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Depuis septembre 2025, le centre Essais propulseurs de la Direction Générale de l’Armement (DGA), situé à Saclay, teste dans des conditions extrêmes l...

The B-52 bomber has eight engines instead of the four of most modern planes because when it was designed, jet engines weren't as strong as they are today.

for an example if some jet engine has 3 blades and some have 4 than what will be the difference in sense of performance and cost etc... ,

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GE Aerospace invests $48M in Asheville to boost jet engine production! Modernizing the plant & creating advanced manufacturing opportunities.

GE Aerospace invests $48M in Asheville to boost jet engine production! Modernizing the plant & creating advanced manufacturing opportunities.

The administration of White House is preparing to approve a deal for the sale of General Electric jet engines for Turkey’s domestically developed fighter aircraft, TAI TF KAAN, despite objections from some members of the U.S. Congress. According to published information, the proposed package is valued at more than $700 million. The engines are intended to […] Post $700 million confidential agreement: White House supports Turkey’s main aviation program at Root-Nation.com.

La Corée du Sud a fixé le financement et le calendrier du développement d’un nouveau moteur de combat local. Le « Projet de développement avancé de moteurs d’aviation » de Séoul verra un investissement de 3,4 billions de won (3,4 milliards de dollars) et se déroulera de 2027 à 2040, selon l’Administration du programme d’acquisition de défense. Le programme aboutira à un moteur avec une poussée militaire de 16 000 lb (71 kN) et une poussée de 24 000 lb avec postcombustion. Séoul avait précédemment indiqué que la poussée militaire du moteur serait de 15 000 livres. « Ce projet impliquera le développement et la production d’un prototype de moteur d’avion avancé, la réalisation de tests de développement et de certification, ainsi que l’achèvement des préparatifs pour les tests en vol montés sur le système », explique la DAPA. « Cela permettra de futurs essais en vol sur des avions de combat produits dans le pays. » Séoul promeut depuis longtemps son intention de développer un moteur de combat local. Hanwha Aerospace, qui produit sous licence des moteurs de chasseurs étrangers, **jouera un rôle clé dans le moteur** qui propulsera la future variante Block 3 du chasseur KF-21 de Korea Aerospace Industries. Corée du Sud récemment **a créé un organe interministériel** coordonner le développement du moteur et garantir que les efforts ne sont pas inutilement reproduits au sein du gouvernement et de l’industrie. Les variantes Block 1 et Block 2 du KF-21 seront propulsées par le GE Aerospace F414, produit localement par Hanwha.

LONDON (Reuters) -Wizz Air is edging towards a deal with RTX-owned Pratt & Whitney to purchase engines for 177 of its Airbus jets already on order, according to two industry sources. An announcement could come as early as this week’s Paris Airshow, they said, adding it would form part of a settlement with the engine maker over groundings caused by repair times. Wizz Air and Pratt & Whitney parent RTX declined comment. The airline, which operates an all-Airbus fleet, last year said it had two options - its current supplier Pratt & Whitney, whose engines are facing issues worldwide, forcing airlines to ground planes, and competitor CFM, a joint venture between GE Aerospace and France’s Safran (EPA:SAF). Choosing the next engine provider would depend on the acquisition cost, durability of the engine, operating cost and cost guarantees for aftermarket activities, Wizz Air Chief Executive Jozsef Varadi told Reuters. Its profit for its 2025 financial year, which ends on March 31, slumped over 60% due to the knock-on effects of the groundings.

In a note to clients, the brokerage said Safran’s "current share price broadly reflects the company’s continued profitable growth." The stock’s price-to-earnings ratio, which stood at 36.4 last year and is expected to hover around 32.6 in 2025, is "towards the upper end of peer multiples/yields," but is not "stand-out expensive," Citi argued. "We believe Safran’s market position and cash conversion justify a premium valuation. We also believe this premium is broadly reflected in the current share price," the strategists led by Charles Armitage wrote. By 05:04 ET (09:04 GMT), the stock had dipped by 1.1% to 263 euros in Paris trading. So far this year, Safran has jumped by more than 22%. The Citi analysts noted that their near-term sales and operating profit forecasts for Safran are roughly 3%-5% above consensus estimates, although their projection for income in 2030 is slightly below market expectations. Its free cash flow forecasts "straddle consensus depending on the year," they added. In April, Safran delivered stronger-than-anticipated first-quarter sales and said it was looking into ways to manage the effect of increased uncertainty around global trade relations. The firm suggested that it was exploring possibly passing on a special trade-related surcharge to customers such as airlines who purchase spares or repair services. CEO Olivier Andries told reporters that it was also in talks with its suppliers to mitigate the impact of the tariffs on its own expenses. But media reports said Safran and other groups have already agreed to take on some of the cost of the levies incurred by suppliers. The maker of everything from plane landing gears to cabin interiors posted a 16.7% surge in revenues to 7.257 billion euros during the first quarter. It backed its full-year forecasts as well, noting that its targets omitted any possible future impact from U.S. President Donald Trump’s sweeping tariff agenda.