EF 128

Project name attribution

Record the exact designation and Junkers attribution used by each source without silently normalising uncertain prefixes.

1. Which contemporary document explicitly connects the EF 128 designation to Junkers? provenance
2. Which expanded or prefixed names are contemporary designations and which are later catalogue conventions? definition

Configuration family boundary

Associate claimed EF 128 revisions with explicit documents rather than creating separate registered things from later illustrations.

1. Which dated proposals establish distinct EF 128 configurations? provenance
2. Do claims of alternative crew arrangements or mission versions describe documented revisions, related projects or later speculation? boundary

Attributable geometry

Resolve the reported swept-wing, tailless configuration against original drawings before treating detailed geometry as settled.

1. Which original drawing establishes EF 128 wing planform, vertical surfaces and the presence or absence of a separate horizontal tail? provenance
2. What dimensions and sweep reference line belong to that drawing, and are they stated or inferred from scale? measurement
3. How does the same baseline assign pitch, roll and yaw control? definition

Installation baseline

Keep proposed powerplant, crew complement and equipment arrangements attached to the configuration that specifies them.

1. Which primary record confirms or corrects the reported HeS 011 engine selection for EF 128? provenance
2. What intake, exhaust, cockpit and equipment arrangement is shown in that same configuration? definition
3. Which equipment items were baseline provisions and which were optional proposals? boundary

Requirement traceability

Attach intended role and selection claims to dated requirements or decisions.

1. Which contemporary requirement identifies the intended EF 128 mission and evaluation criteria? provenance
2. What evidence distinguishes submission, favourable evaluation, development authorisation and production approval? boundary

Performance claim status

Preserve the provenance, configuration and conditions of each figure rather than assigning the proposal an unconditional operating envelope.

1. For each EF 128 performance figure, is the source a requirement, contemporary estimate, test result or later reconstruction? provenance
2. What altitude, mass, thrust assumption and fuel load accompany the figure? measurement
3. Which comparisons with other fighter proposals remain valid when evidence classes and conditions are matched? action

Physical realisation evidence

Evaluate each claimed construction or test milestone independently; an intended aircraft does not establish a completed airframe.

1. Which contemporary records establish whether EF 128 test models, mock-ups or full-size airframe components were actually produced? provenance
2. What is the latest securely documented project milestone, and what remains unknown after it? boundary

Representation authenticity

Require provenance for images and objects, and label reconstructed details separately from documented design content.

1. Who created the EF 128 depiction or object, when, and from which project documents? provenance
2. Which visible features are documented and which were supplied by a modeller or illustrator? boundary
3. May the agent use this item for identification, dimensional inference or only an explicitly labelled illustration? 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 EF 128 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 EF 128 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 EF 128 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 EF 128 this model covers, and on what evidence? provenance