Plans for the Little Known Confederate Helicopter

As my colleague Dr. Tom Crouch referenced in a previous post, our nation is currently in the midst of commemorating the 150th Anniversary of the American Civil War (or sesquicentennial for you Latin fans).  While other branches of the Smithsonian, such as the National Museum of American History and National Portrait gallery, have a wide depth of artifacts and images with which they can share stories from the time period, the National Air and Space Museum has far fewer relevant items in its collection.  We do, however, have some of the most surprising Civil War artifacts in the entire Institution.  Not only does the Museum preserve Thaddeus Lowe’s “double telescope,” but the Museum’s Archives Department preserves a set of drawings containing plans for the most marvelous of contraptions – the Confederate helicopter.

The American Civil War brought about great advances in the use of technology in warfare.  Balloons, railroads, ironclad ships, and even a submarine were demonstrated throughout the conflict, and new ideas were constantly being thought up and tried on the battlefield.  Some ideas were more exotic than others, such as the one thought of by William C. Powers.  In 1862, most of the ports of the Southern states were completely blockaded by Union naval forces, choking off much needed supplies and commerce.  William C. Powers was an architectural engineer living in Mobile, Alabama, and personally saw the effects of the Northern blockade.  Powers knew that the southern states did not have enough ships to break the blockade with naval power, and going through the blockade was full of risks.  William Powers saw another way to crush the blockade – attack it from the air. 

Using his engineering skills, Powers began drafting plans for a machine that could lift off and propel itself through the air to attack Union ships.  Although balloons were being effectively used for observation, they lacked directional control and could not lift enough weight to make an effective bomber.  Powers drew upon the work of other famous engineers, such as Archimedes and da Vinci, and employed Archimedean screws for lift and thrust, all powered by a steam engine.  The engine was located in the middle of the craft, and used two smokestacks, which can be seen in the drawings.  Two Archimedean screws on the sides gave the helicopter forward thrust, similar to how a propeller works on a ship in water, and two mounted vertically in the helicopter gave it lift.  A rudder was added to the rear of the craft in order to provide steering.  The drawings below show these Archimedean screws represented by the snaking line that runs across the page.

 

Archimedean screws

Side View drawing showing the longitudinal and vertical Archimedean screws and central location of smoke stacks. Source: Smithsonian National Air and Space Museum Archives (NASM-A-34450-E).

 

experimental aircraft drawing

Drawing of the side view of the car and vertical shafting showing details of the steam engine including the boiler, cylinder, and crankshaft. Source: National Air and Space Museum Archives (NASM-A-34450-C).

 

After drafting his plans, Powers set out to make a small model and then a full-size mockup.  Although he had some success creating the small model, as can be seen below, limited resources and lack of support prevented the idea from ever leaving the drawing board.  Family lore also says that fear prevented the idea from getting off the ground.  When the drawings were donated to the Museum, family members stated that they were hidden during the war to prevent them from falling into Union hands.  It was said that a full size example was never created for fear that it would be captured by the Union, mass produced, and used to rain destruction on the Confederate armies and cities throughout the South. 

 

Civil War Helicopter

Three quarter view of the experimental model built by William C. Powers. Source: National Air and Space Museum Archives (NASM-A-34342-A).

 

Although the laws of aerodynamics were not on the side of William C. Powers or his helicopter, they do reveal an interesting aspect of the technological advances which came about as a result of the Civil War.  Powers even stumbles upon a building method which would be resurrected later on to manufacture airships and even bombers.In the drawing shown below, it is clear that the “hull” of the Powers aircraft would have been constructed using a lattice approach, similar to that used in the British Vickers Wellington Bomber.  This provides incredible strength without adding lots of weight.Perhaps Mr. Powers was just ahead of his time….

British Vickers Wellington Bomber

Drawing of the sectional view showing the mesh lattice construction, similar to the British Vickers Wellington Bomber. Source: National Air and Space Museum Archives (NASM-A-34449-D).

Tom Paone is a museum specialist in the Aeronautics Department of the National Air and Space Museum.

Enter the Santa Copter

Santa Gets a Lift

Santa Gets a Lift. Image number: NASM-2A49392

The good girls and boys of the Coast Guard Air Station Brooklyn get a visit from Santa, December 1944. Santa’s getting a lift on a Coast Guard HNS-1, the naval version of the Sikorsky R-4, the first helicopter to see active service with the U.S. armed forces.

We’ve mentioned St. Nick’s interest in non-reindeer powered transportation concepts here during previous Christmas seasons. Hoping that Santa makes a timely delivery to your home via copter, blimp, balloon, or the good old-fashion sleigh, the staff and volunteers of the National Air and Space Museum wish that all of our readers, visitors and friends have a fine holiday season.

Allan Janus is a museum specialist in the National Air and Space Museum’s Archives Division.

Ike and the First Presidential Helicopters

On July 12, 1957, Dwight D. Eisenhower became the first president to employ a helicopter while in office. Though helicopters had been in operational use by the American military since 1944, concerns over their safety caused the Secret Service to bar their use for the nation’s chief executive except in case of emergency. However, by 1956, the nuclear capability of the Soviet Union had reached the point where any evacuation of the president by roads could not be guaranteed and the head of President Eisenhower’s flight section, Air Force Col. William Draper, began shopping for helicopters.

Bell H-13J

Major Barrett departs the White House with President Eisenhower on July 12, 1957 for Camp David. White House Photo.

The Secret Service insisted on safety as the deciding factor in the selection process and much more capable models were bypassed in favor of Bell’s Ranger (military designation H-13J). It could accommodate only two passengers with any real degree of comfort, had an effective range of a mere 150 miles and was somewhat slow, with a top speed of around 100 miles per hour. It was also a single pilot aircraft, unlike the larger military models, which must have generated some concerns over the potential incapacitation of the pilot. Essentially a civilian off-the-shelf model that was an evolution of the bubble-topped Model 47s of Korean War fame, Bell marketed the Ranger principally for VIP travel.

Bell H-13J

Dwight D. Eisenhower became the first U.S. president to fly aboard a helicopter in this U.S. Air Force H-13J on July 12, 1957.

The Ranger did have some significant advantages. Its base purchase price of $40,000 and low operating costs made it one of the most economical helicopters in its class, but most importantly, it had an outstanding safety record and was the most reliable design available. As part of the Model 47 series (the first civil certificated helicopter in the world), it had a decade of operational use behind its design. Bell’s trademark “teetering” rotor system accounted for much of its sterling safety record. The much larger and more capable Sikorsky and Vertol designs employed complex articulated rotor systems incorporating hinges and other components with additional points of failure and increased maintenance concerns. They also utilized WWII-era radial engines that were more prone to fires and other failures.

The H-13J’s interior featured upgraded upholstery, but was nonetheless plain by presidential standards. The most obvious upgrade was the addition of a dark blue tinted Plexiglas bubble in place of the standard transparent installation to reduce its tendency to act like a magnifying glass in the sun. Otherwise, the only substantive improvements over standard models were military radios and a rotor-brake to reduce the shutdown time and allowing the president a more rapid exit (a helicopter rotor is most dangerous to pedestrians as it slows).

Heli Cockpit

Though not as comfortable as succeeding presidential helicopters, the president never had a better view.

On May 31, Maj. Joseph E. Barrett (perhaps the most accomplished helicopter pilot in the Air Force) landed a helicopter for the first time on the South Lawn of the White House, though this was not the first time a rotary wing aircraft had landed there. Twenty-six years earlier, James Ray touched down on the grounds in a Pitcairn-Cierva PCA-2 autogiro as part of an award ceremony. In 1911, Harry Atwood had landed there in his Wright Model B airplane as part of a similar event.

At 2:08 p.m. on July 12, Major Barrett lifted off in H-13J serial number 57-2729 [now on display at the Steven F. Udvar-Hazy Center] with Eisenhower sitting in the right rear and James Rowley, chief of the White House Secret Service detail sitting to his left. Cummings flew 57-2828 in trail with Maj. Gen. Howard Snyder, Ike’s personal physician and a second Secret Service agent. Barrett then proceeded to their undisclosed evacuation site (Camp David) at an altitude of 500-700 feet above the terrain.

In addition to the H-13Js, six larger helicopters descended on the Ellipse to airlift twenty key staffers and pool reporters. These included tandem-rotor Vertol H-21s of the Air Force and Army, as well as a Marine Corps HUS-1 and an obsolescent Air Force H-19. Naval personnel created an ad-hoc air traffic control center on the South Lawn to marshal the arriving whirlybirds. Virgil Olson, who later became the first official Marine Corps presidential helicopter pilot, recalled that the other larger and faster helicopters supporting Operation Alert, which had departed after the H-13J, “arrived several minutes before the small [and slower] Bell. When the president arrived, he was sweating from an uncomfortable ride and annoyed to find us on the ground, with the engines of our helicopter already off and cooled down.” After spending the night at Camp David, Eisenhower drove with family members to Gettysburg, but flew back to Washington in the H-13J on Monday morning with another stopover at the Camp David “command post.”

Army H-34C and Marine HUS-1

Army H-34C of the Executive Flight Detachment and Marine HUS-1 of HMX-1 awaiting departure with the president, summer, 1958.

Eisenhower’s next helicopter flight occurred on September 6, 1957 when he hitched a ride on a Marine HUS-1, which he found to be a vast improvement over the H-13J. Between the lackluster performance of the diminutive Ranger relative to the larger military transport helicopter and getting baked under the Bell’s bubble, Eisenhower ordered Draper to switch to the new model, which was not operated by the Air Force, previously the sole aerial purveyor of the president. Not wanting to show preference for either the Marine Corps or Army who did operate it, Ike alternated flights between the two services’ special flight detachments, a tradition that continued to the Ford administration, which eliminated the Army’s Executive Flight Detachment as a cost-cutting measure. Eisenhower’s embrace of air transport, including helicopters, forever changed how America’s chief executive conducts the nation’s business.

Roger Connor is a curator in the Aeronautics Division of the National Air and Space Museum.