Airline Pilot A320 | B737 | Flight Sim Enthusiast. (Views and comments are personal)
Aug 13, 2023 • 8 tweets • 3 min read
Weekend read 📖✈️
The #A320, launched on March 2, 1984 was designed for a Maximum takeoff of weight (MTOW) of 68,000 Kgs.
The first A321, launched November 24, 1988 had the same wing, but a much higher - 83,000 Kg MTOW.
Here’s how Airbus did it !
To keep the cruise performance the same as the A320, the increase weight of the larger A321 required slight changes.
The first being a slight extend of the trailing edge, increasing the total wing area by 4 meters from 124 sq m to 128 sq m during cruise.
Jun 11, 2023 • 7 tweets • 4 min read
The #A350's 64.75m wing-span is designed using nature’s perfect understanding of aerodynamics to maximise lift and reduce drag, further optimising fuel burn and lowering CO2 emissions.
Here are 2 ways the #A350 reduces drag & fuel burn. 1. Variable Camber (VC) symmetrically in cruise optimizes wing profile by small flap deflection & aileron droop in order to manage the center of lift of the wing & adjust the camber or the wing in order to reduce drag & slightly improve performance.
Feb 3, 2023 • 9 tweets • 3 min read
When aircraft are flown outside of their established operating limits – the flight envelope – and correction efforts are not made or occur too late, it can lead to loss of control in flight (LOC-I).
Safety innovation 🧵 on The Airbus flight envelope protection.
High angle-of-attack protection: This protects against the risk of an aerodynamic stall, including in situations of wind shear, as well as during dynamic manoeuvres or in gusty conditions
Jan 25, 2023 • 7 tweets • 3 min read
Aircraft doors & emergency exits are for ingress/egress of pax & crew on ground only.
A question asked by many : Can these doors/exits be opened in-flight ?
🧵
Operating the opening handle, the door moves slightly inward (0.5-4mm depending on door rigging) then upward before opening outward & moving fwd parallel to the fuselage.
The initial inward movement brings a gap between door & fuselage door stops, thus allowing the door to go up
The engine idle speed control is used to prevent stall during idle. The goal-to idle at as ⬇️ RPM as possible yet keep it from running rough/stalling when power-consuming accessories - air conditioning and alternators, turn on
Q. How many engine idle’s are there for CFM56 #A320 ?
• Reverse Idle ( approx.70% N2 )
= Approach Idle + 1000 RPM FADEC sets the engine speed at reverse idle when the throttle is set in the reverse idle detent position.