Here’s why the CH-37 Mojave is (probably) the worst military helicopter ever made

The empty weight of the CH-37 was 20,800 pounds and the maximum takeoff weight was 31,000 pounds. This gave a useful load of just over 10,000 pounds. The useful load does not factor in fuel so that number is actually reduced further by how far/long the helicopter needs to fly…

Designed to fulfill a 1950 Marine Corps requirement for a series of large transport helicopters, for a decade the CH-37 Mojave held the distinction of being the largest helicopter flying outside the Soviet Union.

The CH-37 prototype first flew in 1953 and entered service in 1956 with the US Army and US Marine Corps.

‘Helicopters in the mid 1950s and prior were powered by piston engines because jet engines were still fairly new and really only applied to new fighter aircraft,’ says Tyler Monson, an aviation expert on Quora. ‘These piston engines were originally designed for WWII bombers and fighters and were large and heavy to provide as much power as possible. While other helicopters of the 1950s were powered by a single piston engine placed in the nose, the CH-37 was designed with twin piston engines mounted in pods beside the fuselage.

‘The transport and heavy lift mission of the CH-37 meant that lots of internal space was needed within the helicopter for personnel and any cargo that would not be slung beneath on a cable. The cockpit was raised at the front of the aircraft and the nose below it opened into the large cabin via clamshell doors and a loading ramp.

‘Now you can understand why the CH-37 looks the way it does. But simply being ugly does not make a bad helicopter, so what was the problem?

‘It was just too underpowered. Its two 18 cylinder Pratt & Whitney R-2800 Double Wasp engines put out 2100 horsepower each. That sounds like a lot because it is. These engines were very powerful but also very heavy. Each one weighed 2360 pounds alone which gave a power to weight ratio of 0.89.’

He continues;

‘The empty weight of the helicopter was 20,800 pounds and the maximum takeoff weight was 31,000 pounds. This gave a useful load of just over 10,000 pounds. The useful load does not factor in fuel so that number is actually reduced further by how far/long the helicopter needs to fly. Now you can see why the CH-37 proved underwhelming.


‘By 1959 the first turboshaft engine helicopters, such as the famous UH-1 Huey, entered production. These turboshafts were much smaller than their piston counterparts and with much better power to weight ratios. Now turbine helicopters (such as the HH-3, CH-46, CH-47, CH-54 and CH-53) were being produced that exceeded the CH-37 in nearly every stat. Speed, maximum takeoff weight and useful load, range, altitude, and size. These helicopters served alongside the relatively small numbers of CH-37s in Vietnam and in the late 1960s the CH-37 was retired completely. 

The CH-53, for comparison to the CH-37 is as follows.

‘Entered service in 1966 with the US Navy and US Marine Corps. Powered by two General Electric turboshafts producing 3,925 horse power each and a power to weight ratio of 5.5. An empty weight of 23,600 pounds and a maximum takeoff weight of 42,000 pounds giving a useful load of 18,400 pounds. The CH-53 could fly faster, higher, and further than the CH-37 and quickly took over in the Marine’s heavy lift and transport duties.’

Monson concludes;

‘As for the few Mojaves left in Vietnam, they found a niche as a recovery helicopter, salvaging downed aircraft and equipment from the field.

‘After its retirement it was either scrapped or found homes in museums and as static displays. It never found a career in the civilian world like the H-19 and H-34 did because it was just too large and too expensive. It might not be the absolute worst helicopter put into production but the timing of its introduction sure highlighted its deficiencies.’

Photo credit: U.S. Navy and U.S. Army

This print is available in multiple sizes from AircraftProfilePrints.com – CLICK HERE TO GET YOURS. CH-46E Sea Knight HMM-161 Grayhawks, YR02 / 154841
Dario Leone

Dario Leone is an aviation, defense and military writer. He is the Founder and Editor of “The Aviation Geek Club” one of the world’s most read military aviation blogs. His writing has appeared in The National Interest and other news media. He has reported from Europe and flown Super Puma and Cougar helicopters with the Swiss Air Force.

Recent Posts

US Navy Flight Instructor explains why cross training an experienced Ukrainian fighter pilot on the F-16 could likely take longer than anticipated

Ukrainian Air Force F-16 fighter jet American-made F-16 fighters will arrive in Ukraine this summer: in… Read More

2 hours ago

B-58 navigator recalls doing more bomb runs than anyone in the Hustler on one mission, being on nuclear alert during Cuban Missile Crisis

The B-58 Hustler The US Air Force’s first operational supersonic bomber, the B-58 made its initial flight… Read More

2 hours ago

The ringmaster’s Grand Finale: Legendary German Ace Adolf Galland recalls his last combat mission

Legendary German Ace Adolf Galland By far the best-known of Germany’s World War II fighter… Read More

1 day ago

Impressive video shows 509th Bomb Wing and 131st Bomb Wing performing mass fly-off of 12 B-2 Spirit bombers

Mass fly-off of 12 B-2 stealth bombers Filmed on Apr. 15, 2024 15 at Whiteman… Read More

1 day ago

Alligator blocks USAF KC-135 Stratotanker, fights with FWC Officers at MacDill AFB

Alligator blocks KC-135 Stratotanker Taken on Apr. 22, 2024 the curious photos in this post… Read More

2 days ago