Aero Spacelines Pregnant Guppy

Last updated
Pregnant Guppy
Pregnant Guppy NASA.jpg
The Pregnant Guppy at the Dryden Flight Research Center for testing and evaluation (October 1962)
Role Outsize cargo freight aircraft
Manufacturer Aero Spacelines
First flightSeptember 19, 1962 [1]
Retired1979
StatusScrapped at Van Nuys in 1979
Primary users Aero Spacelines
NASA
Produced1
Developed from Boeing 377 Stratocruiser
Developed into Aero Spacelines Super Guppy

The Aero Spacelines Pregnant Guppy was a large, wide-bodied cargo aircraft built in the United States and used for ferrying outsized cargo items, most notably components of NASA's Apollo program. [1] The Pregnant Guppy was the first of the Guppy line of aircraft produced by Aero Spacelines. [1] The design inspired later designs, such as the jet-powered Airbus Beluga and Boeing Dreamlifter.

Contents

Development

In 1960, NASA was using barges to transport increasingly large rocket components from manufacturers on the West Coast to test and launch sites on the East Coast, a method that was slow and expensive. Meanwhile, U.S. airlines were disposing of their obsolete piston-engined Boeing 377 Stratocruisers in favor of the newer jet-engined airliners. Aircraft broker Leo Mansdorf was stockpiling surplus Stratocruisers at Van Nuys for resale.

Ex-USAF pilot John M. Conroy realized that these aircraft could be modified to transport the large but relatively light rocket components. [1] Conroy presented his plans for an extensively modified Stratocruiser to NASA, where an official commented that the bloated aircraft resembled a pregnant guppy. Although NASA was lukewarm on the concept, Conroy mortgaged his house and founded Aero Spacelines International to build and operate the concept aircraft. [1]

Conversion work was undertaken by On Mark Engineering. The Pregnant Guppy (registered N1024V) [2] used an ex-Pan Am airframe. A 5-meter section from an ex-British Overseas Airways Corporation aircraft (G-AKGJ) was added immediately behind the wing. A new upper fuselage of 6-meter diameter was added, giving the aircraft a "triple-bubble" appearance when viewed from the front. The entire rear section, including tail surfaces, was detachable to allow cargo to be loaded directly into the fuselage. The wing, engines, tail, nose, and cockpit were unchanged.

The aircraft first flew on September 19, 1962, piloted by Conroy and co-pilot Clay Lacy. [3] When Van Nuys traffic control realized that Conroy intended to take off, they notified police and fire departments to be on alert. However, the huge aircraft performed flawlessly. It differed in handling from a Stratocruiser only in a slight decrease in speed caused by the drag of the larger fuselage.

The Guppy delivered the S-IV Saturn I rocket stage three weeks faster than a barge, [4] for a cost of $16.00 (equivalent to $150.97 today) per mile (1.6 km). [5]

Operational history

The Pregnant Guppy, with its tail removed, is loaded with a S-IV stage (1965) SaturnSIV.jpg
The Pregnant Guppy, with its tail removed, is loaded with a S-IV stage (1965)

In the summer of 1963, the Pregnant Guppy began flying NASA cargo. Among its early duties was transporting the first and second stages of the Gemini program's Titan II from the Martin Co. in Baltimore, Maryland, to Cape Canaveral. As the space program grew through the late 1960s, it became apparent that the one original aircraft clearly could not handle the whole transport load, so 25 more Stratocruisers and ex-USAF C-97s were purchased to construct four Super Guppy aircraft, which were even longer and larger than the original.

The various Guppy aircraft served throughout the 1960s, 1970s, and beyond. After the Apollo program ended, the aircraft transported airliner sections. [1] The original Pregnant Guppy, though, was in poor condition by this point and retired soon after the end of the Apollo program.

The Pregnant Guppy was sold to American Jet Industries in 1974 and registered N126AJ. Although plans were floated to renovate the transport and return it to service, in the end it was scrapped at Van Nuys Airport in 1979. The rear fuselage and tail assembly, along with various other parts, were used to build the final Super Guppy Turbine. Registered N941NA, this aircraft is currently in service with NASA and is the last Guppy aircraft still in operation. [6]

Specifications (B377PG Pregnant Guppy)

Data fromJane's All The Worlds Aircraft 1965–66, [7] Jane's All The Worlds Aircraft 1971–72 [8]

General characteristics

Performance

See also

Related development

Related Research Articles

<span class="mw-page-title-main">Airbus Beluga</span> Outsize cargo version of the A300-600 airliner

The Airbus A300-600ST, or Beluga, is a specialised wide-body airliner used to transport aircraft parts and outsize cargoes. It received the official name of Super Transporter early on, but its nickname, after the beluga whale, which it resembles, gained popularity and has since been officially adopted.

<span class="mw-page-title-main">Saunders-Roe Princess</span> Type of aircraft

The Saunders-Roe SR.45 Princess was a British flying boat aircraft developed and built by Saunders-Roe at their Cowes facility on the Isle of Wight. It has the distinction of being the largest all-metal flying boat to have ever been constructed.

<span class="mw-page-title-main">Saturn I SA-5</span> Apollo program test launch

Saturn-Apollo 5 (SA-5) was the first launch of the Block II Saturn I rocket and was part of the Apollo program. In 1963, President Kennedy identified this launch as the one which would place US lift capability ahead of the Soviets, after being behind for more than six years since Sputnik.

<span class="mw-page-title-main">Aero Spacelines Super Guppy</span> Turboprop conversion and enlarged version of outsize cargo carrier Pregnant Guppy

The Aero Spacelines Super Guppy is a large, wide-bodied cargo aircraft that is used for hauling outsize cargo components. It was the successor to the Pregnant Guppy, the first of the Guppy aircraft produced by Aero Spacelines. Five were built in two variants, both of which were colloquially referred to as the "Super Guppy".

<span class="mw-page-title-main">Aero Spacelines</span> 1960s aircraft manufacturer in the United States

Aero Spacelines Inc. was an American aircraft manufacturer from 1960 to 1968 that converted Boeing 377 Stratocruisers into the famous Guppy line of airplanes, re-engineered to transport oversized cargo such as space exploration vehicles.

<span class="mw-page-title-main">Aero Spacelines Mini Guppy</span> Wide-bodied cargo aircraft

The Aero Spacelines Mini Guppy was a large, wide-bodied, American cargo aircraft used for aerial transport of outsized cargo components. The Mini Guppy is one of the Guppy line of aircraft produced by Aero Spacelines.

<span class="mw-page-title-main">Boeing 377 Stratocruiser</span> US airliner with 4 piston engines, 1947

The Boeing 377 Stratocruiser was a large long-range airliner developed from the C-97 Stratofreighter military transport, itself a derivative of the B-29 Superfortress. The Stratocruiser's first flight was on July 8, 1947. Its design was advanced for its day; its relatively innovative features included two passenger decks and a pressurized cabin. It could carry up to 100 passengers on the main deck plus 14 in the lower deck lounge; typical seating was for 63 or 84 passengers or 28 berthed and five seated passengers.

<span class="mw-page-title-main">Boeing C-97 Stratofreighter</span> Long-range heavy military cargo aircraft built 1944-1952

The Boeing C-97 Stratofreighter was a long-range heavy military cargo aircraft developed from the B-29 and B-50 bombers. Design work began in 1942, the first of three prototype XC-97s flew on 9 November 1944 and the first of six service-test YC-97s flew on 11 March 1947. All nine were based on the 24ST alloy structure and Wright R-3350 engines of the B-29, but with a larger-diameter fuselage upper lobe and they had the B-29 vertical tail with the gunner's position blanked off. The first of three heavily revised YC-97A incorporating the re-engineered wing, taller vertical tail and larger Pratt & Whitney R-4360 engines of the B-50 bomber, flew on 28 January 1948 and was the basis of the subsequent sole YC-97B, all production C-97s, KC-97s and civilian Stratocruiser aircraft. Between 1944 and 1958, 888 C-97s in several versions were built, 811 being KC-97 tankers. C-97s served in the Berlin Airlift, the Korean War, and the Vietnam War. Some aircraft served as flying command posts for the Strategic Air Command, while others were modified for use in Aerospace Rescue and Recovery Squadrons (ARRS).

<span class="mw-page-title-main">Cargo aircraft</span> Aircraft configured specifically to transport cargo

A cargo aircraft is a fixed-wing aircraft that is designed or converted for the carriage of cargo rather than passengers. Such aircraft generally feature one or more large doors for loading cargo. Passenger amenities are removed or not installed, although there are usually basic comfort facilities for the crew such as a galley, lavatory, and bunks in larger planes. Freighters may be operated by civil passenger or cargo airlines, by private individuals, or by government agencies of individual countries such as the armed forces.

<span class="mw-page-title-main">Consolidated R2Y</span> 1940s American prototype military airliner

The Consolidated R2Y "Liberator Liner" was an airliner derivative of the B-24 Liberator built for the United States Navy by Consolidated Aircraft.

<span class="mw-page-title-main">Canadair CL-44</span> Canadian airliner with 4 turboprop engines (1950s-60s)

The Canadair CL-44 was a Canadian turboprop airliner and cargo aircraft based on the Bristol Britannia that was developed and produced by Canadair in the late 1950s and early 1960s. Although innovative, only a small number of the aircraft were produced for the Royal Canadian Air Force (RCAF), and for commercial operators worldwide.

<span class="mw-page-title-main">Boeing KC-97 Stratofreighter</span> 1951–1978 American strategic tanker aircraft

The Boeing KC-97 Stratofreighter is a four-engined, piston-powered United States strategic tanker aircraft based on the Boeing C-97 Stratofreighter. It replaced the KB-29 and was succeeded by the Boeing KC-135 Stratotanker.

<span class="mw-page-title-main">Conroy Skymonster</span> Canadian cargo airliner conversion with 4 turboprop engines, 1969

The Conroy Skymonster (CL-44-0) is a 1960s United States specialized cargo aircraft based on the Canadair CL-44 freighter, with an outsize fuselage.

<span class="mw-page-title-main">Boeing Dreamlifter</span> Outsize cargo conversion of the 747–400

The Boeing Dreamlifter, officially the 747-400 Large Cargo Freighter (LCF), is a wide-body cargo aircraft modified extensively from the Boeing 747-400 airliner. With a volume of 65,000 cubic feet (1,840 m3) it can hold three times that of a 747-400F freighter. The outsized aircraft was designed to transport Boeing 787 Dreamliner parts between Italy, Japan, and the U.S., but has also flown medical supplies during the COVID-19 pandemic.

<span class="mw-page-title-main">On Mark Engineering</span>

On Mark Engineering was an American aircraft remanufacturing company established in 1954 at Van Nuys Airport in California. Its most significant products were rebuilding military surplus A-26 Invaders into executive transports—the Marketeer with an unpressurized fuselage and the Marksman with fuselage pressurization. On Mark converted a single B-26 into the YB-26K Prototype. After successful tests, that prototype was reconfigured with 39 other planes into the B-26K Counter-Invaders for counterinsurgency missions with the US Air Force. A total of 40 of the planes were produced. On Mark also undertook conversion work of a Boeing 377 Stratocruiser into the prototype Pregnant Guppy for Aero Spacelines.

Douglas Aircraft's SASSTO, short for "Saturn Application Single Stage to Orbit", was a single-stage-to-orbit (SSTO) reusable launch system designed by Philip Bono's team in 1967. SASSTO was a study in minimalist designs, a launcher with the specific intent of repeatedly placing a Gemini capsule in orbit for the lowest possible cost. The SASSTO booster was based on the layout of the S-IVB upper stage from the Saturn family, modified with a plug nozzle. Although the SASSTO design was never followed up at Douglas, it is widely referred to in newer studies for SSTO launchers, notably the MBB "Beta" design, which was largely an updated version of SASSTO.

<span class="mw-page-title-main">John M. Conroy</span> American aviation executive (1920–1979)

John Michael Conroy was an American aviator and later businessman, whose company Aero Spacelines developed the Pregnant Guppy, Super Guppy, and Mini Guppy cargo aircraft. He later founded Conroy Aircraft and Specialized Aircraft in Santa Barbara, California.

<span class="mw-page-title-main">Conroy Virtus</span> Proposed American large transport aircraft intended to carry the Space Shuttle

The Conroy Virtus was a proposed American large transport aircraft intended to carry the Space Shuttle. Designed, beginning in 1974, by John M. Conroy of the Turbo-Three Corporation, it was to incorporate a pair of Boeing B-52 Stratofortress fuselages to form a new craft using existing parts for cost-savings. While the project was seriously considered, it proved impractically large and NASA chose to develop the Boeing 747–based Shuttle Carrier from surplus commercial aircraft instead.

<span class="mw-page-title-main">Outsize cargo</span> Cargo transported by outsize cargo transport methods

Outsize cargo is a designation given to goods of unusually large size. This term is often applied to cargo which cannot fit on standardized transport devices such as skids (pallets) or containers. This includes military and other vehicles.

The Tupolev Tu-404 was a wide-body superjumbo blended wing jet airliner proposed by Russian aerospace company Tupolev.

References

  1. 1 2 3 4 5 6 Taylor, Michael J.H. . “ Jane's Encyclopedia of Aviation. Studio Editions. London. 1989. ISBN   0-517-69186-8
  2. B-377 PREGNANT GUPPY AIRPLANE, NASA/Glenn Research Center, 1965-09-15, retrieved 2020-02-21
  3. "All About Guppys".
  4. Bilstein, Roger E. (1996). Stages to Saturn: A Technological History of the Apollo/Saturn Launch Vehicles. The NASA History Series. National Aeronautics and Space Administration, NASA History Office. pp. 313–319. SP-4206. Archived from the original on 2004-10-15. Retrieved 2010-05-03.
  5. "Saturn Transportation Equipment". Stages to Saturn. NASA. Retrieved 2014-01-20.
  6. Dean, William Patrick (2018). Ultra=Large Aircraft, 1940-1970: The Development of Guppy and Expanded Fuselage Transports. pp. 186–187.
  7. Taylor, John W. R., ed. (1965). Jane's All the World's Aircraft 1965–66. London: Sampson Low, Marston & Company, Ltd.
  8. Taylor, John W. R., ed. (1971). Jane's All the World's Aircraft 1971–72 (62nd ed.). London: Sampson Low, Marston & Company. p. 218. ISBN   9780354000949.
  9. Lednicer, David. "The Incomplete Guide to Airfoil Usage". m-selig.ae.illinois.edu. Retrieved 16 April 2019.

Works cited