Space Technology Comparison

Chandrayaan-2 vs Chandrayaan-3: Key Improvements & Upgrades

How ISRO Engineered Success for Lunar South Pole Landing

Compare Chandrayaan-2 and Chandrayaan-3 lander design, hazards detection sensors, thruster configurations, landing velocity tolerances, and mission achievements.

Detailed Technical Comparison Matrix

Specification / Feature	Chandrayaan-2	Chandrayaan-3: Key Improvements & Upgrades
Primary Mission Result	Orbiter successful; Lander hard-landed in 2019	Historical Soft Landing at Lunar South Pole (Aug 23, 2023)
Lander Thrusters	5 engines (4 corner + 1 central engine)	4 corner engines (Central engine eliminated for stability)
Landing Legs Structure	Standard shock absorbers (max 2 m/s velocity)	Reinforced titanium legs (max 3 m/s velocity tolerance)
Fuel & Sensor redundancy	Standard fuel tank capacity	Increased fuel capacity & extra hazard avoidance sensors
Landing Zone Dimensions	Target area 500m × 500m	Expanded landing area 4 km × 2.4 km

Frequently Asked Questions

Why did Chandrayaan-3 succeed where Chandrayaan-2 failed?

ISRO implemented failure-based design in Chandrayaan-3 with strengthened landing legs, increased fuel reserves, broader touchdown parameters, and extra Doppler velocity sensors.

Detailed Technical Comparison Matrix

Specification / Feature

Chandrayaan-2

Chandrayaan-3: Key Improvements & Upgrades

Primary Mission Result

Orbiter successful; Lander hard-landed in 2019

Historical Soft Landing at Lunar South Pole (Aug 23, 2023)

Lander Thrusters

5 engines (4 corner + 1 central engine)

4 corner engines (Central engine eliminated for stability)

Landing Legs Structure

Standard shock absorbers (max 2 m/s velocity)

Reinforced titanium legs (max 3 m/s velocity tolerance)

Fuel & Sensor redundancy

Standard fuel tank capacity

Increased fuel capacity & extra hazard avoidance sensors

Landing Zone Dimensions

Target area 500m × 500m

Expanded landing area 4 km × 2.4 km

Back to Dashboard

Space Technology Comparison

Chandrayaan-2 vs Chandrayaan-3: Key Improvements & Upgrades

How ISRO Engineered Success for Lunar South Pole Landing

Compare Chandrayaan-2 and Chandrayaan-3 lander design, hazards detection sensors, thruster configurations, landing velocity tolerances, and mission achievements.

Detailed Technical Comparison Matrix

Specification / Feature	Chandrayaan-2	Chandrayaan-3: Key Improvements & Upgrades
Primary Mission Result	Orbiter successful; Lander hard-landed in 2019	Historical Soft Landing at Lunar South Pole (Aug 23, 2023)
Lander Thrusters	5 engines (4 corner + 1 central engine)	4 corner engines (Central engine eliminated for stability)
Landing Legs Structure	Standard shock absorbers (max 2 m/s velocity)	Reinforced titanium legs (max 3 m/s velocity tolerance)
Fuel & Sensor redundancy	Standard fuel tank capacity	Increased fuel capacity & extra hazard avoidance sensors
Landing Zone Dimensions	Target area 500m × 500m	Expanded landing area 4 km × 2.4 km

Frequently Asked Questions

Why did Chandrayaan-3 succeed where Chandrayaan-2 failed?

ISRO implemented failure-based design in Chandrayaan-3 with strengthened landing legs, increased fuel reserves, broader touchdown parameters, and extra Doppler velocity sensors.