TECHNICAL EVALUATION OF A RUNWAY USING THE DEFLECTION METHOD

Aviation ◽  
2013 ◽  
Vol 17 (4) ◽  
pp. 150-160 ◽  
Author(s):  
Devinder K. Yadav ◽  
Hamid Nikraz
Keyword(s):  
Civil Aviation ◽  
Load Factor ◽  
Runway Performance ◽  
Heavy Load ◽  
International Civil Aviation Organisation ◽  
Pavement Evaluation ◽  
Technical Evaluation ◽  
Touchdown Point ◽  
Mechanical Elements ◽  
Semi Empirical

An aircraft imposes a heavy load on a runway during landing, resulting in deflection of the runway pavement. Therefore, runway performance is influenced by potential deflection levels. Estimating deflection at touch-down point is a challenging task, however. Generally, the applied load depends on the weight and vertical velocity of the aircraft before hitting the touchdown point. Similarly, performance of runway pavement is influenced by many factors such as number of landings, load factor, soil characteristics, etc. This study discusses landing practices, imposed load analysis, and runway pavement evaluation. The study is based on the idealisation of runway characteristics using mechanical elements, and it suggests that the mechanical modelling approach can be applied to estimate runway deflection. As a result, the analytically predicted deflection findings instead of the semi-empirical practices currently followed by various states of the International Civil Aviation Organisation (hereinafter – ICAO) can be used to carry out technical evaluation of a runway pavement.

A Non-Precision Instrument Approach Procedure with Vertical Guidance (IPV) for Aircraft Landing Using GPS

2001 ◽  
Vol 54 (2) ◽  
pp. 281-291 ◽  
Author(s):  
G. Sasi Bhushana Rao ◽  
A. D. Sarma ◽  
V. Venkata Rao ◽  
K. Ramalingam
Keyword(s):  
Traffic Control ◽  
Cost Effective ◽  
Civil Aviation ◽  
Primary System ◽  
Precision Instrument ◽  
Aircraft Landing ◽  
International Civil Aviation Organisation ◽  
Wide Area Augmentation System ◽  
Airport Runway ◽  
Near Future

In the near future, Spaced-Based Augmentation Systems (such as the Wide Area Augmentation System in North America) will become operational, permitting the use of GPS as a primary system for all phases of flight. Recently the International Civil Aviation Organisation (ICAO) has recommended the use of un-augmented GPS as a supplemental navigation system for all phases of flight including non-precision approaches. In this paper, the salient features of the Air Traffic Control (ATC) system in India, and the use of conventional navigational aids are described. A new landing procedure is proposed using un-augmented GPS known as ‘a non-precision instrument approach procedure with vertical guidance (IPV)’ for Hyderabad Airport, Runway 27. This procedure, if implemented, would be cost-effective and reliable for many airports in India. An algorithm has also been developed for determining the range and bearing between the departure and the arrival waypoints of an aircraft using the IPV.

The Provision of Aerodrome Obstruction Data for Rational Code Civil Air Transport Operations

1956 ◽  
Vol 60 (542) ◽  
pp. 121-130
Author(s):  
F. C. Petts
Keyword(s):  
United Kingdom ◽  
Air Transport ◽  
Civil Aviation ◽  
Transport Aircraft ◽  
Performance Requirements ◽  
The United Kingdom ◽  
International Civil Aviation Organisation ◽  
Survey Technique ◽  
Terrestrial Photogrammetry ◽  
Code Civil

The introduction of rational performance requirements governing the operation of civil transport aircraft has given rise to a need for accurate and detailed information on obstructions in the vicinity of aerodromes. This paper states the origin and nature of the requirement and describes a survey technique, a particular application of terrestrial photogrammetry, which was used to meet it.In the United Kingdom and in other member countries of the International Civil Aviation Organisation considerable progress has been made towards the rationalisation of performance requirements governing the operation of civil transport aircraft.

Asymptotic Results for Buffer Systems under Heavy Load

1987 ◽  
Vol 1 (3) ◽  
pp. 327-348 ◽  
Author(s):  
J. C. W. Van Ommeren ◽  
A. G. de Kok
Keyword(s):  
Load Factor ◽  
Finite Capacity ◽  
Asymptotic Results ◽  
Heavy Load ◽  
Storage Model ◽  
Long Run ◽  
Overflow Probability ◽  
Excess Amount ◽  
Impatient Customer ◽  
Customer Model

This paper considers a dam (or storage) model of the GI/G/I type with a finite capacity K. An arriving input being larger than the unfilled capacity of the dam causes an overflow where the excess amount is lost. Important performance measures for this system are the overflow probability and the long-run fraction of input that is lost. We give asymptotic expansions for these measures for large K both for the case of a load factor less than 1 and for the case of a load factor larger than 1. Also, related results are obtained for the impatient customer model of the M/G/l type.

Emissions Variability and Traversing on Production RB211 Engines

1983 ◽  
Author(s):  
H. L. Hawkins ◽  
J. K. Bhangu ◽  
C. H. Priddin ◽  
P. H. Walker
Keyword(s):  
Environmental Protection Agency ◽  
Gas Turbines ◽  
Representative Sample ◽  
Gas Analysis ◽  
Civil Aviation ◽  
Probe Design ◽  
Engine Exhaust ◽  
International Civil Aviation Organisation ◽  
The Impact ◽  
Sample Transfer

In order to control the emissions from aircraft gas turbines, the International Civil Aviation Organisation (I.C.A.O.) and the U.S. Environmental Protection Agency (E.P.A.) have, through consultations with the various parties over the past decade, made firm proposals for an emission certification scheme, together with mandatory limiting levels for certain pollutants. The compliance with the proposed emission standards requires that a representative sample is collected from the engine exhaust plane and transported without changing its chemical composition to the analysis instruments. Despite clearly defined rules for sample transfer and analysis methods, the emissions measurement will be subject to variability due to the following factors: a) engine-to-engine variability which will include the impact of dimensional tolerance on the combustor hardware and other components which affect the combustor performance, b) sampling variation because of the nonuniform distribution of the pollutant species in the exhaust plane (see references 4,5), with the result that engine manufacturers are required to demonstrate “by means of detailed traverse measurements in the sampling plane” that a specific probe design provides a representative sample, and c) gas analysis instrumentation scatter that occurs in the actual analysis of identical samples.

ICAO Moves Ahead on Aircraft Noise

2001 ◽  
Vol 32 (9) ◽  
pp. 18-19
Keyword(s):  
Aircraft Noise ◽  
Civil Aviation ◽  
Member States ◽  
International Civil Aviation Organisation ◽  
The Eu ◽  
Unanimous Agreement

The 33rd Assembly of the International Civil Aviation Organisation (ICAO), held in Montreal September 25th to October 5th, was attended by 1130 participants from 169 Member States, along with observers from 32 other civil aviation organisations. Unanimous agreement was reached on the noise issue, but only by the exercise of sufficient ambiguity and flexibility to offer an acceptable interpretation to all sides. There could now be a way forward on the EU-US hush kit dispute.

scholarly journals CONTINUING AIRWORTHINESS: MAJOR DRIVERS AND CHALLENGES IN CIVIL AND MILITARY AVIATION

Aviation ◽  
2016 ◽  
Vol 19 (4) ◽  
pp. 165-170 ◽  
Author(s):  
Huong Le ◽  
Ilias Lappas
Keyword(s):  
Regulatory Reform ◽  
Civil Aviation ◽  
Contributing Factors ◽  
Aircraft Accidents ◽  
Management Framework ◽  
International Civil Aviation Organisation ◽  
Military Aviation ◽  
Passenger Aircraft ◽  
The Military ◽  
Fatigue Corrosion

A wide regulatory reform is taking place world-wide in the continuing airworthiness domain. The major influences for promoting changes in how continuing airworthiness is managed are civil and military aircraft accidents to which fatigue, corrosion, wear, deterioration in ageing aircraft and the need for regulatory harmonisation of the International Civil Aviation Organisation (ICAO) signatory states and the military were the contributing factors. Another emerging factor is the conversion of older passenger aircraft to freighters, which brings forth the concern that aircraft are being used in a capacity for which they were not designed. The challenges of the regulatory reform are acceptance, certification of maintenance organizations and personnel, education and training, as well as information sharing and administration. This paper presents both the drivers and challenges in these areas and proposes a related change management framework.

An expert system framework to support aircraft accident and incident investigations

2021 ◽  
pp. 1-26
Author(s):  
C.B.R. Ng ◽  
C. Bil ◽  
T. O’Bree
Keyword(s):  
Expert System ◽  
Civil Aviation ◽  
Accident Investigation ◽  
Member States ◽  
Effective Implementation ◽  
International Civil Aviation Organisation ◽  
Evidence Analysis ◽  
Self Discovery ◽  
Aircraft Accident ◽  
Investigation Process

ABSTRACT The International Civil Aviation Organisation (ICAO) audits its Member States for safety oversight and monitors its Effective Implementation (EI). The global average EI was 68.83% in 2019, with 46% audited Member States achieving 75% EI (2022 target); however, an ICAO (2016 – 2018) audit highlighted six Annex 13 non-compliance issues. One issue was that more than 60% of Member States do not have a comprehensive and detailed investigator training program, contributing to many shortcomings that include a lack of essential and volatile evidence preservation, investigation management, investigation reporting and/or safety recommendations. This paper proposes an Expert System that captures knowledge in aircraft accident investigation generated over many years and allows aircraft investigators to share, access and interrogate accumulated knowledge to support the aircraft accident investigation process. The Expert System will improve the evidence analysing timeline, conclusion consistency and accuracy and support the on-the-job “field” training of evidence analysis through self-discovery.

scholarly journals Implementation of a new RWY reporting system and snowtam format in slovak republic

2021 ◽  
Author(s):  
Marek Drábek ◽  
◽  
Antonín Kazda
Keyword(s):  
Reporting System ◽  
Slovak Republic ◽  
Civil Aviation ◽  
Pilot Training ◽  
International Civil Aviation Organisation ◽  
Recommended Practices ◽  
General Conditions

This paper presents the upcoming changes in the runway reporting format and the newly introduced SNOWTAM format. The aim of the paper is to draw comparisons between the current SNOWTAM format and the updated version applicable as of November 2021. The author analysed information from available documents published by the International Civil Aviation Organisation ICAO, which describe the general conditions adopted to the new runway condition reports formulations. Since the author is enrolled in his pilot training, his objective when writing this final thesis, was to understand the issue of the changes. From this knowledge he can benefit in his future carrier. The paper points out new formats of reports of airport movement areas reporting conditions. As the new reports and techniques of reporting have not been used in real conditions yet, the author based the paper on the ICAO standards and recommended practices, ICAO and EASA guidance material. Introduction of the new methodology is expected to provide a better understanding of reports informing about contamination on movement areas, to ensure more precise aeroplane performance calculations and enhance the safety.

scholarly journals Navigational Aids Systems (Navaids) and Safety Measures of Aircraft : an Analysis.

2017 ◽  
Vol 48 (2) ◽  
pp. 102
Author(s):  
Hassan Adegbayi M ◽  
Osoba Sunday E
Keyword(s):  
Secondary Data ◽  
Policy Formulation ◽  
Civil Aviation ◽  
Primary Data ◽  
Strong Positive Correlation ◽  
Safety Measures ◽  
Positive Correlation ◽  
International Civil Aviation Organisation ◽  
Final Approach ◽  
The Relationship

Abstract This study examines the availability of necessary NAVAIDS required for safe approach and landing; highlight the accidents and incidents occurrences relating to the final approach amongst others. A combination of both primary data and secondary data were employed in the study and findingsshows that there are varying degree of fluctuations in number of aircraft using NAVAIDS in Nigeria from 2003 to 2013 and that there is strong and positive correlation (r< +0.97) in the relationship between the total aircraft and those that uses precision NAVAIDS for final approach and landing during that period. So also, there is strong positive correlation (r< 0.95) between total accidents and incidents and Approach-Landing accident and incidents between 1968 and 2012. The study recommends adequate precision approach NAVAIDS in line with International Civil Aviation Organisation (ICAO) recommendation and policy formulation on replacement of ageing and obsolete NAVAIDS in Nigerian airports among others.  Abstrak Penelitian ini menguji ketersediaan NAVAIDS yang diperlukan untuk pendekatan dan pendaratan yang aman, khususnya pada kecelakaan dan insiden yang berkaitan dengan pendekatan akhir diantara yang lain. Kombinasi data primer dan sekunder digunakan dalam penelitian dan menunjukkan bahwa ada berbagai tingkatan fluktuasi jumlah pesawat yang menggunakan NAVAIDS di Nigeria dari tahun 2003 sampai 2013 dan menunjukkan adanya hubungan yang kuat dan positif (r< +0,97) antara total pesawat dan ketelitian menggunakan NAVAIDS untuk pendekatan akhir dan pendaratan selama periode tersebut. Terdapat pula korelasi positif kuat (r< 0,95) antara total kecelakaan dan insiden dengan pendekatan-pendaratan kecelakan dan insiden antara 1968 dan 2012. Penelitian ini merekomendasikan ketelitian menggunakan NAVAIDS untuk pendekatan sesuai dengan Organisasi Penerbangan Sipil Internasional (ICAO) dan perumusan kebijakan  penggantian NAVAIDS yang usang dan tua di bandara Nigeria lainnya.    

Sign in / Sign up

Export Citation Format

Share Document