What the data for this category looks like
Data sources for aerospace equipment research reports include public industry research reports for national defense and military aerospace, official disclosure documents from aerospace groups, and annual reports from industry associations. Update frequency adjusts intensively around major model launches and technology breakthrough milestones, with regular quarterly updates. Documents use mixed formats including PDF, PPT, and Excel. They contain professional parameter tables, launch trajectory diagrams, and subsystem structure descriptions. Fields and units include exclusive engineering parameters such as thrust (kilonewtons), orbital altitude (kilometers), and payload mass (kilograms), alongside information like model numbers, development cycles, and mission nodes.
What constraints do these characteristics impose on the document parsing and chunking process?
Mixed-format data sources require the parsing module to support multiple file types including PDF, PPT, and Excel. Long documents and frequent updates require chunking logic to preserve contextual coherence, avoiding breaks in connections between professional parameters. Exclusive engineering parameters and units require the parsing module to accurately identify fields to prevent unit conversion errors. Excel attachments with multiple sheets and high-precision diagrams require the parsing module to fully extract sheet data and original images to avoid missing information. Documents with nested chapter structures require chunking to follow chapter hierarchies, preventing confusion of parameters across chapters.
How to configure the settings
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
maxChunkSize | 800–1200 characters | Aerospace equipment research reports contain long paragraphs of professional parameter descriptions and table content. This range avoids breaking professional contextual connections |
chunkOverlap | 150–200 characters | Preserve parameter associations across chunks, such as linked information between a model's thrust and supporting payload |
enableOcr | Enable only for scanned documents | Most aerospace equipment research reports use copyable text formats. Forcing global OCR will lose original table and formula structures |
parseExcelSheets | Enable parsing for all sheets | Excel attachments in aerospace research reports often split sheets by mission batches and subsystems. Omitting sheets will result in lost complete data |
enableImageExtract | Retain original image format | Launch trajectory diagrams and structural schematic diagrams in aerospace research reports cannot be restored via text. Original images must be retained for subsequent retrieval |
PARSE_FILE_TIMEOUT_SECONDS | 300 seconds | Large aerospace research report PDFs contain multiple pages of charts and embedded attachments, leading to long parsing times. This threshold covers most scenarios |
The parameter values provided on this page are general recommendations to serve as a starting point for configuration. Actual values are affected by material format, data volume and business rules. Specific cases require individual analysis. It is recommended to test on your own samples before finalizing settings.
Three common configuration errors
- Phenomenon: After enabling PDF enhancement features, images in text-image combined research reports are parsed as garbled text by OCR, and no original images are output. Cause:
enableOcrwas incorrectly set to globally enabled, without distinguishing between copyable text and scanned documents. - Phenomenon: When parsing Excel attachments, only data from the first sheet is returned, and content from other sheets is not extracted. Cause: Full-sheet parsing configuration for
parseExcelSheetswas not enabled. - Phenomenon: When importing PPT or DOC documents, the parsing result is empty or only contains a small amount of text. Cause: Multi-format parsing switches were not configured correctly, or the document contains unauthorized encrypted content.
How to verify correct configuration
- Upload a single-page aerospace research report PDF with embedded Excel, check if the parsing result includes table data from all sheets.
- Upload a scanned aerospace mission report containing original images, check if the returned result retains the original image links and does not include text generated by OCR.
- Upload a long document with more than 100 pages, verify that the parsing completion time does not exceed the configured timeout threshold.
- View parsing logs to confirm no error messages for parameter parsing failures or format recognition failures.
Question material comes from public community discussions. Configuration values are common starting points and should be measured against your own samples. Verified on 2026-09-14.