GB/T 47821-2026General requirements for the design and inspection of hypersonic wind tunnel test models (English PDF)

3 Terms and definitions

4 General requirements for the model design

5 Detailed requirements for the model design

6 Requirements for the testing of the model

Foreword

This document was issued on 2 July 2026 by the State Administration for Market Regulation and the Standardization Administration of the People's Republic of China, and takes effect on 1 February 2027.

It is the first edition of this standard.

The document is under the responsibility of the Academy of Military Sciences of the PLA.

Classification: ICS 49.020, CCS V 04.

3 Classification and status

GB/T 47821-2026 is classified under ICS 49.020, in the field of aircraft and space vehicle engineering. ICS is the International Classification for Standards, the same scheme used by ISO and by the national bodies of most countries, which is what allows a Chinese standard to be placed beside its foreign counterparts on subject rather than on number.

Its Chinese Standard Classification code is CCS V 04. CCS is the domestic scheme, a letter for the sector and two digits for the subject within it, and it is the code by which the standard is filed and searched in China.

The GB/T prefix marks a recommended national standard. It is not, in itself, law: it becomes binding when a contract names it, when a regulation or a mandatory standard refers to it, or when a producer declares conformity with it. In practice that covers most of the cases in which it will be read — a purchase specification, an inspection agreement or a certification scheme.