CN104615849A - Flight plan evaluating system and implementation method applicable for general aviation - Google Patents
Flight plan evaluating system and implementation method applicable for general aviation Download PDFInfo
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Abstract
The invention discloses a flight plan evaluating system and implementation method applicable for general aviation. The system comprises a microcomputer and at least one database server. The database server is connected with the microcomputer through a digital network. The system has the advantages that factors such as the terrain, the plane type, aviator aptitudes, stowage, fuel oil, taking-off and obstacle crossing, no-fly zones, airports and air line periphery meteorological conditions which affect general aviation flights are mainly analyzed, factors which slightly affect general aviation flight are simplified, and distinctive general aviation features are achieved; a three-dimensional geographic model is built by means of a terrain data repository, the three-dimensional space position is calculated based on the longitude and latitude coordinates of each flight path point and cruise altitude information in the flight plan, and three-dimensional evaluation is achieved for the general aviation flight plan flight path by combining the terrain, the control zone, the monitoring zone, the report zone, the no-fly zone, the abnormal weather zone and other information of the three-dimensional space where the flight path is located.
Description
Technical field
The invention belongs to blank pipe technical field of automation, particularly relate to a kind of the flight planning evaluating system and the implementation method that are applicable to General Aviation.
Background technology
General Aviation refers to and uses civil aircraft to be engaged in Civil Aviation Activities beyond public air transport, multiple industries such as events in operation cover agriculture, woods, herd, fishing, industry, building, scientific research, traffic, amusement.The particular content of General Aviation embraces a wide spectrum of ideas, and has maneuverability, the feature such as rapidly and efficiently, and therefore its status in civil aviation transportation is also outstanding all the more.
According to civil aviation authority's statistical communique display, by the end of the year 2013, the quantity of domestic general-purpose aircraft will have reached 1519 framves.Simultaneously, the flight total amount of China's General Aviation reached 59.1 ten thousand hours in 2013, comparatively increase about 14.3% last year, " the some suggestions about promoting Civil Aviation Industry " that State Council issues propose, the year two thousand twenty General Aviation developing goal realizes Normalization, flight total amount reaches 2,000,000 hours, and by this data estimation, the coming years, domestic annual General Aviation Flight amount increased about 19%.Above-mentioned data show the industry size expanding day of General Aviation, and flight demand is gradually vigorous, has had the enough large market demand, this inevitable requirement gradual perfection General Aviation service guarantee system.
General Aviation with generally transport the features such as there is compared with aviation aircraft maneuverability, flying height are low, operating area situation complexity, so General Aviation service guarantee system is different from generally transport aviation.Flight Service Stations is as the pith of General Aviation service guarantee system, it can provide for General Aviation the service of flying widely, comprise and provide Meteorological Services, flight planning service, flight to support and other desired help, carry out evaluation process comprising to flight planning.But, domestic at present do not have the special flight service system for General Aviation, ins and outs data abroad about General Aviation Flight service station is also little, therefore must build the General Aviation Flight service station with independent intellectual property right, for Flight provides higher-quality flight to serve.
General Aviation Flight service station provides interim service to user, and flight planning evaluating system belongs to a part for the front service of flight, its service provided for General Aviation user comprises: the assessment of flight planning course line, the assessment of flight planning flight path section, aircraft and the assessment of pilot's seaworthiness, meteorology assessment, aircraft prestowage and fuel consume assessment, the assessment of runway heading obstacle clearing capability etc.
In view of the foregoing, General Aviation Flight service station needs a rational system and implementation method to assess General Aviation Flight plan, thus judges the rationality of General Aviation Flight plan, but still lacks such system and implementation method at present.
Summary of the invention
In order to solve the problem, the object of the present invention is to provide a kind of the flight planning evaluating system and the implementation method that are applicable to General Aviation, to solve the present situation in the disappearance flight planning assessment of General Aviation field.
In order to achieve the above object, the flight planning evaluating system being applicable to General Aviation provided by the invention comprises: microcomputer, at least one database server, wherein database server is connected with microcomputer by digital network.
Described microcomputer is provided with flight planning assessment terminal; The system unit that database server B1 carries comprises: flight plan data thesaurus, terrain data storage storehouse, control zone data repository, weather data thesaurus, aeroplane performance data repository; Digital network is General Aviation Flight service station local area network.
The implementation method being applicable to the flight planning evaluating system of General Aviation provided by the invention comprises the following step performed in order:
Step 1) receive, store and manage the S01 stage of flight planning: the General Aviation Flight Program Assessment terminal be arranged in computer A 1 receives the flight planning message sent by digital network L, then enter the flight plan data thesaurus on database server B1, and assess the flight planning of terminal management storage by flight planning;
Step 2) S02 stage of flight planning course line assessment: extract from terrain data storage storehouse through, latitude and altitude figures, build three-dimensional geographic model, flight path locus is calculated through, latitude coordinate and cruising altitude information, the information such as the distance of the regulatory area of assessment planning flight path process, report district, surveillance zone and itself and no-fly zone according to each track points in flight planning;
Step 3) flight planning flight path section assessment the S03 stage: the three-dimensional geographic model utilizing the S02 stage to build and each track points warp, latitude coordinate, by the method for High Accuracy and Divide interpolation obtain desired track topographic profile in the vertical direction, in conjunction with each track points cruising altitude, draw flight planning flight path section, whether each stage aircraft of assessment flight planning keeps safe altitude with ground;
Step 4) S04 stage of aircraft and the assessment of pilot's seaworthiness: the concrete condition, the pilot's qualification that utilize the execution flight aircraft in flight planning message, assessment aircraft and pilot whether seaworthiness;
Step 5) planned course relates to S05 stage of meteorological assessment: obtain associated course line periphery weather data, the live forecast data in airport according to flight planning message Intermediate Course and airport of rising and falling, whether assessment meteorology meets standard;
Step 6) aircraft prestowage assessment the S06 stage: according to the prestowage information provided in flight planning message, calculate the carrying capacity whether carrying capacity exceedes maximum permission, namely confirm that whether carrying capacity exceeds standard, and calculates center of gravity of airplane position by prestowage information simultaneously, whether in the reasonable scope to confirm the center of gravity of airplane;
Step 7) aircraft fuel oil consumption assessment the S07 stage: according to the type provided in flight planning message, route information, calculate and perform the total distance to go of flight planning, with reference to different type of machines climbing, cruise, decline the consumption of each stage to fuel oil, calculating completes amount of fuel needed for flight planning, in conjunction with the amount of fuel that the initial flight of aircraft in flight planning is carried, whether assessment Fuel Remained is in safe range;
Step 8) S08 stage of runway heading obstacle clearing capability assessment: with reference to the model information in flight planning, determine the aircraft aerodynamic model of executive plan, according to runway heading barrier and the distance of runway, the height of barrier, whether the obstacle clearing capability calculating aircraft according to MAX CLB meets safe take-off standard;
Step 9) S09 stage of comprehensive assessment result: gather the assessment of S02-S08 stage to flight planning, comprise: the assessment of flight planning course line, the assessment of flight planning flight path section, aircraft and the assessment of pilot's seaworthiness, planned course relate to meteorological assessment, aircraft prestowage assessment, aircraft fuel oil consumption assessment and runway heading obstacle clearing capability and assess, and finally provide comprehensive assessment suggestion.
In step 6) in, described aircraft prestowage appraisal procedure comprises the following step performed in order: first, according to flight planning and aircraft parameter information, calculate the every moment relevant to aircraft, comprise aircraft bare weight moment, passenger's moment, luggage moment, fuel oil moment, computing formula is as follows:
(weight) * (arm of force)=(moment)
Secondly, aircraft gross weight amount is calculated, i.e. bare weight, passenger weight, baggage wieight and fuel weight sum; Finally, moment sum obtains center of gravity of airplane position divided by general assembly (TW), if the center of gravity of airplane is in safe range, then the aircraft prestowage examination & verification performed by flight planning is passed through, otherwise examination & verification is not passed through.
In step 7) in, described aircraft fuel oil consumes appraisal procedure and comprises the following step performed in order:
1) aircraft type is determined: according to the flight planning determination aircraft type of assessment, from the aeroplane performance data repository of database server B1, extract the aerodynamic model of corresponding type according to aircraft type, determine aircraft at engine start, slide the fuel consume F1 with takeoff phase;
2) useable fuel is determined: according to the flight planning determination useable fuel amount Ft of assessment, useable fuel amount can not exceed the maximum fuel amount that this type can load herein;
3) determined, fallen aerodrome elevation and neighbouring temperature: determined according to three dimensional topographic data in the flight planning assessed and three dimensional topographic data thesaurus, fallen aerodrome elevation, check, fallen near airports weather information, determined, fallen near airports temperature;
4) whether be standard temperature: if not standard temperature if judging, falling near airports temperature, then utilize the method for non-standard temperature correction calculate non-standard temperature on rising, the impact of the section of falling fuel consume, if standard temperature, then directly enter next step without the need to revising;
5) calculate climb, decline required fuel oil: according to step 3) aircraft determined taking off and the sea level elevation change of landing phases and step 4) non-standard temperature that calculates is to the correction of the fuel consume that climbs, declines, in conjunction with aircraft aerodynamic model and performance information, determine to mush, land fuel consume F2;
6) determine cruising altitude, speed: according to flight planning determination cruising altitude Hf and the cruise speed Ff of assessment, in conjunction with aircraft aerodynamic model and performance information, determine that aircraft is at the fuel consume setting the unit interval in cruising altitude and speed;
7) cruise section fuel consume is calculated: calculate total cruising range according to cruise section each track points spatial positional information, cruising range then can obtain the time of cruise section divided by cruise speed, according to step 6) determine the fuel consume of cruise section unit interval, it is multiplied by cruise section total time and then can obtains cruise section fuel consume F3;
8) assess total fuel demand: according to step 1) to step 7) flow process can to obtain the computing formula of total fuel consumption F0 as follows:
F0＝F1+F2+F3
If the difference of total fuel consumption and useable fuel amount is in safe range, then determines to perform by flight planning to meet total fuel demand, otherwise total fuel demand can not be met by flight planning execution.
In step 8) in, described aircraft obstacle clearing capability appraisal procedure comprises the following step performed in order: first, determines the height of runway heading barrier and the distance with runway; Secondly, aircraft takes off according to MAX CLB, obstacle clearing capability when calculating above barrier; Finally, judge whether obstacle clearing capability is greater than maximum safe altitude, if obstacle clearing capability is greater than safe altitude, then exports and calculate gained obstacle clearing capability, otherwise provide obstacle detouring security alarm information, then export calculating gained obstacle clearing capability.
Provided by the invention be applicable to General Aviation Flight flight planning evaluating system and implementation method have the following advantages:
1) low for navigation aircraft flight height, topographic relief threatens larger to flight safety, and the feature that navigation aeroplane performance difference is huge, flying height is changeable, utilize high precision landform interpolation method, adopt the flight profile, mission profile computing method based on navigation aeroplane performance, propose reflection flight and geographical relationship, low-latitude flying section computing method that flying height is changeable, carry out the comprehensive assessment of low-latitude flying section;
2) light for the load-carrying of navigation baby plane, to the feature of the prestowage sensitivities such as personnel, goods, fuel oil, adopt aeroplane performance engineering calculating method, calculate the key parameter of the center of gravity of aircraft, prestowage balance, fuel oil, the obstacle detouring that takes off, thus comprehensive assessment is carried out to the security of Flight plan;
3) for Flight and ground geography information feature in close relations, set up three-dimensional geographic model, achieve the visual assessment of flight overall process flight path 3D of Flight plan.Assessment can intuitively provide flight planning whether exist pass through no-fly zone, whether flight whole process may have the hazard region conditions such as high mountain, the flight whole process whether result such as dangerous meteorological condition;
4) for the changeable demand for rapid evaluation of Flight plan, the mode utilizing network directly to transmit transmits flight plan data, realize flight planning directly being imported into Flight Program Assessment system quickly and efficiently, realize the rapid evaluation of flight planning;
5) differ larger feature for navigation practitioner specialty background with quality, utilize three-dimensional geographic information platform, realize the input of interactive flight planning and manage with editor, three-dimensional map, realize simple and flexible, be easy to the Flight Program Assessment of operation.
Accompanying drawing explanation
Fig. 1 is the flight planning evaluating system structural drawing being applicable to General Aviation provided by the invention.
Fig. 2 is the implementation method process flow diagram being applicable to the flight planning evaluating system of General Aviation provided by the invention.
Fig. 3 is the fuel oil appraisal procedure process flow diagram being applicable to the flight planning evaluating system of General Aviation provided by the invention.
Fig. 4 is the prestowage appraisal procedure process flow diagram being applicable to the flight planning evaluating system of General Aviation provided by the invention.
Fig. 5 is the obstacle detouring appraisal procedure process flow diagram that takes off being applicable to the flight planning evaluating system of General Aviation provided by the invention.
Fig. 6 is the three-dimensional flight planning course line Evaluated effect figure being applicable to the flight planning evaluating system of General Aviation provided by the invention.
Fig. 7 is the two-dimentional flight planning flight path section Evaluated effect figure being applicable to the flight planning evaluating system of General Aviation provided by the invention.
Embodiment
The flight planning evaluating system being applicable to General Aviation to provided by the invention below in conjunction with accompanying drawing and instantiation and implementation method are described in detail.
As shown in Figure 1, the flight planning evaluating system being applicable to General Aviation provided by the invention comprises: microcomputer A1, at least one database server B1, and wherein database server B1 is connected with microcomputer A1 by digital network L.
Described microcomputer A1 is provided with flight planning assessment terminal; The system unit that database server B1 carries comprises: flight plan data thesaurus, terrain data storage storehouse, control zone data repository, weather data thesaurus, aeroplane performance data repository; Digital network L is General Aviation Flight service station local area network.
As shown in Figure 2, the implementation method being applicable to the flight planning evaluating system of General Aviation provided by the invention comprises the following step performed in order:
Step 1) receive, store and manage the S01 stage of flight planning: the General Aviation Flight Program Assessment terminal be arranged in computer A 1 receives the flight planning message sent by digital network L, then enter the flight plan data thesaurus on database server B1, and assess the flight planning of terminal management storage by flight planning;
Step 2) S02 stage of flight planning course line assessment: extract from terrain data storage storehouse through, latitude and altitude figures, build three-dimensional geographic model, flight path locus is calculated through, latitude coordinate and cruising altitude information, the information such as the distance of the regulatory area of assessment planning flight path process, report district and itself and no-fly zone according to each track points in flight planning;
Step 3) flight planning flight path section assessment the S03 stage: the three-dimensional geographic model utilizing the S02 stage to build and each track points warp, latitude coordinate, by the method for decile interpolation obtain desired track topographic profile in the vertical direction, in conjunction with each track points cruising altitude, draw flight planning flight path section, whether each stage aircraft of assessment flight planning keeps safe altitude with ground;
Step 4) S04 stage of aircraft and the assessment of pilot's seaworthiness: the concrete condition, the pilot's qualification that utilize the execution flight aircraft in flight planning message, assessment aircraft and pilot whether seaworthiness;
Step 5) planned course relates to S05 stage of meteorological assessment: obtain associated course line periphery weather data, the live forecast data in airport according to flight planning message Intermediate Course and airport of rising and falling, whether assessment meteorology meets standard;
Step 6) aircraft prestowage assessment the S06 stage: according to the prestowage information provided in flight planning message, calculate the carrying capacity whether carrying capacity exceedes maximum permission, namely confirm that whether carrying capacity exceeds standard, and calculates center of gravity of airplane position by prestowage information simultaneously, whether in the reasonable scope to confirm the center of gravity of airplane;
Step 7) aircraft fuel oil consumption assessment the S07 stage: according to the type provided in flight planning message, route information, calculate and perform the total distance to go of flight planning, with reference to different type of machines climbing, cruise, decline the consumption of each stage to fuel oil, calculating completes amount of fuel needed for flight planning, in conjunction with the amount of fuel that the initial flight of aircraft in flight planning is carried, whether assessment Fuel Remained is in safe range;
Step 8) S08 stage of runway heading obstacle clearing capability assessment: with reference to the model information in flight planning, determine the aircraft aerodynamic model of executive plan, according to runway heading barrier and the distance of runway, the height of barrier, whether the obstacle clearing capability calculating aircraft according to MAX CLB meets safe take-off standard;
Step 9) S09 stage of comprehensive assessment result: gather the assessment of S02-S08 stage to flight planning, comprise: the assessment of flight planning course line, the assessment of flight planning flight path section, aircraft and the assessment of pilot's seaworthiness, planned course relate to meteorological assessment, aircraft prestowage assessment, aircraft fuel oil consumption assessment and runway heading obstacle clearing capability and assess, and finally provide comprehensive assessment suggestion.
As shown in Figure 3, in step 7) in, described aircraft fuel oil consumes appraisal procedure and comprises the following step performed in order:
1) aircraft type is determined: according to the flight planning determination aircraft type of assessment, from the aeroplane performance data repository of database server B1, extract the aerodynamic model of corresponding type according to aircraft type, determine aircraft at engine start, slide and the fuel consume F1 of takeoff phase (unit: L);
2) useable fuel is determined: according to the flight planning determination useable fuel amount Ft (unit: L) of assessment, useable fuel amount can not exceed the maximum fuel amount that this type can load herein;
3) determined, fallen aerodrome elevation and neighbouring temperature: determined according to three dimensional topographic data in the flight planning assessed and three dimensional topographic data thesaurus, fallen aerodrome elevation, check, fallen near airports weather information, determined, fallen near airports temperature;
4) whether be standard temperature: if not standard temperature if judging, falling near airports temperature, then utilize the method for non-standard temperature correction calculate non-standard temperature on rising, the impact of the section of falling fuel consume, if standard temperature, then directly enter next step without the need to revising;
5) calculate climb, decline required fuel oil: according to step 3) aircraft determined taking off and the sea level elevation change of landing phases and step 4) non-standard temperature that calculates is to the correction of the fuel consume that climbs, declines, in conjunction with aircraft aerodynamic model and performance information, determine to mush, the fuel consume F2 that lands (unit: L);
6) cruising altitude, speed is determined: according to the flight planning determination cruising altitude Hf (unit: m) with cruise speed Ff (unit: km/h) of assessment, in conjunction with aircraft aerodynamic model and performance information, determine that aircraft is at the fuel consume setting the unit interval in cruising altitude and speed;
7) cruise section fuel consume is calculated: calculate total cruising range according to cruise section each track points spatial positional information, cruising range then can obtain the time of cruise section divided by cruise speed, according to step 6) determine the fuel consume of cruise section unit interval, it is multiplied by cruise section total time and then can obtains cruise section fuel consume F3 (unit: L);
8) assess total fuel demand: according to step 1) to step 7) flow process can to obtain the computing formula of total fuel consumption F0 as follows:
F0＝F1+F2+F3
If the difference of total fuel consumption and useable fuel amount is in safe range, then determines to perform by flight planning to meet total fuel demand, otherwise total fuel demand can not be met by flight planning execution.
As shown in Figure 4, in step 6) in, described aircraft prestowage appraisal procedure comprises the following step performed in order: first, according to flight planning and aircraft parameter information, calculate the every moment relevant to aircraft, comprise aircraft bare weight moment, passenger's moment, luggage moment, fuel oil moment, computing formula is as follows:
(weight) * (arm of force)=(moment)
Secondly, aircraft gross weight amount is calculated, i.e. bare weight, passenger weight, baggage wieight and fuel weight sum; Finally, moment sum obtains center of gravity of airplane position divided by general assembly (TW), if the center of gravity of airplane is in safe range, then the aircraft prestowage examination & verification performed by flight planning is passed through, otherwise examination & verification is not passed through.
As shown in Figure 5, in step 8) in, described aircraft obstacle clearing capability appraisal procedure comprises the following step performed in order: first, determines the height of runway heading barrier and the distance with runway; Secondly, aircraft takes off according to MAX CLB, obstacle clearing capability when calculating above barrier; Finally, judge whether obstacle clearing capability is greater than maximum safe altitude, if obstacle clearing capability is greater than safe altitude, then exports and calculate gained obstacle clearing capability, otherwise provide obstacle detouring security alarm information, then export calculating gained obstacle clearing capability.
Fig. 6 is the three-dimensional flight planning course line Evaluated effect figure being applicable to the flight planning evaluating system of General Aviation provided by the invention.First, the present invention extracts warp, latitude and altitude figures from terrain data storage storehouse, and build three-dimensional geographic model, dimensional topography curved surface as shown in Figure 6; Secondly, polygonal regions different in figure represents different information, and Z1 represents report district, and Z2 represents anomalous weather region, and Z3 represents no-fly zone, and Z4 represents regulatory area, and Z5 represents surveillance zone; Finally, flight path locus is calculated according to track points warp each in flight planning, latitude coordinate and cruising altitude information, figure middle polyline L1 is the three-dimensional desired track generated, the regulatory area of mainly assessment planning flight path process, report district, surveillance zone are assessed in three-dimensional flight planning course line, calculate the position relationship information of itself and anomalous weather district, no-fly zone simultaneously.
Fig. 7 is the two-dimentional flight planning flight path section Evaluated effect figure being applicable to the flight planning evaluating system of General Aviation provided by the invention, and in figure, horizontal ordinate is flying distance (unit km), and ordinate is height (unit m).First, utilize the three-dimensional geographic model and each track points that build through, latitude coordinate, by the method for High Accuracy and Divide interpolation obtain desired track topographic profile in the vertical direction, as figure middle polyline 2. shown in; Secondly, in conjunction with each track points cruising altitude, draw flight planning flight path section, as figure middle polyline 1. shown in; Finally, calculate total flying distance, whether each stage aircraft of assessment flight planning keeps safe altitude with ground.
Claims (3)
1. be applicable to a flight planning evaluating system for General Aviation, it is characterized in that: it comprises: microcomputer A1, at least one database server B1, wherein database server B1 is connected with microcomputer A1 by digital network L.
2. the flight planning evaluating system being applicable to General Aviation according to claim 1, is characterized in that: described microcomputer A1 is provided with flight planning assessment terminal; The system unit that database server B1 carries comprises: flight plan data thesaurus, terrain data storage storehouse, control zone data repository, weather data thesaurus, aeroplane performance data repository; Digital network L is General Aviation Flight service station local area network.
3. be applicable to an implementation method for the flight planning evaluating system of General Aviation as claimed in claim 1, it is characterized in that: described implementation method comprises the following step performed in order:
Step 1) receive, store and manage the S01 stage of flight planning: the General Aviation Flight Program Assessment terminal be arranged in computer A 1 receives the flight planning message sent by digital network L, then enter the flight plan data thesaurus on database server B1, and assess the flight planning of terminal management storage by flight planning;
Step 2) S02 stage of flight planning course line assessment: extract from terrain data storage storehouse through, latitude and altitude figures, build three-dimensional geographic model, flight path locus is calculated through, latitude coordinate and cruising altitude information, the information such as the distance of the regulatory area of assessment planning flight path process, surveillance zone, report district and itself and no-fly zone according to each track points in flight planning;
Step 3) flight planning flight path section assessment the S03 stage: the three-dimensional geographic model utilizing the S02 stage to build and each track points warp, latitude coordinate, by the method for High Accuracy and Divide interpolation obtain desired track topographic profile in the vertical direction, in conjunction with each track points cruising altitude, draw flight planning flight path section, whether each stage aircraft of assessment flight planning keeps safe altitude with ground;
Step 4) S04 stage of aircraft and the assessment of pilot's seaworthiness: the concrete condition, the pilot's qualification that utilize the execution flight aircraft in flight planning message, assessment aircraft and pilot whether seaworthiness;
Step 5) planned course relates to S05 stage of meteorological assessment: obtain associated course line periphery weather data, the live forecast data in airport according to flight planning message Intermediate Course and airport of rising and falling, whether assessment meteorology meets standard;
Step 6) aircraft prestowage assessment the S06 stage: according to the prestowage information provided in flight planning message, calculate the carrying capacity whether carrying capacity exceedes maximum permission, namely confirm that whether carrying capacity exceeds standard, and calculates center of gravity of airplane position by prestowage information simultaneously, whether in the reasonable scope to confirm the center of gravity of airplane;
Step 7) aircraft fuel oil consumption assessment the S07 stage: according to the type provided in flight planning message, route information, calculate and perform the total distance to go of flight planning, with reference to different type of machines climbing, cruise, decline the consumption of each stage to fuel oil, calculating completes amount of fuel needed for flight planning, in conjunction with the amount of fuel that the initial flight of aircraft in flight planning is carried, whether assessment Fuel Remained is in safe range;
Step 8) S08 stage of runway heading obstacle clearing capability assessment: with reference to the model information in flight planning, determine the aircraft aerodynamic model of executive plan, according to runway heading barrier and the distance of runway, the height of barrier, whether the obstacle clearing capability calculating aircraft according to MAX CLB meets safe take-off standard;
Step 9) S09 stage of comprehensive assessment result: gather the assessment of S02-S08 stage to flight planning, comprise: the assessment of flight planning course line, the assessment of flight planning flight path section, aircraft and the assessment of pilot's seaworthiness, planned course relate to meteorological assessment, aircraft prestowage assessment, aircraft fuel oil consumption assessment and runway heading obstacle clearing capability and assess, and finally provide comprehensive assessment suggestion.
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