Long March 2A

CZ-2A name boundary

CNSA describes the early vehicle as CZ-2 and assigns four launches to that designation; this does not independently resolve the registry's CZ-2A boundary. [CNSA: Long March 2](https://www.cnsa.gov.cn/n6758824/n6759008/n6759011/c6794032/content.html)

1. Does CZ-2A denote a contemporary formal variant, a modification baseline or a retrospective catalogue label? definition
2. Which original records connect the name CZ-2A to specific configurations and vehicle serials? provenance

Variant transition evidence

Require documented modifications and naming decisions before assigning predecessor or successor relationships.

1. Which documented changes separate the original CZ-2, the vehicle called CZ-2A and CZ-2C? boundary
2. Which lineage statements are supported by manufacturer records rather than inferred from shared components? provenance

Propulsion baseline

CNSA describes the Long March 2 series as using two-stage architecture and nitrogen tetroxide with unsymmetrical dimethylhydrazine; exact CZ-2A engine revisions still require configuration-specific evidence. [CNSA: Long March launch-vehicle family](https://www.cnsa.gov.cn/n6758968/n6758973/c6771770/content.html)

1. Which stage arrangement and engine revisions are documented for vehicles explicitly identified as CZ-2A? provenance
2. Which propellant, thrust and burn-duration values belong to each stage, and under what reference conditions? measurement

Comparable physical specifications

Keep overall vehicle dimensions and liftoff mass separate from stage-only measurements and later variant data.

1. What are the verified length, core diameter and liftoff mass for the attributed CZ-2A configuration? measurement
2. Do the reported measurements include the payload, adapter, fairing and loaded consumables? boundary

Recoverable-satellite association

CNSA records a Long March 2 launch from Jiuquan on 26 November 1975 placing China's first recoverable remote-sensing satellite into its intended orbit; the source uses Long March 2 rather than settling the CZ-2A designation. [CNSA: 1975 launch anniversary](https://www.cnsa.gov.cn/n6758968/n6758972/c6798636/content.html)

1. Which recoverable-satellite missions can be assigned specifically to CZ-2A under the adopted naming boundary? provenance
2. Where does launcher delivery end and the satellite's independent orbital and recovery mission begin? boundary

Qualified payload envelope

Distinguish demonstrated payload delivery from rated capacity and account for adapter and fairing constraints.

1. What payload mass is supported at a specified orbit and inclination, and is it demonstrated or calculated? measurement
2. What evidence establishes the CZ-2A fairing envelope, adapter interface and separation compatibility for a proposed historical payload? action

Control-chain evidence

Associate guidance sensors, electrical power, control links and separation functions with a documented vehicle baseline.

1. Which guidance, attitude-control and electrical-power arrangements are established for CZ-2A? provenance
2. Which documented event confirmations distinguish stage separation, upper-stage operation and payload release? definition

Readiness and hazard evidence

Require period-specific evidence for acceptance tests, ground interfaces and safety provisions rather than assigning modern certification marks.

1. Which organizations issued the applicable CZ-2A acceptance requirements, and what surviving documents identify their scope? provenance
2. What documented evidence would support a claim that a surviving article has been drained, depressurized and rendered inert? action

Attribution-sensitive flight record

Keep launch success, orbital insertion and satellite recovery separate, and retain alternative variant assignments where evidence conflicts.

1. Does the adopted CZ-2A boundary include the November 1974 launch attempt, and which evidence justifies that decision? boundary
2. For each included flight, what evidence establishes its date, vehicle identity and launcher outcome independently of payload recovery? provenance

Legacy object authentication

Distinguish original flight or test hardware, composite exhibits and replicas before transferring type-level properties to a physical object.

1. Which records establish the final CZ-2A production and flight dates under the adopted designation boundary? provenance
2. What serial, construction or custody evidence is required to classify an exhibit as authentic CZ-2A hardware? action

Check these first

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these check these first hold for the sense of Long March 2A this model covers, and on what evidence? provenance

Identifiers and schemes

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these identifiers and schemes hold for the sense of Long March 2A this model covers, and on what evidence? provenance

Real-world use

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these real-world use hold for the sense of Long March 2A this model covers, and on what evidence? provenance

Typical measurements

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these typical measurements hold for the sense of Long March 2A this model covers, and on what evidence? provenance

Failure modes and hazards

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these failure modes and hazards hold for the sense of Long March 2A this model covers, and on what evidence? provenance

Regional variation

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these regional variation hold for the sense of Long March 2A this model covers, and on what evidence? provenance

Neighbouring kinds and how to tell them apart

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these neighbouring kinds and how to tell them apart hold for the sense of Long March 2A this model covers, and on what evidence? provenance