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July 30, 2026Short & citedBlog
Civic Viewpoint.
A quiet encyclopedia with a personal desk
Kept by Bryan McAllister — short guides, clear facts, and the Canadian angle when it matters.
How It Works • Aviation

CH-47 Chinook

The CH-47 Chinook is a tandem-rotor, twin-engine heavy-lift helicopter originally developed by Vertol and now manufactured by Boeing Defense, Space & Security.

Updated July 30, 20261 min readCited sources

The CH-47 Chinook is a tandem-rotor, twin-engine heavy-lift helicopter developed by Vertol (now Boeing). It first flew in 1961 and entered service in 1962, serving as a key transport and multi-mission platform.

What it is

The Chinook uses a tandem-rotor layout with two counter-rotating rotors, eliminating the need for a tail rotor. It is a heavy-lift helicopter used for troop transport, cargo lift, search and rescue, casualty evacuation, special operations, and disaster relief.

Why it matters

The Chinook is one of the heaviest-lifting Western helicopters. It serves as the U.S. Army's only heavy-lift cargo helicopter and is operated by 20 international operators. Its rear loading ramp and external-cargo hooks allow versatile internal and external load operations on unprepared terrain.

Key details

First flight was September 21, 1961, with service entry in 1962. Originally developed by Vertol, now manufactured by Boeing Defense, Space & Security. The CH-47F is the current U.S. Army variant, with ongoing Block II modernization. The name comes from the Chinook people of Oregon and Washington.

In short

  • Tandem-rotor design eliminates tail rotor for stability
  • Heavy-lift helicopter used by U.S. Army and 20 international operators
  • Multi-mission: transport, rescue, special ops, disaster relief
  • Name honours the Chinook people
Canadian angle

The CH-47 Chinook has relevance to Canada through international military aviation and disaster-response operations, and Chinook helicopters have also been discussed in Canadian defence and search-and-rescue contexts.

Quick questions

What is the CH-47 Chinook used for?
It is used for troop transport, cargo lift, search and rescue, casualty evacuation, special operations, and disaster relief.
Why does the Chinook have two rotors?
Its tandem-rotor design uses counter-rotating rotors, providing lift and stability without requiring a tail rotor.
When did the Chinook first fly?
The CH-47 Chinook first flew on September 21, 1961.

Sources

  1. Wikipedia — https://en.wikipedia.org/wiki/Boeing_CH-47_Chinook
    Supports: Tandem-rotor design, manufacturer history, meaning of name, heavy-lift role
  2. Boeing — https://www.boeing.com/defense/military-rotorcraft/h-47-chinook
    Supports: Current roles, international operators, multi-mission use
  3. U.S. Air Force — https://www.127wg.ang.af.mil/About-127th-Wing/Fact-Sheets/Article/3694458/army-ch-47-chinook-helicopter/
    Supports: CH-47F as Army's heavy-lift cargo helicopter, weights and lift capability
  4. Australian Army — https://www.army.gov.au/equipment/aviation/boeing-ch-47-chinook
    Supports: Top speed, tandem-rotor description, operational roles, rear ramp and cargo hooks
  5. GlobalMilitary.net — https://www.globalmilitary.net/aircraft/ch-47-chinook/
    Supports: First flight and service entry date
  6. Simple Flying — https://www.simpleflying.com/boeing-chinook-military-helicopter-facts-list/
    Supports: Development history and number of operators