基于QAR数据的碳当量值适航符合性验证方法

曹惠玲; 汤鑫豪

doi:10.13700/j.bh.1001-5965.2019.0272

基于QAR数据的碳当量值适航符合性验证方法

doi: 10.13700/j.bh.1001-5965.2019.0272

曹惠玲^,,
汤鑫豪

中国民航大学航空工程学院, 天津 300300

基金项目:

中央高校基本科研业务费专项资金 YCJJ201933

中国民航大学开放基金 000031020102

详细信息

作者简介:
曹惠玲, 女, 博士, 教授。主要研究方向:航空发动机性能分析、航空发动机节能减排, E-mail:hlcao@cauc.edu.cn

汤鑫豪, 男, 硕士研究生。主要研究方向:航空发动机节能减排

通讯作者:
曹惠玲, E-mail:hlcao@cauc.edu.cn

中图分类号: V217⁺.3;U8
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出版历程
- 收稿日期: 2019-05-31
- 录用日期: 2019-08-30
- 网络出版日期: 2020-03-20

Airworthiness compliance verification method of CO₂ metric based on QAR data

CAO Huiling^,,
TANG Xinhao

College of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, China

Funds:

the Fundamental Research Funds for the Central Universities YCJJ201933

Civil Aviation University of China Open Fund 000031020102

More Information

Corresponding author: CAO Huiling, E-mail:hlcao@cauc.edu.cn

摘要

摘要:
为评估飞机碳排放水平并验证适航性，对国际民用航空组织最新的碳排放认证程序进行了研究。以比航程（SAR）和基准几何因子（RGF）组成的综合指标碳当量值作为评估适航性的度量，根据飞机最大起飞重量（MTOM）值选取试飞测量点，并确定对应的飞机碳当量值限制线。提出了一种基于快速存储记录器（QAR）数据的飞机碳当量水平快速评估方法，利用新服役飞机的QAR数据，使用多参数支持向量机回归（SVR）方法分别建立燃油消耗率和飞行速度相对于推力的修正关系，通过飞机总重换算求解3个飞行测量点条件下的SAR值，并计算碳当量值。使用一架B777-200新飞机的QAR数据进行实例分析，计算结果显示，该机型碳当量值为1.598 7，超出限制线20.5%。提出的基于QAR数据的碳当量值计算方法可以用于飞机碳排放水平的快速评估。
- 碳当量值 /
- 适航 /
- 比航程(SAR) /
- 基准几何因子(RGF) /
- 快速存储记录器(QAR)数据
Abstract:
To assess aircraft carbon dioxide emission levels and verify airworthiness, the latest ICAO certification process for carbon dioxide emissions has been studied. The comprehensive index CO₂ metric consisting of the specific air range (SAR) and the reference geometry factor (RGF) is used as a measure of airworthiness. The test flight measurement point is selected according to the maximum takeoff weight (MTOM) value of the aircraft, and the corresponding aircraft carbon dioxide metric value limit line is determined. Based on this, a fast evaluation method of aircraft CO₂ metric based on quick access recorder (QAR) data is proposed. Using the QAR data of the new serving aircraft, the corrected relationship between fuel consumption rate and thrust and that between airspeed and thrust are established by multi-parameter support vector machine regression (SVR) method. The total weight of the aircraft is used to solve the SAR values and the CO₂ metric under the three flight test points. The QAR data of a new serving B777-200 aircraft was used for case analysis. The calculation results show that the CO₂ metric of the model is 1.598 7, which exceeds the limit line by 20.5%. The proposed calculation method of CO₂ metric based on QAR data can be used as an effective way to complete the rapid assessment of aircraft carbon dioxide emission levels.
- CO₂ metric /
- airworthiness /
- specific air range (SAR) /
- reference geometry factor (RGF) /
- quick access recorder (QAR) data

HTML全文

图 1 飞机基准几何因子

Figure 1. Aircraft reference geometry factor

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图 2 飞机3个特征测量点

Figure 2. Three characteristic measuring points of aircraft

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图 3 飞机总重变化条件下的比航程值分布规律

Figure 3. Distribution law of SAR under changing condition of GW

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图 4 SAR和GW关系

Figure 4. Relationship between SAR and GW

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图 5 碳当量值符合性对比

Figure 5. CO₂ metric conformity comparison

下载: 全尺寸图片幻灯片

表 1 测量点选取稳态容限条件

Table 1. Measuring point steady state tolerance limit condition

参数	判稳条件
马赫数Ma	ΔMa < 0.005
环境温度TAT	ΔTAT < 1℃
航向角α	Δα < 3°
俯仰角β	Δβ < 3°
滚转角σ	Δσ < 3°
地速GS	ΔGS < 3.7km/h(2kt)
地速变化率DGS	ΔDGS < 2.8km/h/min (1.5kt/min)
飞行高度ALT	ΔALT < 23m (75ft)
注：kt为速度单位，knots的缩写，此速度单位常用于航海、航空等领域。

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表 2 测量点飞机总重条件

Table 2. Measuring point aircraft total weight condition

实时总重量	表达式	数值/kg
高总重量	0.92MTOM	227433
中总重量	(0.92MTOM+0.45MTOM+ 0.63MTOM^0.94)/2	199643
低总重量	0.45MTOM+0.63MTOM^0.924	171853

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表 3 部分时刻相关飞行参数

Table 3. Relevant flight parameters (partial)

时刻/s	WF.L/ (kg·s^-1)	WF.R/ (kg·s^-1)	EPR.L	EPR.R	TAS/ (m·s^-1)
4302	0.8873	0.8730	1.1367	1.1357	246.206
4943	0.8996	0.8996	1.1484	1.1484	244.407
5384	0.9016	0.8994	1.1475	1.1484	245.178
7125	0.8975	0.8934	1.1494	1.1504	244.793
7966	0.8607	0.8627	1.1143	1.1145	243.407
⋮	⋮	⋮	⋮	⋮	⋮

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表 4 比航程值和碳当量值计算结果

Table 4. SAR value and CO₂ metric calculation results

状态	实时总重量/kg	SAR	(1/SAR)_AVG	RGF	CMC
高总重量	227433	0.1978
中总重量	199643	0.1473	0.1353	270.7	1.9264
低总重量	171853	0.0969

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表 5 喷气运输机碳当量限制值调整系数

Table 5. Jet plane CO₂ metric limit value adjustment coefficient

MTOM范围/kg	C₁	C₂	C₃
5700 < MTOM < 60000	-2.73780	0.681310	-0.0277861
MTOM>70395	-1.412742	-0.020517	0.0593831

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