高超声速风洞试验模型底压测量方法研究

谢飞; 郭雷涛; 张绍武; 曹程; 邹琼芬

doi:10.11729/syltlx20150043

高超声速风洞试验模型底压测量方法研究

doi: 10.11729/syltlx20150043

中国空气动力研究与发展中心, 四川绵阳 621000

详细信息

通讯作者:
谢飞(1980-),男,重庆长寿人,工程师。研究方向:高超声速风洞气动力试验技术研究。通信地址:四川省绵阳市中国空气动力研究与发展中心(621000)。E-mail:feixiefei@sohu.com

中图分类号: V211.752
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- 被引次数: 0
出版历程
- 收稿日期: 2015-03-23
- 修回日期: 2015-11-22
- 刊出日期: 2016-08-25

Study on model base pressure measuring technique in hypersonic wind tunnel

China Aerodynamics Research and Development Center, Mianyang Sichuan 621000, China

摘要

摘要: 针对高超声速风洞试验模型底压测量误差较大而导致模型底阻难以精确扣除的问题，在Φ1m高超声速风洞中开展了3种底压测量方法的对比研究，即电子扫描压力测量方法、低压力差压传感器测量方法和微型绝压传感器测量方法，并在马赫数6试验条件下开展了HB-2标模和某导弹模型试验验证。试验结果表明：采用微型绝压传感器进行模型底部压力测量能避免测压管路的影响，可快速响应高超声速风洞试验模型底部压力变化情况，有效提高模型底压的测量精准度。
- 高超声速风洞 /
- 底压 /
- 压力传感器 /
- 电子扫描压力测量
Abstract: It is an experimental technique problem to exactly achieve test model base pressure in hypersonic wind tunnel. Because of the large error of model base pressure measurement before, it is difficult to exactly deduct the model base drag. Three base pressure measuring methods are developed in Φ1m hypersonic wind tunnel, viz. the absolute pressure micro-sensor measuring method, the low pressure differential pressure sensor measuring method and the electronic scanning pressure (ESP) measuring method. The validation tests of HB-2 standard model and a certain missile model are separately conducted at Ma=6. The test results indicate that: the absolute pressure micro-sensor measuring method can avoid the influence of piezometric pipe; it also can rapidly respond the variation of model base pressure with high accuracy.
- hypersonic wind tunnel /
- base pressure /
- pressure sensor /
- electronic scanning pressure measuring

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图 1 电子扫描压力测量系统硬件组成框图

Figure 1. Electronic scanning pressure system

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图 2 CYG220T差压传感器

Figure 2. CYG220T differential pressure sensor

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图 3 CYG504A微型绝压传感器

Figure 3. CYG504A absolute micro-pressure sensor

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图 4 HB-2标模底压测量装置实物照片

Figure 4. HB-2 standard model base pressure measuring device

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图 5 HB-2标模3种方法底压测量结果对比曲线

Figure 5. Comparison of HB-2 standard model base pressure measuring results

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图 6 某导弹模型2种方法底压测量结果对比曲线

Figure 6. Comparison of X missile model base pressure measuring results

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图 7 HB-2标模p_b～α曲线

Figure 7. Base pressure variations with attcak angle of HB-2 standard model

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图 8 某导弹模型p_b～α曲线

Figure 8. Base pressure variations with attcak angle of X missile model

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表 1 HB-2标模3种底压方法测量重复性对比

Table 1. Measuring results of HB-2 base pressure

项目	α/(°)	电子扫描阀	差压传感器	绝压传感器
平均值/Pa	-4	195	212	224
	0	213	238	247
	4	180	198	227
	8	112	134	164
	12	61	82	120
标准差/Pa	-4	11	7	7
	0	10	6	6
	4	10	8	6
	8	8	9	6
	12	9	6	8
重复性偏差/%	-4	10.3	5.9	5.7
	0	9.4	5	4.9
	4	9.4	6.7	4.9
	8	7.5	7.6	4.9
	12	8.5	5	6.5

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表 2 某导弹模型2种底压方法测量重复性对比

Table 2. Measuring results of X missile model base pressure

项目	α/(°)	电子扫描阀		绝压传感器
项目	α/(°)	p_b1	p_b2	p_b1	p_b2
平均值/Pa	-14	563	534	501	458
	-10	525	498	418	375
	-6	552	524	427	405
	-4	595	566	449	436
	-2	630	598	466	456
	0	674	643	493	485
	2	683	653	474	467
	4	704	671	474	468
标准差/Pa	-14	27	24	7	8
	-10	24	26	8	5
	-6	24	24	3	6
	-4	28	31	5	7
	-2	29	31	5	3
	0	35	37	6	3
	2	39	41	3	0
	4	42	44	5
重复性偏差/%	-14	7.7	6.9	2.8	3.1
	-10	6.8	7.3	3.4	2.2
	-6	6.9	6.8	1.1	2.5
	-4	7.9	8.9	2.2	2.8
	-2	8.2	8.9	2.2	1.1
	0	10	10.5	2.5	1.4
	2	11.2	11.6	1.2	0.1
	4	12	12.5	1.9	0.9

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