web page contrailscience This B uses rockets to accelerate quickly which leave the biggest smoke trail, but also the old J left a lot of smoke behind picture source.

Oil mist or smoke flares The third source is shown in your picture: Oil is injected into the hot exhaust stream which forms a dense mist. Smoke flares on the wingtips and fuselage of a glider picture source There are many more things that can be sprayed from an aircraft fuel, obviously, when it has to be dumped in an emergency, fertilizer or insecticides, silver iodide to seed clouds , but these are special cases. Improve this answer. Injecting water cools the engine and gives more mass to accelerate out the back but, because the temperature is lower, there's a lot of partially burnt fuel coming out as black smoke.

Sep 22 '14 at The Blue Angels during a performance are obviously going to have a different set of concerns than a commercial jet is! The Blue Angels in your photo are an example of aerobatic aircraft with smoke generators. Because white smoke e.

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