Skip to main content Smithsonian Institution

Search Results

Collections Search Center
24 documents - page 1 of 2

Sense and avoid in UAS : research and applications / edited by Plamen Angelov

Author:
Angelov, Plamen P  Search this
Physical description:
1 online resource (xxxiii, 345 pages) : illustrations, portraits
Type:
Electronic resources
Electronic books
Date:
2012
Topic:
Airplanes--Collision avoidance  Search this
Drone aircraft--Control systems  Search this
TRANSPORTATION--Aviation--General  Search this
Call number:
TL696.C6 S46 2012 (Internet)
Data Source:
Smithsonian Libraries
EDAN-URL:
edanmdm:siris_sil_1131303

Cooperative path planning of unmanned aerial vehicles / Antonios Tsourdos, Brian White, Madhavan Shanmugavel

Author:
Tsourdos, Antonios  Search this
Author:
White, Brian 1947 June 6-  Search this
Shanmugavel, Madhavan  Search this
Physical description:
1 online resource xix, 190 pages) : illustrations
Type:
Electronic resources
Electronic books
Date:
2011
Topic:
Drone aircraft--Automatic control  Search this
Guidance systems (Flight)  Search this
Airplanes--Piloting--Mathematics  Search this
Airplanes--Piloting--Planning  Search this
Airways--Mathematical models  Search this
TRANSPORTATION--Aviation--Piloting & Flight Instruction  Search this
Call number:
TL589.4 .T78 2011 (Internet)
Data Source:
Smithsonian Libraries
EDAN-URL:
edanmdm:siris_sil_1128543

National Company (NATCO) Atomic Clocks Records

Creator:
Bagnall, James  Search this
Orensberg, Arthur  Search this
NATCO, Inc. (National Company, Inc.)  Search this
Mainberger, Walter  Search this
Lerner, Louis C.  Search this
Holloway, Joseph  Search this
Grant, Eugene  Search this
George, James  Search this
Daly, Richard Timothy, Jr.  Search this
Bovarnick, Michael  Search this
Extent:
5.5 Cubic feet (16 boxes, 3 oversize folders)
Type:
Collection descriptions
Archival materials
Blueprints
Technical drawings
Reports
Manuals
Photographs
Date:
1955 - 1968
Summary:
The records document the development of the first commercial atomic clocks by the National Company, Inc., (NATCO) of Malden, Massachusetts, a company known for producing specialized electronic equipment. The records include blueprints, technical drawings and schematics, technical and research reports, instruction manuals, photographs, and marketing materials.
Scope and Contents:
The National Company (NATCO) Atomic Clocks Records, 1955-1968, documents the development of the first commercial atomic clocks. Materials were generated by the National Company, Inc. (NATCO) of Malden, Massachusetts which produced the clocks under contract for military branches of the U.S. government and also marketed them on a retail basis. The collection consists of blueprints, technical drawings and schematics, technical and research reports, instruction manuals, photographs, marketing materials, and a stock offering prospectus for NATCO. If one blueprint, drawing or parts list had two or more models listed, it is included under the first model cited.

Series 1, National Company, Inc., (NATCO), 1957-1959, consists of a stock offering prospectus, 1959, which describes the organization of NATCO, its executives and Board of Directors, financial condition, and products. Located in this series is a bound volume of photographs which accompanied NATCO's contract bids. This volume contains photographs of a state-of-the-art machine shop and electronics laboratory of the late 1950s and early 1960s. A blueprint for a radio receiver— the product on which NATCO had built its reputation—is here.

Series 2, Atomichrons, 1955-1968, contains blueprints, original technical drawings and schematics, instruction manuals for setup and operation, technical and research reports, photographs and marketing materials arranged by Atomichron model from the National Atomic Frequency System (NAFS) prototype through the NC3701 and NC3702. The NC1001, the first commercial atomic clock, is fully documented. Technical Memoranda and proposals (TM-) related to particular models have been included with them. Other Technical Memoranda and proposals are in Series 3, Components, 1955-1957, and Series 5, Technical Memoranda and Reports, 1956-1957.

Series 3, Components, 1955-1967, contains materials related to the development of NATCo's Cesium Beam Tube and other parts of the Atomichrons. It includes Technical Memoranda (TM-), blueprints and original drawings, original notes and computations, parts lists, and photographs. Also included in this series is material related to the Production Engineering Measure (PEM), 1962-1967. This was a piece of equipment designed and built by NATCO to measure the accuracy of each Cesium Beam Tube as it was produced.

Series 4, Collision Avoidance System, 1962-1967, consists of material related to James J. Bagnall's patented Collision Avoidance System, using the Cesium Beam Frequency Standard. It includes his research report, the patent assigned to NATCO, and proposals and reports from NATCO representatives to Air Transportation Association conferences and meetings for 1967.

Series 5, Technical Memoranda and Reports, 1956-1967, consists of bound and numbered (TM-) technical memoranda. These are research reports and proposals for future research or products. Other technical memoranda are in Series 2, Atomichrons and Series 3, Components, 1955-1967.

Series 6, Reprints from Massachusetts Institute of Technology (MIT), 1953-1955, contains a bound volume of reprinted or photocopied papers which document research developments in Cesium Beam Frequency Standards at the time NATCO was establishing itself as a commercial producer.
Arrangement:
The collection is arranged into six series.

Series 1: National Company, Inc., (NATCO), 1957-1959

Series 2: Atomichrons, 1955-1968

Subseries 2.1, National Atomic Frequency System (NAF), 1956

Subseries 2.2, NC1001, 1955-circa 1959

Subseries 2.3, NC1001, Polaris, 1956-1958

Subseries 2.4, NC2001, Militarized, 1956-1961

Subseries 2.5, NC3001, Airborne, 1956-1961

Subseries 2.6, NC1200, 1959

Subseries 2.7, Missileborne Atomichron, 1959-1960

Subseries 2,8, NC1501, 1958-1964

Subseries 2.9, NC1601, Economy, 1958-1964

Subseries 2.10, Tactical Frequency Standard Drawings, 1959

Subseries 2.11, Tri-Service CBFS, circa 1965

Subseries 2.12, NC3501, circa 1965, 1967

Subseries 2.13, NC3601, Aerospace, circa 1965

Subseries 2.14, NC3701, Commercial, 1964-1968

Series 3: Components, 1955-1967

Series 4: Collision Avoidance System, 1962-1967

Series 5: Technical Memoranda and Reports, 1956-1967

Series 6: Reprints from MIT, 1953-1955
Biographical / Historical:
An atomic clock is a cesium-based frequency standard. It operates by exposing cesium atoms to microwaves at one end of their resonant frequencies and then counting their corresponding cycles as a measure of time. In 1955, Louis Essen of Britain's National Physical Laboratory and William Markowitz of the U.S. Naval Observatory collaborated to produce the first measurement of what is now called the atomic second. In 1967, the 13th general Conference of Weights and Measures formally redefined the atomic second as 9,192,631,770. The atomic second became the internationally accepted unit of time. Atomic clocks are the most accurate of all clocks. The first clock in 1949 was based on the microwave resonances of the ammonia molecule. It was patented by Harold Lyons and Benjamin F. Husten. The first commercial atomic clocks were developed at the Massachusetts Institute of Technology (MIT) Research Laboratory of Electronics under J.R. Zacharias, a protégé of I.I. Rabi's, circa 1955-1956 and were manufactured by the National Company, Inc. (NATCO) of Malden, Massachussets. NATCO, founded in 1914, was a well-respected company known for producing specialized electronic equipment in short runs. Prototype clocks bore the working name National Atomic Frequency Standard (NAFS). When the first commercial product was unveiled on October 3, 1956, it bore the trade name "Atomichron" and the model number NC-1001. Between 1956 and 1960, fifty Atomichrons were made and sold to military agencies, government agencies, and universities. Nine other models followed with refinements in size, portability and accuracy. The most radical design departure began with the NC3001 when the beam tube was placed in the horizontal position. Prices ranged from $10,000 to $50,000.

Patents covering NATCO's frequency standards include: 2,960,663, 2,972,115, 2,991,389, 3,258,713, 3,305,290. In 1965, James J. Bagnall was assigned patent 3,167,772 for a Collision Avoidance System to NATCO. It never reached production.

Although supported by research contracts by all three military branches, especially the Army Signal Corps, NATCO failed to achieve a lasting profitability. It was liquidated, and its patents were acquired by Frequency Electronics in 1969.

Sources

1. PEM Drawing C43767, 1967, PEM Drawings (C38037-C43767), 1964-1967, Series 3, Components, 1955-1967, Atomic Clock Collection, Archives Center, Smithsonian Institution National Museum of American History.

2. Forman, Paul. "Atomichron: The Atomic Clock from Concept to Commercial Product," in Proceedings of the IEEE, vol. 73, p. 1181-1204, 1985.
Related Materials:
Materials at the National Museum of American History

Artifacts related to this collection are located in the Division of Work and Industry.

Materials at Other Organizations

Materials related to MIT staff and departments who were involved in NATCO's Atomic Clock projects also can be found in the Historical Collections at the MIT Museum (http://web.mit.edu/museum/) and in the Institute Archives and Special Collections (http://libraries.mit.edu/archives/) of the MIT Libraries in Cambridge, Mass.
Provenance:
Materials in this collection were donated to the Division of Electricity and Modern Physics by Louis C. Lerner in December 1984. The bulk of the blueprints were purchased from Robert Reeves in August, 1991.
Restrictions:
The collection is open for research use.
Rights:
Collection items available for reproduction, but the Archives Center makes no guarantees concerning copyright restrictions. Other intellectual property rights may apply. Archives Center cost-recovery and use fees may apply when requesting reproductions.
Topic:
Atomic clocks  Search this
Airplanes -- Collision avoidance -- 1950-1970  Search this
United States -- Air defenses -- Military -- 1950-1970  Search this
Inventions -- 1950-2000  Search this
Frequency standards -- 1950-1970  Search this
Cold War -- 1950-1970  Search this
Clocks and watches -- 1950-1970  Search this
Military-industrial complex -- Massachusetts -- Cambridge  Search this
Patents -- 1950-1970  Search this
Genre/Form:
Blueprints -- 20th century
Technical drawings
Reports -- 1940-1970
Manuals -- 1950-1970
Photographs -- 1940-1970
Citation:
National Company (NATCO) Atomic Clocks Records, 1955-1968, Archives Center, National Museum of American History, Smithsonian Institution.
Identifier:
NMAH.AC.0547
See more items in:
National Company (NATCO) Atomic Clocks Records
Archival Repository:
Archives Center, National Museum of American History
EDAN-URL:
ead_collection:sova-nmah-ac-0547
Online Media:

Horten H VI V2

Manufacturer:
Horten, Reimar and Walter  Search this
Designer:
Reimar Horten, Germany pre-1945,  Search this
Materials:
Steel tubing center section covered with plywood and aluminum, wooden wings covered plywood and cotton fabric.
Dimensions:
Wing Span: 24.3 m (79 ft 7 in)
Center Section Length: 2.5 m (8 ft 3 in)
Height: 1 m (3.3 ft)
Weights, Empty: 330 kg (726 lb)
Gross: 410 kg (902 lb)
Maximum Speed: 200 kmh (124 mph)
Best Glide Speed: 84 kmh (52 mph)
Type:
CRAFT-Aircraft
Country of Origin:
Germany
Date:
1944
Credit Line:
Transferred from the U.S. Air Force
Inventory Number:
A19602083000
Restrictions & Rights:
Usage conditions apply
See more items in:
National Air and Space Museum Collection
Location:
Steven F. Udvar-Hazy Center in Chantilly, VA
Hangar:
Boeing Aviation Hangar
Data Source:
National Air and Space Museum
GUID:
http://n2t.net/ark:/65665/nv99d421874-5958-4b91-997d-acad81f89ad7
EDAN-URL:
edanmdm:nasm_A19602083000
Online Media:

This Mid-Air Crash Made Air Travel Safer

Creator:
Smithsonian Channel  Search this
Type:
Youtube videos
Uploaded:
2016-10-14T21:55:45.000Z
Youtube Category:
Entertainment  Search this
See more by:
smithsonianchannel
YouTube Channel:
smithsonianchannel
Data Source:
Smithsonian Channel
EDAN-URL:
edanmdm:yt_qgdgmvLyQhw

Glen A. Gilbert Collection

Creator:
Gilbert, Glen Alexander, 1913-1982  Search this
Names:
Gilbert, Glen Alexander, 1913-1982  Search this
Extent:
1.82 Cubic Feet (4 document boxes; 1 slim document box)
Type:
Archival materials
Collection descriptions
Publications
Date:
1935-1982
Summary:
This collection consists of a seven volume set representing a partial documentation of Gilbert's contribution to ATC development. The material was compiled by Gilbert's wife after his death in 1982. The collection also includes two books by Gilbert on air traffic control.
Scope and Contents:
This collection contains seven bound volumes of Gilbert's written work. The volumes document Gilbert's contribution to ATC development from 1935 to 1982. The material was compiled by Gilbert's wife after his death in 1982. The collection also includes the following books:

Air Traffic Control, Glen A. Gilbert, Ziff-Davis Publishing Company, Chicago, 1945

Air Traffic Control: the Uncrowded Sky, Glen A. Gilbert, Smithsonian Institution Press, Washington, DC 1973

IEEE Transactions on Communications Special Issue on Aeronautical Communications, May 1978, ed. Sherman Karp, George G. Haroules & Leslie Klein, May 1973
Arrangement:
This collection is arranged in Volume order.
Biographical/Historical note:
Glen A. Gilbert (1913-1982), pilot, administrator and aviation consultant, played a key role in the development of the United States and international Air Traffic Control (ATC) System. Following his graduation from the University of Wisconsin, Gilbert went to work in commercial aviation, including periods at Northwest Airways (communications installation and operations, flight operations, (1931-34)), and American Airlines (Communications Supervisor, 1934-36). During this period he helped develop and operate collision-avoidance procedures for aircraft operating under instrument conditions until this service was taken over buy the federal government. Gilbert became the first Director of the United States ATC System (Chief, Airway Traffic Control Section, 1936-40; Chief ATC Division, 1940-46) during which time he represented the United States at a number of international conferences on aviation and played a key role in the formation of the International Civil Aviation Organization (ICAO) in 1944. He then became Special Assistant to the Administrator of Civil Aeronautics (1946-1951), where he continued his involvement with international aviation issues, often under commission for the President or Secretary of State. In 1951, Gilbert became an aviation expert for ICAO (1951-57) and later founded Glen Gilbert and Associates (1957), an aviation consulting firm. Gilbert co-authored 28 patent claims for airborne and ground equipment to improve ATC safety and efficiency and wrote a number of books and articles on the subject.
General note:
Duplicate sets of documents in LC; History of Aviation Collection, University of TX at Dallas; FAA Library; Helicopter Association International. Archival material in History of Aviation Collection, UTX Dallas. One of the books in this collection was transferred to the NASM Library. The title is as follows: Instrument and Radio Flying by Karl S. Day.
Separated Materials:
Instrument and Radio Flying, Karl S. Day, Air Associates, Inc. Garden City, New Jersey, 1938 was transferred to the National Air and Space Museum Library Branch of the Smithsonian Libraries.
Provenance:
Gordon Gilbert, gift, 1984, XXXX-0187, Unknown
Restrictions:
No restrictions on access
Rights:
Material is subject to Smithsonian Terms of Use. Should you wish to use NASM material in any medium, please submit an Application for Permission to Reproduce NASM Material, available at Permissions Requests.
Topic:
Air traffic control  Search this
Airplanes -- Collision avoidance  Search this
Radar air traffic control systems  Search this
Genre/Form:
Publications
Citation:
Glen A. Gilbert Collection, Acc. XXXX-0187, National Air and Space Museum, Smithsonian Institution.
Identifier:
NASM.XXXX.0187
See more items in:
Glen A. Gilbert Collection
Archival Repository:
National Air and Space Museum Archives
EDAN-URL:
ead_collection:sova-nasm-xxxx-0187
Online Media:

Flying safer skies with electronic eyes : the airborne collision avoidance story / Jack L. Shagena, Jr., James E. Dalmas

Author:
Shagena, Jack L  Search this
Dalmas, James E  Search this
Physical description:
289 pages : illustrations portraits (chiefly color) ; 23 cm
Type:
Texts
Place:
United States
Date:
2012
©2012
Topic:
Airplanes--Collision avoidance  Search this
Air traffic control--Technological innovations  Search this
Data Source:
Smithsonian Libraries
EDAN-URL:
edanmdm:siris_sil_1096113

[Technical reports on collision avoidance, airplane radar equipment, and air traffic control]

Author:
Haller, Raymond, and Brown, inc  Search this
Physical description:
<8> v. : ill
Type:
Books
Date:
1953
1953-
Topic:
Airplanes--Collision avoidance  Search this
Airplanes--Radar equipment  Search this
Air traffic control  Search this
Call number:
TL507 .H185
Data Source:
Smithsonian Libraries
EDAN-URL:
edanmdm:siris_sil_472361

[Technical reports on an] obstacle and terrain warning device, airborne type

Author:
General Development Corporation  Search this
Physical description:
<1> v. : ill
Type:
Books
Date:
1954
1954-
Topic:
Airplanes--Cockpits--Warning systems  Search this
Remote sensing  Search this
Airplanes--Collision avoidance  Search this
Call number:
TL507 .G3262
Data Source:
Smithsonian Libraries
EDAN-URL:
edanmdm:siris_sil_472433

[Technical reports on air traffic control, computer simulations, and flight pattern conflict prediction]

Author:
Computer Services Inc  Search this
Physical description:
<2> v. : ill
Type:
Books
Date:
1960
1960-
Topic:
Air traffic control  Search this
Computer simulation  Search this
Airplanes--Collision avoidance  Search this
Call number:
TL507 .C7365
Data Source:
Smithsonian Libraries
EDAN-URL:
edanmdm:siris_sil_472459

[Technical reports on direct-view storage tubes, self contained radar anti-collision systems, and air traffic control]

Author:
Hughes Aircraft Company  Search this
Physical description:
<4> v. : ill
Type:
Books
Date:
1956
1956-
Topic:
Storage tubes  Search this
Airplanes--Collision avoidance  Search this
Air traffic control  Search this
Call number:
TL507 .H893
Data Source:
Smithsonian Libraries
EDAN-URL:
edanmdm:siris_sil_472811

[Technical reports on aircraft collision warning systems, and air traffic control]

Author:
Ramo-Wooldridge Corporation  Search this
Physical description:
<4> v. : ill
Type:
Books
Date:
1956
1956-
Topic:
Airplanes--Collision avoidance  Search this
Air traffic control  Search this
Call number:
TL507 .R175
Data Source:
Smithsonian Libraries
EDAN-URL:
edanmdm:siris_sil_472858

[Technical reports on weather forecasting, airplane design and construction, airplane collision avoidance, navigational equipment, and air traffic control]

Author:
Bendix Corporation (Southfield, Mich.)  Search this
Physical description:
<19> v. : ill
Type:
Books
Date:
1945
1945-
Topic:
Weather forecasting  Search this
Airplanes--Design and construction  Search this
Airplanes--Collision avoidance  Search this
Air traffic control  Search this
Call number:
TL507 .B45
Data Source:
Smithsonian Libraries
EDAN-URL:
edanmdm:siris_sil_473120

[Technical reports on] infrared proximity warning indicators

Author:
Aerojet-General Corporation  Search this
Physical description:
<1> v. : ill
Type:
Books
Date:
1957
1957-
Topic:
Airplanes--Collision avoidance  Search this
Call number:
TL507 .A2521
Data Source:
Smithsonian Libraries
EDAN-URL:
edanmdm:siris_sil_473148

[Technical reports on] separation criteria and decision processes

Author:
Justman, Simon  Search this
Physical description:
<2> v
Type:
Books
Date:
1960
1969
196-?]-
Topic:
Air traffic control  Search this
Airplanes--Collision avoidance  Search this
Call number:
TL507 .J96
Data Source:
Smithsonian Libraries
EDAN-URL:
edanmdm:siris_sil_473964

[Technical reports on radar and radio equipment, glass, crystals, the micro-step motor, collision avoidance, drag, joints, aircraft construction materials, gas bottles for airborne use, models, pre-pressure welding, lift, uniaxial creep, survival equipment, air pressure testing, and a delta sigma modulating system]

Author:
Great Britain Ministry of Technology  Search this
Physical description:
<41> v. : ill
Type:
Books
Date:
1964
1964-
Topic:
Airplanes--Radar equipment  Search this
Airplanes--Radio equipment  Search this
Glass  Search this
Crystals  Search this
Airplanes--Collision avoidance  Search this
Drag (Aerodynamics)  Search this
Joints (Engineering)  Search this
Airplanes--Materials  Search this
Pressure vessels  Search this
Airplanes--Models  Search this
Pressure welding  Search this
Lift (Aerodynamics)  Search this
Materials--Creep  Search this
Aircraft survival equipment  Search this
Pressure--Testing  Search this
Modulators (Electronics)  Search this
Call number:
TL507 .G78656
Data Source:
Smithsonian Libraries
EDAN-URL:
edanmdm:siris_sil_474151

[Technical reports on airplane handling, turbulence, design and construction of airplanes, microphones, airborne radar, collision avoidance, VTOL aircraft, flight control systems, airplane antennas, and Tacan]

Author:
United States Navy Department Bureau of Aeronautics  Search this
Physical description:
<25> v. : ill
Type:
Books
Date:
1943
1943-
Topic:
Airplanes--Handling characteristics  Search this
Atmospheric turbulence  Search this
Airplanes--Design and construction  Search this
Microphone  Search this
Airplanes--Radar equipment  Search this
Airplanes--Collision avoidance  Search this
Vertically rising aircraft  Search this
Airplanes--Control systems  Search this
Antennas (Electronics)  Search this
Tacan  Search this
Call number:
TL507 .U558
Data Source:
Smithsonian Libraries
EDAN-URL:
edanmdm:siris_sil_474397

[Technical reports on weather display for terminal control consoles, visual detection of aircraft, air traffic control simulators, plan for Suffolk County Air Force Base, midair collision avoidance, airport visual displays calculating flight arrival times, and air traffic demands and delays in the New York area]

Author:
United States Airways Modernization Board  Search this
Physical description:
<14> v. : ill
Type:
Books
Place:
New York Region
Date:
1958
1958-
Topic:
Meteorology in aeronautics  Search this
Airplanes--Field of view  Search this
Air traffic control simulators  Search this
Airplanes--Collision avoidance  Search this
Information display systems  Search this
Air traffic control  Search this
Call number:
TL507 .U51125
Data Source:
Smithsonian Libraries
EDAN-URL:
edanmdm:siris_sil_474698

[Technical reports on delay lines, radar, amplifiers, electrets, semiconductors, electrostatics, concealment of targets by fog, a miniature direction finder, antennas, transducers, and collision avoidance]

Author:
U.S. Army Harry Diamond Laboratories  Search this
Diamond Ordnance Fuze Laboratories (U.S.)  Search this
Physical description:
<23> v. : ill
Type:
Books
Date:
1958
1958-
Topic:
Delay lines  Search this
Radar  Search this
Amplifiers (Electronics)  Search this
Electrets--Bibliography  Search this
Semiconductors  Search this
Electrostatics  Search this
Fog--Control  Search this
Radio direction finders  Search this
Antennas (Electronics)  Search this
Transducers  Search this
Airplanes--Collision avoidance  Search this
Call number:
TL507 .U5113har
Data Source:
Smithsonian Libraries
EDAN-URL:
edanmdm:siris_sil_474709

[Technical reports on testing of aeronautical instruments, airplanes, and helicopters, air traffic control, bibliographies on turbulence and collision avoidance, runway lighting, safety, and navigation]

Author:
National Aviation Facilities Experimental Center (U.S.)  Search this
Physical description:
<105> v. : ill
Type:
Books
Date:
1959
1959-
Topic:
Aeronautical instruments--Testing  Search this
Airplances--Testing  Search this
Helicopters--Testing  Search this
Air traffic control  Search this
Airplanes--Collision avoidance--Bibliography  Search this
Atmospheric turbulence--Bibliography  Search this
Runways (Aeronautics)--Lighting  Search this
Aeronautics--Safety measures  Search this
Navigation (Aeronautics)  Search this
Call number:
TL507 .N2774
Data Source:
Smithsonian Libraries
EDAN-URL:
edanmdm:siris_sil_475882

Modify Your Search







or


Narrow By