Daily Archives: September 8, 2017

8 September 2001

Special Air Mission 27000, a Boeing VC-137C, 72-7000, on final approach for landing.

8 September 2001: Special Air Mission 27000, a Boeing VC-137C, serial number 72-7000, served as an airborne office and transport for seven United States presidents over 29 years. It made its last flight from Andrews Air Force Base, Maryland to San Bernardino International Airport, California, where technicians from Boeing disassembled the aircraft and transported it in sections to the Ronald Reagan Presidential Library and Museum at Simi Valley, California. It was reassembled and is on display inside the Air Force One Pavilion.

Aboard for its final flight were Secretary of the Air Force James G. Roche, Vice Chief of Staff Lieutenant General Lance W. Lord, U.S. Air Force, and former First Lady of the United States, Nancy Reagan.

The VC-137C was a specially built Model 707-353B four-engine jet airliner. Known by the call sign Air Force One when the President is aboard, it otherwise is referred to as Special Air Mission 27000. Its sister ship, 72-6000, is at the National Museum of the United States Air Force, where it recently was returned to display after renovation.

Boeing VC-137C 72-7000 on display at the Air Force One Pavilion, Ronald Reagan Presidential Library and Museum, Simi Valley, California. (Wikipedia)

© 2015, Bryan R. Swopes

Facebooktwittergoogle_plusredditpinterestlinkedinmailby feather

8 September 1954

Albert Scott Crossfield, NACA Test Pilot. (LIFE Magazine via Jet Pilot Overseas)
Albert Scott Crossfield, NACA Test Pilot. (Allan Grant/LIFE Magazine via Jet Pilot Overseas)

8 September 1954: Scott Crossfield, a NACA Aeronautical Research Pilot at the High Speed Flight Station, Edwards Air Force Base, California, took the North American Aviation F-100A-5-NA Super Sabre, 52-5778, on its first NACA test flight—and his first flight in an F-100.

Tests of the prototype and early production Super Sabres revealed directional stability problems, a very dangerous inertia coupling characteristic that could cause the aircraft to go violently out of control (and which would result in the death of North American’s chief test pilot, George Welch, in just another three weeks). The highly swept wings could stall at high angles of attack, causing the airplane to pitch up in the deadly “Sabre dance”. NACA wanted to explore the causes of these aerodynamic problems and design solutions.

Scott Crossfield pre-flights a North American Aviation F-100A Super Sabre. Note the extended leading-edge "slats". (LIFE Magazine via Jet Pilot Overseas.)
Scott Crossfield pre-flights a North American Aviation F-100A Super Sabre. Note the extended leading-edge “slats”. (Allan Grant/LIFE Magazine via Jet Pilot Overseas.)

During the flight there was an engine fire warning and Crossfield shut down the Pratt & Whitney J57-P-7 turbojet engine. The F-100A had no flaps and North American’s own test pilots did not think a “dead stick” landing was possible due the very high landing speed required.

Scott Crossfield signs the maintenance forms for an F-100, certifying the airplane ready for flight. (LIFE Magazine via Jet Pilot Overseas)
Scott Crossfield signs the maintenance forms for an F-100, certifying the airplane ready for flight. (Allan Grant/LIFE Magazine via Jet Pilot Overseas)

Scott Crossfield tells the story in his autobiography:

. . . As a matter of fact, North American tests pilots were then flipping coins to see who would bring an F-100 in dead-stick to fulfill a requirement of the Air Force acceptance tests. I was not concerned. Dead-stick landings in low L-over-D [Lift-over-Drag] airplanes were my specialty. Every test pilot develops a strong point. I was certain that my talent lay in dead-stick landings.

With the engine idling and generating no energy to the plane’s systems, I was running out of hydraulic pressure to operate the controls. Following the handbook instructions, I pulled a lever which extended a miniature “windmill” into the slipstream. This “windmill” churned, building up pressure in the hydraulic lines. Unknown to me, there was a major leak in the line. The windmill was not helping, but hurting me. It was pumping hydraulic fluid overboard as fast as it could turn.

Scott Crossfield climbs into the cockpit of a North American Aviation F-100A-5-NA Super Sabre. (LIFE Magazine via Jet Pilot Overseas)
Scott Crossfield climbs into the cockpit of a North American Aviation F-100A-5-NA Super Sabre. (Allan Grant/LIFE Magazine via Jet Pilot Overseas)

I called Edwards tower and declared an emergency. All airborne planes in the vicinity of the base were warned away from the lake area. I held the ailing F-100 on course, dropping swiftly, following the glide path that I used for the dead-stick Skyrocket. [Douglas D-558-II Skyrocket] I flared out and touched down smoothly. It was one of the best landings I have ever made, in fact. Seconds later, while the F-100 was rolling out, the remaining bit of hydraulic pressure in the control lines drained out and the controls froze.

I then proceeded to violate a cardinal rule of aviation: never try tricks with a compromised airplane. The F-100 was still rolling at a fast clip, coming up fast on the NACA ramp, when I made my poor decision. I had already achieved the exceptional, now I would end it with a flourish, a spectacular wind-up. I would snake the stricken F-100 right up the ramp and bring it to a stop immediately in front of the NACA hangar. This trick, which I had performed so often in the Skyrocket, was a fine touch. After the first successful dead-stick landing in an F-100, it would be fitting.

Instrument panel of a North American Aviation F-100 Super Sabre. (U.S. Air Force)
Instrument panel of a North American Aviation F-100 Super Sabre. The fire warning light and hydraulic pressure gauge are at the upper right corner. (U.S. Air Force)

According to the F-100 handbook, the hydraulic brake system—a separate hydraulic system from the controls—was good for three “cycles,” engine out. This means three pumps on the brake, and that proved exactly right. The F-100 was moving at about fifteen miles an hour when I turned up the ramp. I hit the brakes once, twice, three times. The plane slowed, but not quite enough. I was still inching ahead ponderously, like a diesel locomotive. I hit the brakes a fourth time—and my foot went clear to the floorboards. The hydraulic fluid was exhausted. The F-100 rolled on, straight between the yawning hangar doors!

The good Lord was watching over me—partially anyhow. The NACA hangar was then crowded with expensive research tools—the Skyrocket, all the X-1 series, the X-3, X-4 and X-5. Yet somehow, my plane, refusing to halt, squeezed by them all and bored steadily on toward the side wall of the hangar.


The nose of the F-100 crunched through the corrugated aluminum, punching out an eight-inch steel I-beam. I was lucky. Had the nose bopped three feet to the left or right, the results could have been catastrophic. Hitting to the right, I would have set off the hangar fire-deluge system, flooding the hangar with 50,000 barrels of water and ruining all the expensive airplanes. Hitting to the left, I would have dislodged a 25-ton hangar-door counterweight, bringing it down on the F-100 cockpit, and doubtless ruining Crossfield.

Chuck Yeager never let me forget the incident. He drew many laughs at congregations of pilots by opening his talk: “Well, the sonic wall was mine. The hangar wall was Crossfield’s.” That’s the way it was at Edwards. Hero one minute, bum the next. That I was the first pilot to land an F-100 dead-stick successfully, and memorized elaborate and complete instrument data on the engine failure besides, was soon forgotten.

The F-100 is a tough bird. Within a month NACA’s plane was flying again, with Crossfield back at the helm. In the next few weeks I flew forty-five grueling flights in the airplane, pushing it to the limits, precisely defining the roll coupling. (On one flight the coupling was so severe that it cracked a vertebra in my neck.) These data confirmed, in actual flight, the need for a new F-100 tail, which North American was planning to install on later models of the airplane.

Every night after landing, I taxied the F-100 slowly to the NACA ramp. At the bottom, placed there on orders of Walt Williams, there was a large new sign, symbolic of the new atmosphere at Edwards. It said:

PLEASE COME TO A COMPLETE STOP BEFORE TAXIING UP RAMP 

Always Another Dawn, The Story Of A Rocket Test Pilot, by A. Scott Crossfield with Clay Blair, Jr., The World Publishing Company, Cleveland and New York, 1960. Chapter 20 at Pages 196–199.

North American F-100A-5-NA Super Sabre parked on Rogers Dry Lake, 1959. It had been repaired and returned to service after running through the NACA hangar wall at Edwards AFB, 8 September 1954. In 1960, FW-778 was retired to Davis-Monthan AFB, Tucson, AZ. (NASA)
North American Aviation F-100A-5-NA Super Sabre 52-5778 parked on Rogers Dry Lake, 1959. It had been repaired and returned to service after running through the NACA hangar wall at Edwards AFB, 8 September 1954. In 1960, FW-778 was retired to Davis-Monthan AFB, Tucson, AZ. (NASA)
North American Aviation F-100A-5-NA Super Sabre 52-5778. (NASA)
North American Aviation F-100A-5-NA Super Sabre 52-5778. (NASA)
North American Aviation F-100A-5-NA Super Sabre 52-5778. (NASA)
North American Aviation F-100A-5-NA Super Sabre 52-5778. (NASA)
North American Aviation F-100A-5-NA Super Sabre 52-5778 parked on the ramp in front of the NACA hangar, Edwards Air Force Base, California, 1959. (NASA)
North American Aviation F-100A-5-NA Super Sabre 52-5778 parked on the ramp in front of the NACA hangar, Edwards Air Force Base, California, 1959. (NASA)
NACA High Speed Flight Station, 24 August 1954. The Boeing P2B-1S Superfortress is parked at the northeast corner of the ramp. (NASA DFRC
E54-1361)

© 2017, Bryan R. Swopes

Facebooktwittergoogle_plusredditpinterestlinkedinmailby feather

8 September 1944

V-2 crater at Staveley Road, 8 September 1944. (Daily Mail)
V-2 crater at Staveley Road, 8 September 1944. (Daily Mail)
The first V-2 rocket to hit London impacted in Staveley Road at 18:40:52, 8 September 1944, killing 3 persons and injuring 17 others.
The first V-2 rocket to hit London impacted in Staveley Road at 18:40:52, 8 September 1944, killing 3 persons and injuring 17 others.

8 September 1944: At 18:40:52 hours, the first of 1,358 V-2 rockets hit London, impacting in Staveley Road, Chiswick, “opposite No. 5.”

The warhead detonated and caused extensive damage to the residential area. A crater 20 feet (6.1 meters) deep was in the center of the road and the gas and water mains were  destroyed.

This V-2 rocket was fired by Gruppe Nord, Battery 2./485, located at the crossroads of Lijsterlaan and Schouwweg, in the suburb of Wassenar, The Hague, Netherlands.

Three people were killed: a 67-year-old woman, a 3-year-old child and a soldier home on leave. 17 others were injured.

11 homes were demolished, 12 seriously damaged and unusable, and 556 suffered slight or minor damage. 14 families had to be relocated.

A V-2 rocket is being raised to a vertical position for firing.
A V-2 rocket is being raised to a vertical position for firing.

The V2, or Vergeltungswaffen 2 (also known as the A4, or Aggregat 4) was a ballistic missile with an empty weight of approximately 10,000 pounds (4,536 kilograms) and weighing 28,000 pounds (12,700 kilograms), fully loaded. It carried a 738 kilogram (1,627 pound) (sources vary) explosive warhead of amatol, a mixture of TNT and ammonium nitrate. The propellant was a 75/25 mixture of of ethanol and water with liquid oxygen as an oxidizer.

1280px-esquema_de_la_v-2The complete rocket was 14.036 meters (46.050 feet) long, and had a maximum diameter of 1.651 meters (5.417 feet). The rocket was stabilized by four large fins, 4.035 meters (13.238 feet) long, with a maximum span of  3.564 meters (11.693 feet). The leading edge of these fins was swept 60°, and 3°. A small guide vane was at the outer tip of each fin, and other vanes were placed in the engine’s exhaust plume.

V-2 launch site.
V-2 launch site.

When launched, the rocket engine burned for 65 seconds, accelerating the rocket to 3,580 miles per hour (5,760 kilometers per hour) on a ballistic trajectory. The maximum range of the rocket was 200 miles (320 kilometers) with a peak altitude between 88 and 128 miles, depending on the desired range. On impact, the rocket was falling at 1,790 miles per hour (2,880 kilometers per hour), about Mach 2.35, so its approach would have been completely silent in the target area.

The V-2 could only hit a general area and was not militarily effective. Germany used it against England, France, The Netherlands and Belgium as a terror weapon. More than 3,200 V-2 rockets were launched against these countries.

V-2 rockets on mobile launchers being prepared for firing. (Bildarchiv Preussischer Kulturbesitz)

© 2016, Bryan R. Swopes

Facebooktwittergoogle_plusredditpinterestlinkedinmailby feather