# Polar Satellite Launch Vehicle-DL

> model of the Indian Polar Satellite Launch Vehicle

**Wikidata**: [Q65559630](https://www.wikidata.org/wiki/Q65559630)  
**Source**: https://4ort.xyz/entity/polar-satellite-launch-vehicle-dl

## Summary
Polar Satellite Launch Vehicle-DL (PSLV-DL) is a specific configuration of India’s Polar Satellite Launch Vehicle, an expendable rocket developed and operated by the Indian Space Research Organisation (ISRO). It belongs to the PSLV family used to place satellites—especially Earth-observation and scientific payloads—into polar and sun-synchronous orbits.

## Key Facts
- Sub-class of: Polar Satellite Launch Vehicle (PSLV) expendable launch system
- Operator & manufacturer: Indian Space Research Organisation (ISRO)
- Country of origin: India
- Also known as: PSLV-DL
- Instance of: rocket model
- Notable payloads launched: XPoSat (Indian space telescope), Microsat-R (Indian military reconnaissance sat), Amazônia-1 (Brazilian Earth-observation sat), EOS-01, LacunaSat-2 (Lithuanian small sat)

## FAQs
### Q: What does the “DL” in PSLV-DL stand for?
A: “DL” denotes a distinct structural/strap-on configuration within the PSLV series; ISRO uses suffixes (DL, CA, XL, etc.) to identify each version’s boosters and payload capacity.

### Q: Who builds and flies the PSLV-DL?
A: The Indian Space Research Organisation both manufactures and operates every PSLV-DL vehicle, launching from Indian spaceports such as Sriharikota.

### Q: What kinds of satellites has PSLV-DL carried?
A: Flights have orbited India’s XPoSat astrophysics mission, Microsat-R reconnaissance platform, EOS-01 radar-imaging satellite, Brazil’s Amazônia-1 environmental satellite, and Lithuania’s LacunaSat-2 cubesat, among others.

## Why It Matters
PSLV-DL extends the proven PSLV architecture, giving ISRO a modular, cost-controlled option for lofting mixed payloads—everything from small university cubesats to mid-size national spacecraft—into precise polar orbits. By fielding multiple PSLV variants, India can match booster count and propellant load to mission need, keeping launch costs low for domestic programs and attracting international customers seeking reliable rides. The variant’s successful service record (evidenced by payloads such as XPoSat and Amazônia-1) reinforces India’s reputation for dependable, schedule-certain access to space and supports global Earth-observation constellations, technology-demonstration missions, and scientific instruments that underpin climate monitoring, disaster response, and security applications worldwide.

## Notable For
- Member of ISRO’s highly reliable PSLV lineage, which has logged dozens of consecutive successful flights
- Flown with diverse international payloads, demonstrating India’s commercial launch competitiveness
- Supports polar and sun-synchronous orbits prized by Earth-observation satellites
- Uses a standardized, modular design that shortens integration time for multi-satellite missions

## Body
### Design & Variants
PSLV-DL is one of several standardized configurations within the Polar Satellite Launch Vehicle family. ISRO designates each version by its booster arrangement:
- CA (“Core Alone”) – no strap-ons
- DL – two strap-on motors
- XL – six strap-ons with larger boosters
- QL – four strap-ons

The DL variant thus carries two solid rocket boosters, augmenting thrust while retaining the core’s liquid fourth stage for precise orbit insertion.

### Launch Record & Payloads
Although specific flight dates are not supplied in the source material, payloads already linked to PSLV-DL include:
- XPoSat (Indian X-ray polarimetry telescope)
- Microsat-R (Indian military reconnaissance)
- EOS-01 (Indian radar Earth-observation)
- Amazônia-1 (Brazilian environmental satellite)
- LacunaSat-2 (Lithuanian technology demonstrator)

The diversity—national security, scientific, commercial, and educational satellites—illustrates PSLV-DL’s flexibility.

### Operational Role
ISRO markets PSLV-DL for missions requiring moderate lift capacity to polar or sun-synchronous orbits. Its modular count of strap-ons lets engineers dial performance to match spacecraft mass, optimizing cost and schedule. Because PSLV has amassed one of the industry’s highest success rates, customers ranging from emerging space nations to established Earth-observation operators book the DL variant when schedule assurance and orbital accuracy are paramount.

## Schema Markup
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  "@type": "Thing",
  "name": "Polar Satellite Launch Vehicle-DL",
  "alternateName": "PSLV-DL",
  "description": "A configuration of India's Polar Satellite Launch Vehicle, developed and operated by ISRO for launching satellites into polar orbits.",
  "sameAs": ["https://www.wikidata.org/wiki/Q104873834"],
  "additionalType": "Rocket Model"
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