Monthly Archive for November, 2010

First Aircraft Moves Into Udvar-Hazy Center Restoration Hangar

Helldiver

The "Helldiver" arrives at the Mary Baker Engen Restoration Hangar.

This week, the Museum moved its first aircraft into the Mary Baker Engen Restoration Hanger in the new wing of the Steven F. Udvar-Hazy Center in Chantilly, VA. The aircraft is the Curtiss SB2C Helldiver, the same type of aircraft flown by former Museum director, Don Engen during World War II. Designed in 1938 as a scout-bomber to replace the SB2U Vindicator dive-bomber, the SB2C Helldiver rolled off the assembly line in June 1942. Of the over 5,500 production models built, the Museum’s Helldiver is one of only a handful that remain in existence. It will be one of the first aircraft to be restored when the Mary Baker Engen Restoration Hanger is fully operational.

Helldiver

Helldiver

Staff move the "Helldiver" into the Mary Baker Engen Restoration Hangar.

The arrival of this first object is an important milestone for the Museum, and the timing couldn’t be better. As we celebrate the Thanksgiving holiday tomorrow, we at the Museum share this milestone and our gratitude with all of the people who have helped to make the new wing a reality.

staff

Staff along with members of the Engen family pose in front of the "Helldiver" inside the Udvar-Hazy Center's new Mary Baker Engen Restoration Hangar.

Although the Helldiver is the first to occupy the huge restoration hangar, and cannot yet be seen by the public, it will not be alone for long. The Museum will continue moving into the new wing over the coming year. The Helldiver and other objects will be visible to the public as they are restored to display condition when the viewing mezzanine opens later in 2011.

view

View from the mezzanine with the "Helldiver" on the restoration hangar floor below.

See the latest photos of the new wing and stay tuned for more information as we move into the new facility.

A New History of the Museum

Smithsonian National Air and Space Museum: An Autobiography

Smithsonian National Air and Space Museum: An Autobiography

Before the recent appearance of Smithsonian National Air and Space Museum: An Autobiography (National Geographic, 2010) the Museum had two big, coffee-table books about itself. In 1979 Abrams published C.D.B. Bryan’s The National Air and Space Museum, a gorgeous and very expensive book for the time ($75.00—you’d have to triple that to get to current dollars). It was organized by exhibit galleries, a very logical way to present the Museum, but one that quickly became dated. It got a second life with a new edition in 1988 reflecting the Museum’s floor plan then. To replace it, we published (in collaboration with Bulfinch) Andrew Chaikin’s Air and Space: The National Air and Space Museum Story of Flight in 1997. It was reissued in 2008, but it was already at the tail end of its sales life at that point.

It was in that latter year that Ted Maxwell, then Associate Director for Collections and Research, initiated a project to start a new book. He and publications officer Trish Graboske assembled a group of division chairs, curators and archivists to discuss how to do it. Contracting out the authorship, as was done with the first two books, had its advantages, but also meant that a significant fraction of the earnings did not go to the Museum. Although it put an added burden on the staff, we decided to write the next one in-house, and to make it a history of the Museum, not just a description of it, or a history of flight told with pictures from the Museum. Alex Spencer  (Aeronautics Division) and I (Space History Division) became the editors, the chapter authors would be Tom Crouch, Bob van der Linden, Dominick Pisano, Ted Maxwell and Dik Daso (all in Aeronautics, except Ted in the Center for Earth and Planetary Studies). Melissa Keiser and Marilyn Graskowiak (Archives Division) would do the photo editing. We were pleased when the National Geographic Society wanted to publish the book, and we were then paired with their team, led by Susan Hitchcock. The book came together in scarcely over a year from the time when we began to work on it in summer 2009.

Thaddeus Lowe

Thaddeus Lowe goes aloft aboard the balloon Intrepid to observe Confederate activity during the Battle of Fair Oaks, May 31-June 1, 1862.

For me, the stories and the pictures of the Museum’s prehistory became the most fascinating things that came out of the book. In Chapter 1, Tom Crouch lays out the connections between the first Smithsonian Secretary, Joseph Henry, and ballooning that went back a decade before the Institution was founded in 1846. In mid-1861, at the beginning of the Civil War, Henry lent support to Thaddeus Lowe , who was forming a balloon corps for the Union Army. That June Lowe made tethered ascents from the Mall directly in front of where the Museum now stands—a site that was then occupied by the Columbia Armory. Over fifty years later, another war, World War I, brought some of the first airplanes into the Smithsonian collections (the first was actually the 1909 Wright Military Flyer, acquired in 1911). Aircraft enthusiast Paul Garber began in 1920 as a junior curator and proceeded to build a world-class collection, as Bob van der Linden tells us in Chapter 2. Some of the book’s most interesting photos show the old Aircraft Building, or “Tin Shed,” behind the Castle that housed much of the collection. A few choice artifacts, like Lindbergh’s Spirit of St. Louis, which Garber had been instrumental in getting, hung in the Arts and Industries Building.

Tin Shed

Built in 1918, the Aircraft Building housed most of the Museum's aviation collection for decades. Taken in 1938, this photo also shows a tank and artillery piece displayed by the front door.

Spirit of St. Louis

Lindbergh's "Spirit of St. Louis" was installed in the North Hall of the Smithsonian Institution's Arts & Industries Building on May 13, 1928.

Congress legislated the National Air and Space Museum into existence in 1946 as the National Air Museum, thanks largely to Paul Garber and the Commanding General of the Army Air Forces, Henry A. “Hap” Arnold. But for some time little changed on the Mall except that the Tin Shed became more crowded. Garber had to create a makeshift storage location outside D.C., now named for him, to accommodate the massive increase in artifacts after World War II. They were often stored in deplorable conditions. In Chapter 3, Dom Pisano tells the story of the long struggle to get a building on the Mall, culminating in the spectacularly successful opening in July 1976. Many assume that that is when the National Air and Space Museum began, but as this book reveals, the organization was already three decades old then, and was built on a foundation of a previous century of Smithsonian involvement with flight.

Chapter 4 (by Ted Maxwell and Tom Crouch) and Chapter 5 (by Dik Daso) discuss the evolution of the Mall building after 1976, and of the creation of the Udvar-Hazy Center, respectively. These chapters were the most problematic to write, as the closer we got to the present, the more difficult it was to gain any perspective on events that many of us had personally experienced. Especially tough, of course, was deciding what to say about the B-29 Enola Gay, not only the 1994-95 national uproar over our proposed exhibit about the first atomic bombings, but also the previous half century in which the airplane was intertwined with the Museum’s history, and the following near-decade it took to complete the restoration and assembly of the full aircraft for the 2003 opening of the Museum’s companion facility, the Steven F. Udvar-Hazy Center.  In fact, this aircraft was one of the main reasons why we decided to have four “interchapter” features, telling decade-long stories that stretched across the boundaries of the five chapters. (In addition to the Enola Gay, these cover the Institution’s long controversy with the Wrights that delayed the arrival of the 1903 Flyer, rocket pioneer Robert Goddard’s intimate engagement with the Smithsonian, and the partnership between the Museum and NASA).

Enola Gay

The historic Boeing B-29 "Enola Gay" is shown here just after being restored and re-assembled in 2003.

When you add more than 700 photos, ten layouts of artifact collections, ten features on famous aircraft and artifacts, ten longer quotations from veterans and observers of the Museum, a foreword by John Glenn and an afterword by Director J.R. Dailey, we feel that we really have created not only a gorgeous gift book, but also a professional history of the Museum, one likely to last for many years to come.

Michael J. Neufeld is Chair of the Space History Division of the National Air and Space Museum.

View the Museum’s interactive timeline, featuring images from the book.

A Blending of Photography and X-Ray

While spacesuit curator Amanda Young and I were routinely working on photographing the space suits, she was telling me that after a series of test x-rays were taken of the smaller objects such as gloves, boots, and helmets, she wanted to have a whole spacesuit X-rayed. She asked my advice on how the radiologist, Roland “Ron” Cunningham at the Museum Support Center, could combine a lot of small sheets of X-ray film together into one big piece.

Apollo Boot

EVA overshoe from Apollo A7-L spacesuit

I asked what the largest film available for X-ray was, and found that it’s 14 inches by 17 inches. I made a suggestion that they get some four feet by eight feet foam core board, which is extremely light, strong, and stiff, and tape or tack with pins the unexposed film on the board. I also advised them to make sure they overlapped the film at least one inch so there will be no spaces in between any of the films.

Ron took my advice and set up on the foam core three sheets of film across and five sheets down (15 sheets total), which is roughly 50 inches by 70 inches. Then he laid the spacesuit on top of it. The X-ray machine was raised high enough to “zap” the entire suit. After the film had been exposed, it was processed and dried before being sent to me.

My job was to scan the X-ray films to create one digital image. First, I laid out the film on the light table like working with a puzzle, and made sure I lined them up correctly before I started the scanning. I used the Epson Expression 10000XL photo flatbed scanner with the transparency unit. The only problem I had is that the scanner can cover only 13 inches by 17 inches, and the films were 14 by 17. So I had to make two scans of each film by scanning at one end of the film, then rotating it 180 degrees to scan the other end. After I scanned all 15 sheets in this manner, I ended up with a total of 30 images.

With Photoshop, I opened all of the images and rotated 15 images to the right side up to match with other 15, then “stitched” them together with the “photomerge” application. Then I started by the row of three images of the head area, stitched them together, followed by the next three images of the chest, lower abdomen, legs, and finally the feet area. With five rows of images, I stitched them all together into one final image.

spacesuit

An x-ray of Alan Shepard’s Apollo 14 spacesuit allows curators and conservators to “see” inside space clothing—a task that had previously been done by peering through the neck or the wrist with a flashlight.

This process took most of my day but it was worth it after seeing such a gorgeous result. I am looking forward to doing the next one.

However, like many of us photographers who no longer use film to shoot images, radiologists are now using digital X-ray machines instead of film. They also have new software to put together sections of the larger object into one image without going through the tedious process I used. It seems to me that radiologists are becoming more like artists rather than scientists.

This image is now part of a book by Amanda Young and me called Spacesuits: The Smithsonian National Air and Space Museum Collection. The book chronicles the history of spacesuits from the first designs of the 1930s onward, and provides a behind-the-scenes look at these remarkable creations, including some that have never before been publicly displayed.

Mark Avino is chief of photographic services for the National Air and Space Museum.

Vintage Aircraft Tool Cataloging, Re-housing and Preservation Project

In the years following WWII the United States and her Allies conducted engineering and flight tests of many different types of captured or surrendered Axis aircraft, primarily from Germany and Japan. Many of these aircraft were acquired by Allied and US technical intelligence collection teams.  It was ordered that at least one of each type of enemy aircraft be captured and evaluated by these teams, and that each aircraft type be maintained in flyable condition for a minimum of one year. To make this possible all technical data and support materiel available (such as tool kits, parts, etc.) had to also be captured to meet this requirement.

fuselage

Fuselage of a captured German WWII FockeWulf Ta-152H-0 advanced fighter, currently stored at the Paul E. Garber Preservation, Restoration, and Storage Facility. This aircraft was surrendered to an RAF intelligence team and later transferred to the US for evaluation.

Several of these captured aircraft were donated to the National Air and Space Museum upon completion of US Air Force testing in the late 1940s and early 1950s, and much of the supporting parts and tools came along with them. At the time loose tools and toolkits were not seen as accessionable objects, merely as tools to be used for repair and possible future restoration purposes. They remained in storage for years. Today this collection of tools contains some of the very last examples of their kind to be found anywhere in the world. It is due to the historically important and unique nature of these objects that a Collections Care and Preservation Fund (CCPF) has enabled a project to catalog, re-house, and preserve these irreplaceable examples of tools and kits.

tools

One of several large crates filled with hundreds of loose tools of various types. Sorting these loose tools and beginning a comprehensive identification and inventory process has been the first priority of the 2010 CCPF Vintage Aircraft Tool project.

The  project began in July of 2010. The cataloging, condition assessment, and digital photography of this varied and unique collection was begun immediately so that a comprehensive inventory of this diverse collection could be created.

tools

Examples of sorted and inventoried tools. Upon identification it was discovered that these tools were highly specialized and potentially one-of-a-kind examples. The left tool was designed to cool large bearings with a cryogenic liquid to aid their removal during overhaul of a BMW 801 engine, like the one used to power the Focke Wulf FW-190. The right tool was designed to be used on the cylinder heads of several different types of Daimler-Benz engines, such as those used to power the He-219 Night Fighter currently being restored at the Paul E. Garber Preservation, Restoration, and Storage Facility.

One goal of the project is to create a curatorial and collections guideline for the proper and safe use of these tools, ensuring they remain in an accessible yet preserved condition. To ensure future access to restoration specialists and researchers, a series of protective storage cabinets will provide adequate space that maximizes accessibility yet minimizes unnecessary handling. This system of storage will also allow for easier transportation of the collection to the new Mary Baker Engen Restoration Hangar at the Steven F. Udvar-Hazy Center.

Additionally, it is necessary to prepare most of these tools for long-term, stable storage via thorough cleaning to remove old, soiled, or failing preservative coatings and service-related grime, and also treating areas of active surface corrosion. Once cleaned and treated each tool will then have a modern preservative coating reapplied, ensuring long-term stabilization and usability.

engines

Both engines above are from the He-219 Night Fighter being restored at the Paul E. Garber Preservation, Restoration, and Storage Facility. The left engine has already undergone restoration at the time this image was taken, while the right engine has yet to be restored. Being able to use or copy examples of purpose-built tools is important to restorers. If these necessary and unique tools are misplaced, damaged beyond usability or disappear, restoration is seriously hindered.

Copies of these tools have been made in the past to perform vital restoration work on some of the associated captured aircraft, and in some instances the tools themselves have been used. But once they are lost, then any similar restoration or stabilization work will be made much more difficult, if not impossible. This project will help ensure that these important objects are preserved.

Ray Barnett is a contractor working with the collections division of the National Air and Space Museum.

Restoring and Preserving Aircraft

Next year, the National Air and Space Museum will begin restoring and preserving aircraft in the brand-new Mary Baker Engen Restoration Hanger, part of the Phase Two complex now under construction at the Steven F. Udvar-Hazy Center.  To treat the aircraft, the Museum applies a philosophy and range of techniques that have steadily evolved through the years.  A project may start with an incomplete grouping of components or a complete aircraft in pieces, but most aircraft that pass through the Engen Restoration Hanger will be largely intact with worn exteriors that often hide extensive corrosion beneath fabric, wood, or metal skin.  The treatment team, consisting of curator, lead specialist, and conservator, must first decide on the overall objective of the work after discussing a range of options:

  • Stabilizing conservation that protects the aircraft from further loss or depletion.
  • Preservation that maintains the aircraft in unaltered condition.
  • Minimal structural, mechanical, and cosmetic restoration.
  • Significant structural and mechanical restoration with minor cosmetic restoration.
  • Restoration to a particular period.
  • Restoration to production specifications.

Whatever course is chosen, the primary goal is to maintain authenticity, what I define as tenacious, unwavering concentration on the original history, not just of the aircraft type  say all Piper Cubs, for example, but whenever possible, the specific Piper Cub airframe that is undergoing treatment.  The decision to jettison strict authenticity and adopt a paint scheme and markings never actually applied to the specific airframe during its operational history is widely regarded by curatorial and collections management staff as a choice of last resort.

Photographs, documents and text, scale models, film, and audio are all available to tell the history of almost all types of aircraft.  However, once gone, the original finish, condition, or configuration is forever lost.  Structural damage and original paint and markings contribute to the artifact as an original document with a story to tell, just like an ancient manuscript.  Of course, we must balance the ideal goal of pure preservation with practical requirements such as the safety of our visitors who often are in close proximity to the aircraft on display.

milestones

"Milestones of Flight" Gallery at the National Mall Building.

When selecting specific treatments, the project team selects those that can be undone later without damaging the artifact.  This allows future investigators to return that portion of the aircraft to the condition in which it was found for further study.

Treatment specialists  at the Museum combined restoration and preservation techniques when they prepared Bowlus BA-100 Baby Albatross for display at the Udvar-Hazy Center in 2000.  We had accepted the Baby Albatross in 1963 and suspended it in the rafters of Building 20 at the Paul E. Garber Facility for more than 35 years.

albatross

Albatross before restoration

The original fabric covering was beyond repair but the wooden airframe was in remarkably sound condition.  Specialists had to apply several patches to the Mahogany skin, which they stamped like this example:

label

Labels applied by Museum specialists

Such careful documentation of repairs or replaced parts goes back to the notion of the artifact as an original document.  The right aileron control rod was found bent and because the damage may have occurred in service, it was not repaired.  Original varnish on the wooden cockpit pod, wings and struts, elevators, and vertical fin was preserved by cleaning, polishing, and waxing.

Cockpit

Cockpit of the Albatross

Treatment specialists chose to cover parts of the wings and tail with a clear plastic film called Monokote (favored by enthusiasts of radio-controlled model aircraft) because it allowed visitors to see the delicate internal wood structure, the film was easy to apply using a hot air gun, and it is reversible.

wing

Wing of the Albatross

The cockpit was in excellent condition so the specialists thoroughly but gently vacuumed it out, cleaned the area with mild Ivory Liquid dish soap and water.

albatross

Inside the Cockpit of the Albatross

The specialists wanted to preserve the colorful rudder fabric painted red, white, and blue with yellow stars.  Once cleaned and gently vacuumed, they found it in sound condition except for a long tear, which they repaired with Monokote.  They did not repair a small puncture near the right wingtip because it may have occurred while flying the sailplane, and the hole threatened neither visitor safety nor the integrity of the artifact.

albatross

Albatross rudder

Preservation can be just as difficult to carry out as restoration, but the results are no less attractive.

albatross

Bowlus BA-100 Albatross after restoration

Russ Lee is a curator in the Aeronautics Division of the National Air and Space Museum.

Sources

White, John H. “Facadism: Is This Really Preservation?,” Locomotive & Railway Preservation, July/August 1988, 33.

McManus, Edward. “A Restoration Philosophy,” in Collections Care, Report Number 2, (Smithsonian Institution, October 1991).

Mikesh, Robert C. Restoring Museum Aircraft, (Shrewsbury, England: Airlife, 1997). Outdated in a few respects but basically excellent.

Milbrooke, Anne. National Register Bulletin: Guidelines for Evaluating and Documenting Historic Aviation Properties, (U. S. Dept. of the Interior, 1998).