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H-21 Shawnee vs Westland Whirlwind

H-21 Shawnee vs Westland Whirlwind at a glance — top speed 204 vs 175 km/h, range 426 vs 538 km, max takeoff weight 6,895 vs 3,538 kg, built 707 vs 364 units.

Piasecki H-21 Shawnee military helicopters side profile drawing
🇺🇸 H-21 Shawnee
Westland Whirlwind military helicopters side profile drawing
🇬🇧 Westland Whirlwind
Specifications
H-21 Shawnee Westland Whirlwind
Origin country 🇺🇸 United States 🇬🇧 United Kingdom
Category Military Helicopters Military Helicopters
Manufacturer Piasecki Westland
First flight 11 April 1952 --
Year introduced -- 1954
Number produced 707 units 364 units
Average unit price -- --
Wing area 282.5 m² 204.9 m²
Wingspan 13.4 m 16.2 m
Height 4.8 m 4.8 m
Length 16.0 m 12.7 m
Maximum speed 204 km/h 175 km/h
Operational range 426 km 538 km
Service ceiling 2,880 m 3,962 m
Max. takeoff weight 6,895 kg 3,538 kg
Empty weight 4,060 kg 2,718 kg
Total thrust 1 x 1,063 kW 1 x 560 kW
Performance Radar Chart
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Frequently Asked Questions

Which is faster, the H-21 Shawnee or Westland Whirlwind?
The H-21 Shawnee is faster with a maximum speed of 204 km/h compared to the Westland Whirlwind's 175 km/h, a difference of 29 km/h.
Which has longer range, the H-21 Shawnee or Westland Whirlwind?
The Westland Whirlwind has a longer range at 538 km compared to the H-21 Shawnee's 426 km.
Which can fly higher, the H-21 Shawnee or Westland Whirlwind?
The Westland Whirlwind has a higher service ceiling at 3,962 meters (12,998 ft) compared to the H-21 Shawnee's 2,880 meters (9,448 ft).
Which is heavier, the H-21 Shawnee or Westland Whirlwind?
The H-21 Shawnee has a higher maximum takeoff weight at 6,895 kg compared to the Westland Whirlwind's 3,538 kg.
Which is larger, the H-21 Shawnee or Westland Whirlwind?
The H-21 Shawnee is longer at 16.0 meters compared to the Westland Whirlwind's 12.7 meters.
Which has been built in greater numbers, the H-21 Shawnee or Westland Whirlwind?
The H-21 Shawnee has been produced in greater numbers with 707 units compared to 364 units of the Westland Whirlwind.