ESDU Estimation of airborne performance in landing. ESDU Energy method for analysis of measured airspeed change in landing airborne manoeuvre. ESDU First approximation to take-off field length of multi-engined transport aeroplanes. ESDU First approximation to take-off distance to 50 ft ESDU Example of take-off field length calculations for a civil transport aeroplane. ESDU Introduction to estimation of range and endurance. ESDU Approximate methods for estimation of cruise range and endurance: aeroplanes with turbo-jet and turbo-fan engines. ESDU Lost range, fuel and time due to climb and descent: aircraft with turbo-jet and turbo-fan engines.
ESDU Estimation of cruise range: propeller-driven aircraft. ESDU Lost range, fuel and time due to climb and descent: propeller-driven aeroplanes. ESDU Energy height method for flight path optimisation. ESDU Examples of flight path optimisation using a multivariate gradient-search method. Addendum A: variation of optimum flight profile parameters with range.
ESDU Application of multivariate optimisation techniques to determination of optimum flight trajectories.
MCAS And The 737: When Small Changes Have Huge Consequences
ESDU Statistical methods applicable to analysis of aircraft performance data. ESDU Example of statistical techniques applied to cruise performance guarantees Student's "t" distribution.
ESDU Example of statistical techniques applied to autoland touchdown dispersion confidence intervals for normal and skew distributions. ESDU Variability of standard aircraft performance parameters. ESDU Example of statistical techniques applied to analysis of landing ground roll distance measurements. Linear regression, correlation coefficient and F test. ESDU Example of statistical techniques applied to analysis of measurements of the landing airborne manoeuvre. Multiple linear regression with two independent variables and one dependent variable.
ESDU Example of statistical techniques applied to analysis of effects of small changes. ESDU Similarity rules for application in aircraft performance work. ESDU Example of similarity methods applied to base drag coefficient of conical afterbodies in axisymmetric flow jet off. ESDU Example of similarity methods applied to aircraft drag data from flight test. ESDU Compendium of curves and approximating algebraic functions.
ESDU Introduction to air data system parameters, errors and calibration laws. ESDU The correction of flight-test anemometric data.
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ESDU Derivation of primary air-data parameters for hypersonic flight. ESDU Computation of static pressure downstream of a normal shock for hypersonic flight ambient temperature known. ESDU Pitot and static errors in steady level flight. ESDU Example of analysis and representation of static pressure correction data in steady flight.
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ESDU Pitot and static errors due to non-steady flight. ESDU Calibration of anemometric pressure systems for lag.
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NASA, in partnership with aerospace company Lockheed Martin, is building a much quieter supersonic plane. The plane is light and immensely strong thanks to its carbon fibre construction, similar to that used for modern fighter aircraft. Boeing is also exploring the possibilities of commercial supersonic and even hypersonic planes.
At the Paris Air Show last year, Boeing CEO Dennis Muilenburg said that hypersonic which is even faster than supersonic technology is a really important investment area for the future. In other words, it could still remain too expensive to get off the ground. Boom faces an uphill struggle convincing a conservative industry that a plane with only 50 seats and with a high demand for fuel will work commercially in the long term.
Aviation analyst Bjorn Fehrm says that Boom's main challenge will be making the technology work. Fehrm adds that a new supersonic jet is achievable, but only "at the cost of three times higher fuel consumption per seat and nautical mile. Aviation Week reported on an independent study in which concluded that the demand is there. A decade from now, intercontinental air travel is likely to be very different.
The views expressed in this article are those of the author alone and not the World Economic Forum. I accept. Global Agenda Aviation, Travel and Tourism Future of Mobility Technological Transformation Supersonic jets are making a comeback Supersonic air travel is making a comeback with a reduced cost.
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How do we build a sustainableworld? Submit a video. But these accidents led to technical improvements and changes in operations and legislation that were to make civil aviation increasingly safe. Among the most shocking were the three occasions, within a year, when brand new de Havilland Comet airliners broke up in flight. It was a beauty. It could cross the Atlantic in style and, for a moment, it looked as Britain might truly lead the Jet Age. And, yet, because the nature of metal fatigue, new construction techniques and repeated re-pressurisation of airliner cabins was little understood, early Comets were to fail in spectacularly fatal fashion.
Comet flights were suspended, and production of the British jet was halted.
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The investigation that followed broke new ground in aviation safety. Led by Sir Arnold Hall, director of the Royal Aircraft Establishment, Farnborough, a team of engineers and scientists rebuilt recovered wrecks and, subjecting one of the aircraft hulls to pressurisation tests in a giant water tank, discovered what had gone so very wrong. The Comets had blown apart at the seams. Improved construction techniques, the fitting of rounded rather than square windows these, too, caused cracks and other improvements ensured that later Comets were safe.
Indeed, the final development of the jet — the air-reconnaissance Nimrod — was in service with the RAF until June , more than 60 years after the maiden flight of the Comet 1 in Effectively, fare-paying Comet passengers had been used as research and development guinea pigs, a horrible thought. Sad, too, was the fact that Comet and other British jet sales never really took off after these early accidents.
tr.ovazupeguhir.tk If only de Havilland had got things right in , we might have seen seat Comet s under construction today. Meanwhile, the deep-sea aircraft salvage, reconstruction and investigation techniques developed by the RAE at Farnborough are still very much in use, as are specific lessons learned from fatal air accidents since then. A collision over the Grand Canyon in June , for example, between a TWA Super Constellation and a United Airlines DC-7 — the first commercial crash numbering more than a hundred deaths — led to upgraded forms of air traffic control.
This new body was given total authority over American airspace, including military flights, ensuring that all were mapped and charted. Radio transponders were soon tracing aircraft in flight, while collision warning systems and, finally in the s, GPS Global Positioning System] helped to make aviation so much safer.
In the past half century, and with 30, flights made each day, no airliners have collided over the US. Other notable accidents led to such helpful developments as Cockpit Resource Management crews working as a cross-checking team at all times , smoke detectors and automatic fire extinguishers in lavatories and cargo-holds, wind-shear detectors, transponders and flame-retardant materials. Even then, airlines have pushed reliable jets too far on occasions expecting such winged workhorses as the Boeing 8, built to fly around the clock.