Travis AIr Force Base Heritage Center









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Indoor Exhibits - Collections












The Jimmy Doolittle Air and Space Museum Foundation and the Travis Heritage Center have an extremely interesting and wide variety of collections. Our weapons, engines, aircraft nose art, models, original photographs, aviation sculptures, military coins and uniforms are a delight to any craftsmen’s or artisans’ eye. The following represents an example of our holdings:

Armament: AGM-28 Hound Dog Missile

AGM-28 Hound Dog
AGM-28 Hound Dog

The North American AGM-28 Hound Dog was the first air-launched nuclear stand-off missile deployed by the United States.


The development of the nuclear stand-off missile was initiated by the USAF in 1956. Initially known as Weapon System 131B, it was intended to give Strategic Air Command heavy bombers the ability to attack Soviet targets from outside enemy airspace. The first powered flight of the prototype missile, designated XGAM-77, was made in April 1959. The missile's engine, airframe, and warhead were straightforward adaptations of existing technology, so the weapon's development period was quite short, and the production GAM-77 entered operational service in December 1959. It received the popular name Hound Dog, apparently inspired by the contemporary hit song by Elvis Presley.

Hound Dog was essentially an unpiloted jet airplane with small delta wings and forward canards. It was powered by a single Pratt & Whitney J-52-P-3 turbojet in a ventral pod beneath the rear fuselage, with 7,500 lbf (33 kN) thrust. It used inertial navigation for guidance, with heading updates provided by astro-trackers mounted in the launch pylon. The W28 warhead (the same as the B28 nuclear bomb) had an explosive yield of 1.1 megatons. The missile's maximum range was about 700 miles (1,100 km).

The Hound Dog was carried by B-52 Stratofortress bombers; the B-52D, B-52G and B-52H were fitted with provision for the large under-wing pylons to launch the weapons, each bomber normally carrying one under each wing. The Hound Dog's fuel tanks, interestingly, could be topped up from the B-52's own fuel supply, and before launch its engines could be used as auxiliary booster engines for the bomber. The missile's inertial navigation system (INS) could be used as a backup system for determining the aircraft's position after the initial calibration and "leveling" which took a minimum of 90 minutes.

The GAM-77 was subsequently upgraded to GAM-77A standard, with improved astro-trackers now mounted in the missile, rather than the pylon, a radar altimeter, and larger fuel capacity. The upgrade made possible several different altitude profiles, such as high altitude launch/high altitude cruise (high/high) or high altitude launch/high altitude cruise followed by a descent to terrain following cruise (high/high/low). Other options were high/low, low/high, low/low and low/high/low.

In June 1963 the GAM-77 and GAM-77A were redesignated AGM-28A and AGM-28B, respectively. An updated AGM-28C, with improved guidance, was proposed in the early 1970s, but never built.

A total of about 700 Hound Dogs were produced. They were intended to be replaced by the AGM-48 Skybolt, which did not enter service. The last Hound Dogs were retired in 1976.


  • Length: 12.95 m (42 ft 6 in)
  • Wingspan: 3.66 m (12 ft)
  • Diameter: 0.71 m (28 in)
  • Launch weight: 4,500 kg (10,000 lb)
  • Speed: Mach 2.1
  • Ceiling: 16,800 m (55,000 ft)
  • Maximum range: 1,100 km (700 miles)
  • Guidance: inertial: with astro-tracker heading correction
  • CEP: 13,000 feet
  • Warhead: W-28 thermonuclear (1.1 MT)

Hound Dog Restoration Crew
Hound Dog Restoration Crew

The Heritage Center’s Hound Dog restoration team members pictured in the photo carried out the initial inspection and assessment of the dog. They are, left to right, Lloyd Brunsen, Dave Stone, Mike Frankhouser, Neil Wood, and Gene Hollingsworth.

Continue with Armament: PB4Y-2 Bow Turret (Model Number 250SH-3)



History of Travis AFB








Basic Trainers
   BT-13 “Valiant”
   T-37 Simulator
   F-100 Cockpit Trainer








Early Years
   Wright Brothers








World War I
   94th Aero Squadron
   Stars and Stripes








Inter War Years
   Spirit of St. Louis
   Cessna AT-17 Bobcat








World War II
   Flying Tigers
   “The Hump”
   Piper L-4 “Grasshopper”
   CG-4 Combat Glider
   Tuskegee Airmen
   Doolittle Raid
   “Fat Man” Nuclear Bomb








Cold War
   Berlin Airlift
   The “Candy Bomber”
   Candy Bomber Honored








Korean War
   Korean War Gallery
   Korean War: “In Field”
   Korean War: “On Base”
   Korean War Stories
   Truman’s Secret Visit
   Flying Cheetahs
   Rescue Mission
   SAC Air Crews
   Travis Crash
   Operation Starlift








Vietnam War
   Vietnam Exhibit
   The Nurses
   Bringing Them Home
   Operation Homecoming








Modern Flight
   Strategic Airlift
   C-141 “Starlifter”
   Lockheed C-5 “Galaxy”
   Aerial Refueling








Space Exploration
   Aerojet General XLR73
   Mercury Spacecraft
   Project Gemini








Humanitarian Missions
   Stinson L-5 “Sentinel”
   EMEDS Unit
   Operation Babylift








   AGM-28 Hound Dog Missile
   PB4Y-2 Bow Turret
   Engine: R-2600-13
   Nose Art
   Military Coins
   Military Uniform Collection












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