On all 737 aircraft produced since 1969, Boeing uses hydraulic thrust reversers to change the direction of the exhaust. This creates a force against forward motion to slow the aircraft. The hydraulic system replaces the earlier pneumatic system used by the manufacturer.Know More
The deflector doors are set at a 35 degree angle to vertical, allowing the thrust reversers to direct the plane's exhaust over the wings inboard and under the wings outboard. This angle prevents the thrust diverters from blowing debris into the wheel well and prevents lifting the plane back off the runway.
The hydraulic design provides several significant advantages for the plane. It employs a longer exhaust pipe than the pneumatic design, which improves the cruise performance of the 737 and reduces drag. Boeing data shows this type of thrust reverser to be twice as effective as older style clamshell thrust reversers, according to Power Plant.
On propeller-driven aircraft, thrust reversal is possible using variable-pitch propellers. The pilot adjusts the pitch so the propeller pushes against the air instead of pulling it. However, the jet aircraft uses the force of the exhaust gas to provide forward motion. Changing the exhaust direction is the only requirement to provide the desired velocity change.Learn more about Airplanes & Helicopters
An airplane's black box is constructed using a layers of material and insulation, all of which makes these devices very hard to damage beyond the point of usefulness. "Black box" is the colloquial term for a flight recorder, which collects data that can be used to analyze the cause or factors that contributed to an airplane accident or crash.Full Answer >
Etihad Airways and Emirates historically rank among the world's leading airlines, but change spots on the charts. Emirates earns the top spot in Skytrax's list of top 10 airlines, while Etihad ranks seventh, notes Forbes. Etihad earned the top spot at the 2014 World Travel Awards, however, for having an exceptional first class and attentive flight staff.Full Answer >
In 2013, a test of the X3 helicopter set a record for helicopter speed at 255 knots, or about 293 miles per hour, according to Wired magazine. However, the average non-military helicopter cruises at a speed of about 130 to 145 miles per hour, claims Air Business International.Full Answer >
The Lockheed SR-71 Blackbird holds the airspeed record, as of 2014. On July 28, 1979 the plane reached a top speed of 2,193 mph, or Mach 2.9. The pilots on the historic flight were Air Force test pilots Eldon W. Joersz and George T. Morgan, Jr.Full Answer >