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This Engine Was Destroyed at 28000 Miles From Neglect My 200k mile engine is cleaner than this 28k mile one. Skipped oil changes caused sludge like wax and tar, clogging orifices and destroying it. #FordMaintenance #WhitefaceFord #DieselTrucks

11,663 views • 1 month ago •via X (Twitter)

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Following the Delta A330-323(N813NW) engine failure after departure from São Paulo (GRU), many are asking: what actually happens if an airliner loses an engine just after takeoff? As passenger in the cabin watching this scenario unfold, the panic is understandable. Seeing flames from an engine is alarming. But this is exactly the kind of scenario pilots are trained for repeatedly in simulators. Modern multi-engine aircraft are designed to fly safely on one engine. In fact, losing one engine is a certification requirement during testing. Here’s what happens: At liftoff, pilots target V2 speed—the minimum safe speed that guarantees the aircraft can continue climbing even with one engine inoperative. If an engine fails: • The MASTER FIRE warning light will illuminate in the cockpit and the fire warning bell will sound, alerting the pilots on the affected engine (they will close the fuel, hydraulic shutoff, and engine bleed air valves, and also discharge the related fire bottle to extinguish the engine fire). Of course, they will be careful NOT TO shut down the wrong engine (this has happened before). • Maximum thrust is applied on the remaining engine. • Rudder input keeps the aircraft straight (countering asymmetric thrust) • The aircraft climbs straight ahead for best performance (turns reduce climb rate unless required) Once above a safe altitude (typically ~1,500 ft / Minimum Flap Retraction Altitude(MFRA): • The aircraft accelerates • Flaps are retracted (“cleaning up”) • Crew assesses the situation and plans a return or diversion Even at very low altitude, the aircraft remains controllable by design. It may not climb aggressively, but it will climb. Bottom line: What looks catastrophic from the cabin is a scenario pilots are highly trained to handle—and aircraft are engineered to withstand. Hope this helps any nervous flyer. Flying is safe, and the chances of this happening have reduced due to lessons learned from previous incidents. And if you ever find yourself in this situation, trust that the pilots will act according to their training—because that’s their job.

Turbine Traveller

42,927 views • 5 months ago

This is the most powerful commercial jet engine currently flying on an operational airliner. The GE90-115B was built by GE Aerospace specifically for the Boeing 777-300ER. It weighs around 8.3 tonnes, has a 3.25 metre wide fan and produces up to 512 kN (115,000 lbf) of thrust from a single engine. To understand the sheer scale of that output, it produces roughly 2.7 times the thrust of the F135 jet engine powering the F-35, the most powerful fighter engine currently in service. The enormous fan at the front uses just 22 carbon fibre composite blades with titanium leading edges. At maximum thrust, it pulls in roughly 1.4 tonnes of air every second, with nearly 90% bypassing the core rather than passing through the combustor. At around 150 knots during takeoff, its 512 kn of thrust corresponds to roughly 39.5 MW of propulsive power, or in automotive terms around 53,000 hp from one engine. And it burns roughly 4-5 kg of jet fuel every second at maximum power conditions. Two of these engines are enough to power a fully loaded 777-300ER weighing more than 350 tonnes. Even if one engine fails after the critical point during takeoff, the aircraft is certified to continue the takeoff and climb on the remaining one GE90 engine. Each engine costs around $35-40 million. More than 2,500, GE90s engines have been built, and the GE90 family has accumulated nearly 130 million flight hours. And this is precisely why companies like GE Aerospace remain so difficult to displace in jet engines. There is never one breakthrough. GE spent roughly $2+ billion developing the GE90, chasing small gains across hundreds of systems, efficiency, materials, reliability and component life.

Ammanichanda

51,608 views • 3 days ago

Congrats to the Tesla team. This is a watershed moment for freight in America. $0.15/mile EV vs ~$0.50 diesel ($0.60+ when diesel spikes) Operating costs are the hero. Once fleets see it at scale and production ramps, sales will rocket. EV trucks will take over the roads. Extended POV: This isn’t about specs. It’s about economics under utilisation. Freight is brutal: high miles, heavy loads, tight margins. That’s exactly where EVs dominate. Core specs that matter: • Range: 325–500 miles (523–805 km) • Gross combination weight: up to ~82,000 lbs (37 t) • Energy use: ~1.7 kWh/mile fully loaded • Battery: ~600–900 kWh est • Motors: 3 independent rear motors Charging flips the model: • Megawatt charging (MCS) capable • ~60–70% in ~30 mins • ~400 miles recovered in a stop (real-world target) • Depot charging overnight = lowest cost energy Now the key part: At ~1.7 kWh/mile → $0.15/mile assumes ~$0.09/kWh depot energy Diesel: → ~6–7 mpg → $3–4/gal = ~$0.45–0.70/mile That gap is everything. And fleets scale that instantly. Then layer in: • near-zero idling losses • far less maintenance (no engine, gearbox, exhaust systems) • regenerative braking reducing wear • higher uptime And the system gets even stronger: → solar + battery depots pushing energy cost toward zero → load balancing across fleets → software routing + charging optimisation → predictable operating costs vs oil volatility This isn’t a truck upgrade. It’s a system rewrite. Diesel = fuel logistics Electric = energy + software Fleets don’t buy hype. They buy cost per mile. Once they hit scale production, it won’t be gradual. Fleet is where the system flips. ⚡🚛

Chris Meder

213,842 views • 4 months ago