publisher colophon

Index

A-B-C method, 25

A-I system, 70–74, 77–79, 84, 87, 97, 107

acoustic altimeters, 63

acoustic height finders, 62

Aeronautical Radio, Inc. (ARINC), 84, 86, 173

Aeronautics Branch (Department of Commerce): function of, 57–58

radio blind flying and, 63–64, 66, 68, 69

Air Commerce Act, 8

Air Coordinating Committee (ACC), 159, 164, 173

The Air Line Pilot, 157

Air Line Pilots Association (ALPA), 74, 85–86, 138, 139, 141, 152, 157–160, 170, 180

Air Mail Act of 1925, 31

Air Mail Service (U.S. Post Office), 1–2

Air Navigation Development Board, 173, 175

Air Policy Commission, 173

Air-Track Corporation, 67, 75, 105

Air-Track system (Washington Institute of Technology), 67–68, 82

Air Traffic Control Division (Civil Aeronautics Authority), 144, 149, 166

air traffic control radar, 165–167, 172

air traffic system, 10

Air Transport, 157

Air Transport Association (ATA), 94, 139, 145, 147, 152, 157–160, 167, 170, 173–174

Air University, 141

aircraft control, 12–13

aircraft design: airfield considerations and, 35, 37–39

glide path length and, 97

Aircraft Owners and Pilots Association (AOPA), 138–141, 145, 155–159, 172, 179–180

Aircraft Production Board, 138

Aircraft Radio Laboratory, 68, 83, 87, 91, 96, 100

airfields: approach procedures for, 109, 110

drainage systems for, 42–44

grass, 36, 37, 45

historical background of, 36–40

leader cable system and, 45–55

overview of, 35–36

surfaces for, 38, 40–42

airlines: accident rate among, 151–152

early training programs by, 27–28

mail contracts with, 5, 31–32

negotiations between CAA, Army Air Corps and, 180–181

airmail crisis of 1934, 13, 67, 71

airmail service: economics of, 18

historical background of, 1–2, 16–19

weather-related accidents in, 19–20

airport surveillance radars (ASR), 172, 174

airports: construction of, 42–45

design of, 39

location of, 39–40

Aitken, Hugh, 117

Alcock, John, 16

Alexanderson, E. F. W., 62, 63

All Weather Flying Program (Army Air Forces), 168

all-weather landing system (AWLS), 184

altimeters, 23, 48, 62–63

Alvarez, Luis: background of, 29, 123, 125–126

blind landing research and, 126–132, 135, 145

Collier Trophy and, 137

search radar and, 165

American Air Line, 31

American Airlines, 84

American Loth Company, 47, 50–52

Amtorg Trading Company, 33

AN/MPN-I, 137, 144, 147, 148, 153, 166, 167, 175

AOPA Pilot, 137, 139, 148, 155, 160

Arcata project, 168–171, 174

Army Air Corps: academic organizations and, 182

glide paths and, 85, 97–98

instrument training by, 29

landing system requirements and, 73–74

mail flights by, 32–33

microwave research and, 81, 86, 93, 103

negotiations between CAA, airlines and, 180–181

radio direction finders and, 70, 80

Army Air Forces (AAF): air traffic control radar and, 165–167

automatic GCA and, 158

contacts between Royal Air Force and, 106

glide path projects of, 104, 107

ILS/GCA controversy and, 141, 142, 153, 159–162, 171

Instrument Instructor School, 144

landing aids decisions of, 137

landing training and, 114

policies of, 183

SCS-51 and, 110–115

VHF glide path and, 122

Army Air Service: airfield design and, 36

early airmail flights by, 2, 16–17

turn indicator and, 15

Army Signal Corps: blind landing research and, 77, 82, 99

World War II developments and, 107, 113, 118

x-rays and, 2

Arnold, Henry “Hap,” 8, 80–81, 92, 93, 99–102, 106, 118, 122, 130, 183

Arnold, Milton, 145, 148, 152, 159, 167

artificial horizon, 21–25, 27

automatic direction finders, 70

aviation: academic organizations and, 182

access to skies and, 138

environmental issues related to, 6–8, 55

interest groups related to, 180

links between commercial and military, 182

notion of progress in, 6–8

religious symbolism and, 6–7

Aviation News, 137, 139, 143, 145, 151–153, 160

aviation technology: pre-World War I, 13

World War II, 10, 11, 75, 104, 105, 107, 113, 114, 118, 120, 122. See also specific types of technology

balloon system, 2, 48–49

Balogh, Brian, 180

bank indicator, 15, 26

banking, 14–15

barometric altimeters, 62

Barrow, Wilmer L., 89

Bassett, Preston, 87

Behncke, David, 139, 152, 157–158, 160

Bell Labs, 23, 86

Bender, Luis, 91

Bendix Aviation, 74

Bendix Radio, 75–77, 84, 86, 105, 131, 133

Berlin airlift of 1948, 177–178

Black, Hugo, 32

black box (Ocker), 21, 28

Black Friday, 177–178

blind approach beacon system (BABS), 126

blind flight trainer: Boeing School of Aeronautics, 24

Link’s, 30–31, 33

blind flying: on airmail routes, 16, 32–33

Army Air Corps and, 32–33

instrument dependence and, 33–34

interwar-period research on, 16–17

Ocker-Meyer method of, 21–22

radio, 59–79

use of term, 4

blind landing: altitude and, 12

evolution of concept of, 184–185

failure of, 186

government organizations involved in research on, 57–58

requirements for, 34

use of term, 4

varying aspects of, 12

World War I and, 45, 182

World War II and, 165

blind landing systems: based on three beams of energy, 89

Bureau of Air Commerce and, 82

components of, 123

failure of quest for, 9–10

historical background of, 1–3, 5, 23

ILS/GCA controversy and, 138–162, 171

leader cable system and, 45–55

microwavebased, 89–103

profit motive for, 4–5

progress motive for, 6–9

recommendations for, 117–118

Boeing, William, 7

Boeing Aircraft Company, 7

Boeing Air Transport, 7, 31

The Boeing Company, 7

Boggs, Marshall, 64, 66, 67

Bolling Field, 43, 44

bombers: blind flying and, 75, 90

GCA and, 135

World War II, 75, 164

Boonstra, Henry, 19

Borum, F. S., 82–83

Bourne, Thomas, 143, 144–146

Bowles, Edward, 89–91, 95–97, 100, 104, 107, 115, 122, 182

Brockett, Paul, 93

Brown, Walter Folger, 31

Brown, William G., 23

Buck, J. S., 118

Buckley, Oliver, 93

Burden, William, 152

Bureau of Air Commerce: air traffic control system and, 136

blind landing development and, 29, 67, 70, 71, 74, 76

commercial airlines and, 181

Radio Technical Committee on Aeronautics and, 81–83, 86

Bureau of Lighthouses, 57–58

Bush, Vannevar, 93–101, 107, 117, 124–125, 127

CAA. See Civil Aeronautics Authority (CAA)

California Institute of Technology (CalTech), 23

Carl Lorenz A. G., 76, 82

center-line lighting, 170–171

Chaplin, Sidney, 29

Charlton, John, 19

Chicago Tribune, 152

Christensen, J. Titus, 19

Churchill, Winston, 122

Civil Aeronautics Act, 151

Civil Aeronautics Authority (CAA): Air Traffic Control Division, 166

air traffic control radar and, 166–167

airways use statistics of, 154–156

Congress and, 146, 148, 150–152, 155–156, 160, 163

demise of, 176

GCA system and, 144–150

glide path and, 108, 122

ILS and, 10, 137–139, 141, 142, 154, 158, 160–162

Interagency Air Traffic Control Board, 153

landing aids and, 170–172

microwave research and, 80, 81, 83, 84, 88, 94, 98, 101–103, 106

negotiations between airlines, Army Air Corps and, 180, 181

policy standardization and, 142, 143

radar issues and, 137, 145, 146, 148–151, 175–176

system problems and, 105, 106

Civil Aeronautics Board, 163, 172

Clarke, Arthur C., 132, 169

clouds, spins in, 19–20

Collier Trophy, 23, 137

Colonial Air Transport, 31

Columbus, Ohio, 42

Colvin, Charles H., 15

Committee on Instrument Landing Devices (Radio Technical Commission for Aeronautics), 86

compass: gyroscopic, 22

magnetic, 13, 14, 16

radio, 70–71, 74, 80

compass locators, 71, 107, 112, 182

Compton, Karl, 91, 124, 125

Comstock, George, 125, 127, 132, 135, 165

Congress, U.S.: aviation policy and, 159–163, 170

Civil Aeronautics Authority and, 146, 148, 150–152, 155–156, 160, 163

ILS/GCA controversy and, 141, 158

landing aids controversy and, 171–174

1946 elections and, 146, 148, 150–152

Congressional Air Policy Committee, 173

constant-intensity glide path, 64, 65

contact flying: explanation of, 13–14

instrument flying vs., 28

continuous wave system, 104–107, 117–119

Cooch, H., 47, 48

Corn, Joseph, 6–8, 138, 179

CPN-18 project, 165–167, 171

Craig, P. H., 69

Crane, Carl, 13, 20–22, 28

Cronon, William, 9

cross-pointer indicator, 63, 65, 98

Cunningham, J. R., 73, 74, 87

Cutrell, Ernest A., 27, 67, 71, 86–87

cyclotron, 125, 135

Day, Karl, 28, 29

de la Vaux, Count, 47, 51

Delco Electronics, 118

Department of Commerce: Aeronautics Branch, 57, 58, 63–64, 66

aviation regulation by, 8, 55

design lock-in, 131

Diamond, Harry, 59, 63, 74, 89, 161

Dingley, Edward, 52–54

disorientation: demonstration of, 28

spins resulting from, 19–20

distance measuring equipment (DME), 120

Doolittle, James “Jimmy,” 23, 60–62, 67, 183

Doty, Lyman, 19

drainage systems, airfield, 42–44

DuBridge, Lee, 106, 125, 164

Duckworth, J. B., 141

Duncan, C. E., 99

Dunmore, Francis, 63, 74, 89, 161

Durand, W. F., 93

DVL, 76

Eagle blind bombing radar, 131

Eaker, Ira, 152, 183

Eastern Airlines, 7, 84, 151

Eastern Air Transport, 25, 31, 67, 71

Eastman, Clyde, 99

Eclipse Aviation, 74

Eighth Air Force, 112–113, 165, 182–183

Eisenhower, Dwight D., 175

Ellsworth, M. Harris, 152, 158–159, 178

environmental issues, 6–8, 55

equal signal transmitter, 59

Erlanger, Joseph, 93

Experimental Aircraft Association (EAA), 180

Farley, James, 32

Federal Aviation Act of 1958, 181

Federal Aviation Administration: function of, 179, 180

outlook for, 181

Federal Aviation Agency, 176. See also Federal Aviation Administration

Federal Communications Commission, 81, 86, 173

Feminist historiography, 178–179

FIDO, 167, 169–171

flight instruments: artificial horizon and, 21–25, 27

dependency on, 25

developments in, 13–33

placement of, 27

training programs in, 25, 27–28

during World War I, 13–14. See also specific instruments

flight integrator, 22

flight into terrain, 19

Florez, Luis de, 139, 148

fog landings. See blind landing; blind landing systems

Ford, Henry, 7

Forest, Lee De, 52

Foulois, Benjamin, 32, 33, 36, 40, 71

France: blind landing technology in, 3

leader cables and, 45–47

Freng, R. T., 85, 87

Frye, Jack, 145

Gazely, Richard, 87, 88, 95

GCA. See ground-controlled approach (GCA) system

Gee system, 112, 120

General Electric, 96, 165

Georgia School of Technology, 23

Gerdon, H. P., 69

Germany: blind bombing and, 75

blind landing technology in, 3, 22, 49

radio blind landings and, 76–77

Gherardi, Bancroft, 93

Gilbert, Glen, 144–145, 149, 155, 166

Gilfillan Brothers, 128, 129, 131–133, 143, 146, 147, 149–150, 158, 166

glide path: Army and, 104–105

CAA, 108

curved, 83, 84, 86, 102–103

development of, 63, 64, 122

Indianapolis system and, 88, 101

ITRM, 108, 109

length of, 80, 97–98

microwave, 93, 95, 96, 119

pilot training and, 83

shape of, 87–89, 96, 97

using horizontal polarization, 75

Goldsborough, Paul, 84

Gorrell, Edgar S., 94

grass airfields, 36, 37, 45

Griffin, Bruce, 125

Griffiths, Frank, 135, 185

Griggs, David, 127

ground-based flight training, 29–31

ground-controlled approach (GCA) system: automatic, 158

controversy between ILS and, 138–163, 171, 174

costs of using, 138, 139, 161–162

data on, 154, 155

development and testing of, 127–133

explanation of, 122, 126

function of, 133–134

instrument approaches under, 145

integration of ILS and, 163, 164

performance data on, 154, 155

politics and, 150–162

precision radars and, 168–169

promotion of, 137, 138

safety issues and, 156, 157, 177, 178

search radar and, 165, 168

as traffic control aid, 157–158

training for use of, 139, 141

use of, 135, 137–138, 177–179

ground proximeter, 48

Guerlac, Henry, 118

Guggenheim, Daniel, 22–23

Guggenheim, Harry, 23, 61, 186

Guggenheim Foundation for the Promotion of Aeronautics, 3, 23, 182

Gunn, Dano, 93

gyrocompass, 27

gyrorector, 22, 23

gyroscope, 15

gyroscopic compass, 22

Hadfield, A. H., 145

Hansen, James, 3

Hansen, William, 90, 91

Hanson, Earl C., 52–54

Hartranft, J. B., Jr., 139, 155, 156, 179

Hegenberger, Albert F., 70, 71

Hegenberger system, 70, 72–73, 80, 96, 100, 101, 112, 160

Heilbron, John, 125

Henderson, Lawrence Joseph, 93

Henderson, Paul, 18–19

Hester, Clinton, 92, 101

Hinshaw, Carl, 152

Holloman, George V., 82–83

Hooper, Stanford C., 52, 57

Hoover, Herbert, 7, 51, 57, 59

Hunsaker, Jerome, 93

ILS. See instrument landing system (ILS)

Indianapolis system, 87–88, 95–97, 101–106, 115

instrument flying, 28

Instrument Instructor School (Army Air Forces), 144

instrument landing system (ILS): Air Coordinating Committee and, 159

Army Air Forces use of, 137

CAA and, 10, 137–139, 141, 142, 154, 158, 160–162

controversy between GCA and, 138–163, 171, 174

integration of GCA and, 163, 164

Korean flight crash and, 177

politics and, 152–162

views of, 138, 177, 178

instrument landing training, during World War II, 114

Interagency Air Traffic Control Board (IATCB) (Civil Aeronautics Authority), 142, 153

International Telephone and Radio Manufacturing Company (ITRM), 108, 109, 118

International Telephone and Telegraph (IT&T), 82, 86

International Telephone Development Corporation (ITD), 86, 92, 104, 105, 108

Jackson, William, 95, 97

Jewett, Frank, 93, 98, 125

Johnson, James, 145–146

Johnston, Lawrence, 125, 126, 129, 131

Jones-Barany chair, 20, 21, 28

Kettering, Charles, 16–18

King, Ernest J., 75

klystrons, 90–92, 116

Komons, Nick, 158

Korean War, 175

Kreusi, Geo¤rey, 70

Kroger, William, 139, 143, 145, 150, 153

Lamborn, Charles, 19

Land, Emory S., 145

Landing Aids Experiment Station (LAES), 168–171

landing beams, 63–64

landing fields. See airfields Landis, John, 162, 172

Langmuir, David, 106, 164

L’Armee de l’Air (France), 15

Lawrence, Ernest, 125

Lawrence, T. E., 6

leader cable system: Dingley, 53, 54

Hanson, 52–54

leader cable system: applications for, 49, 51

background of, 45–47

Loth, 45, 47, 50

variations of, 51–55

Leary, William, 81

LeMay, Curtis, 168, 183

lighting: approach and landing, 169, 170

centerline, 170–171

slope-line, 170

Lindbergh, Charles, 1, 4, 13, 21

Link, Edwin A., Jr., 29–33

Loomis, Alfred, 117, 124, 125, 127, 128

Loomis, F. Wheeler, 125, 165

Loran system, 120

Lorenz, Carl, 77

Lorenz system: development, 76–78, 83, 84

production of, 106

Loth, William, 45–47, 52

Loth leader cable system, 45, 47, 48, 50. See also leader cable system

Lucas, Keith, 14

magnetic compass, 13, 14, 16

magnetron: development of, 117, 122

resonant cavity, 124

Mark I GCA, 128–133

Mark II GCA, 129–132

Marriner, A. W., 85, 87

Mason, Max, 93

Massachusetts Institute of Technology (MIT), 3, 23, 115

Lincoln Laboratory and, 182

microwave technology and, 80, 86, 89, 91, 92, 94

Radiation Laboratory, 104, 105, 117–119, 122–125, 135, 165

Mauborgne, John O., 83, 84, 91, 99

McAlpine, Major, 47

McClelland, Harold, 130, 143, 152, 159, 167

McDougall, Walter, 175

mental hazard, 69

Metcalf, Irving, 89, 91

Meyers, David, 20, 21, 28

microwave research: Army support for, 115

early events in, 89–92

klystron and, 90–92, 116

magnetron and, 117

National Academy of Sciences and, 92–102

outlook for, 122

Miller, Wendell, 42

Mitchell, Hugh, 87, 88, 91, 95

Morse code, 59, 60

Moseley, Francis L., 113

multipath effects, 78

Murray, Charles V., 137

National Academy of Sciences (NAS): blind landing programs and, 81

RTCA system and, 92–102

National Air Traffic Controller’s Organization (NATCO), 180

National Air Transport, 31

National Bureau of Standards (NBS): blind landing research and, 51, 57, 67–69, 103

establishment of, 57

goal of, 3

radio research and, 2, 23, 56, 57–79

National Business Aircraft Association, 180

National Defense Research Committee (Office of Scientific Research and Development), 124

National Research Council, 93

National Transportation Safety Board, 177

Naval Air Transport Service (NATS), 152, 153

Navy, U.S.: blind landing research by, 3

GCA and, 137, 139, 141, 142, 152–153

NBS landing system and, 67–69

NBS. See National Bureau of Standards (NBS)

New York Herald Tribune, 152

New York Times, 145, 151

Night Flight (Saint-Exupéry), 1, 4

Northwest Air Lines, 31

Ocker, William C., 13, 20–22, 28

Ocker-Meyer method, 21–23

Office of Naval Aeronautics (U.S. Navy), 22

Office of Naval Intelligence (ONI), 67

Office of Scientific Research and Development (OSRD), National Defense Research Committee, 124

1-2-3 method (Stark), 25, 26, 28

Pan American Airlines, 28, 145

pilot-control model, 103, 123

pilot training. See training programs

Pioneer Instrument Company, 15

Pioneer Instruments, 30

plan position indicator (PPI) displays, 131

Popular Science, 145

Post Office, U.S.: air routes of, 31, 40

early air mail service of, 1–2, 4, 5, 16–19

lighted airfields and, 51

Praeger, Otto, 7, 16–19

precision approach radars (PARS), 172

Presidential Special Board of Inquiry on Air Safety, 163

Project Baker, 68

Provisional International Civil Aviation Organization (PICAO), function of, 119–122, 174

pulsed glide path (PGP): development of, 104, 117, 127

reasons for nonproduction of, 118–119

tests of, 117, 118

Rabi, I. I., 125

radar: air safety and, 151

air traffic control, 165–167

airport surveillance, 172

Civil Aeronautics Authority and, 137, 145–146, 148–151, 175–176

eagle blind bombing, 131

networking automatic long- and short-range, 174

precision approach, 172

Radiation Laboratory (Massachusetts Institute of Technology), 117–119, 122–125, 135, 165

radio altimeters, 62, 63

radio blind flying: A-I system and, 70–74, 78, 79, 97

commercial airlines and, 73–75

cross pointer and, 63, 65

experimental developments in, 66–73

landing beams and, 63–64, 66, 71

Lorenz system and, 76–78

organizations involved in, 57–58

radio navigation beacons and, 59–62

stability issues and, 58, 69–70, 78, 79

United Air Lines and, 74–76

Radio Technical Commission on Aeronautics (RTCA): blind landing research and, 107, 160

function of, 81, 163, 173–174

International Telephone Development Corporation’s system and, 86

legal authority issues and, 81–82

recommendations of, 174–175

standards system and, 83–89

railroads, 14

RCA, 86, 96

recurrent training, 28

Reeves, J. W., 152, 153

religious symbolism, 6–7

Rentzel, Delos, 173–174

resonant cavity magnetron, 124

Rickenbacker, Eddie, 7, 182, 183

Rivers, L. Mendel, 151

Robertson Aircraft Corporation, 31

Rochester, New York, 42–43

Rockefeller, William A., 7

Roosevelt, Eleanor, 84

Roosevelt, Franklin Delano, 31–33, 81, 93, 98–100, 102, 104, 120, 183

Royal Aeronautical Society, 138

Royal Air Force (RAF): blind landing technologies and, 2, 106, 112

World War II and, 113, 127, 164

Royal Aircraft Establishment (RAE), 47–49

Royal Aircraft Factory, 14, 15

Royal Navy, 45–46

RTCA. See Radio Technical Committee on Aeronautics (RTCA)

rudder, 26, 27

Saint-Exupéry, Antoine de, 1, 4

Sanders Teacher, 29

SBA. See standard beam approach (SBA) system

SC-31, 175

Schaefer, E. B., 27

Schatzberg, Eric, 8–9

SCR-584, 126

SCS-51: data on, 118, 154, 155

development of, 104, 110–115

instrument approaches under, 145

use of, 119, 121–122, 137, 144, 175. See also very high frequency (VHF) glide path

Seidel, Robert, 125

Selfridge Field, 43, 44

Shangraw, C. C., 73

Sherlock, Harry, 19

slope-line lighting, 170

Snow, Chester, 71, 73

Société Industrielle des Procédés Loth, 47

Spaatz, Carl, 113, 121

Specifications for Municipal Landing Fields (Army Air Service), 36

Sperry, Elmer, 15, 16, 22, 23

Sperry, Elmer, Jr., 23

Sperry, Lawrence, 15, 16

Sperry artificial horizon, 23, 24

Sperry Gyroscope Company, 15, 80, 86, 91, 92, 96, 99, 100, 104, 105, 115, 118–119

Sperry Gyroscope microwave glide path transmitter, 116–117

spins: causes of, 19–20

research on, 20–21

Spoils Conference (1930), 31

Sproul, Clarence B., 142, 152–155, 158

St. Paul, Minnesota, 43

standard beam approach (SBA) system: explanation of, 106, 112, 114

performance of, 127

Standley, William H., 75

Stanford University, 3, 23, 80, 90–92

Stanton, Charles: CAA policy and, 94, 95

ILS and, 138, 139, 146

landing aids decisions and, 120

Stark, Howard, 25–28

Stern, Ben, 144

Stevenson, Charles, 45

Stoner, Clayton, 19

Subcommittee on Instrument Landing Devices (Radio Technical Committee on Aeronautics), 82

Tasker, Homer, 128, 131, 132, 143

Telfunken, 76

Tizard, Henry, 117, 122, 124

training programs: curved glide path and, 83

GCA, 139, 141

ground-based, 29–31

instrument flying, 25, 28–29

recurrent, 28

in Stark’s rule-based flying, 27–28

during World War II, 114

Transcontinental Air Transport, 66

Transcontinental and Western Air (TWA), 31, 145

Truman, Harry, 151, 163

tuned read indicator, 61, 62

turf airfields, 38, 40–42

turn-and-bank indicator, 26

turn indicator, 15–16, 17f, 25–27

Twelve O’Clock High, 182–183

Tymms, F., 49

UHF frequencies, 85

UHF localizers, 67, 75, 78, 96

UHF/microwave hybrid, 96

UHF system, 94, 106, 107

United Air Lines: blind landing developments and, 7, 28, 31, 32

radio blind landing systems and, 74–76

view of blind landings, 96

United-Bendix system, 75–78, 82

United Kingdom, 45, 47–49

University of Michigan, 23

University of Washington, 23

U.S. Air Forces in Europe (USSTAF), 113, 114

U.S. Military Air Transport Service, 121

Varian, Russell, 90, 91

Varian, Sigurd, 90, 91

Varney Air Lines, 31

Verne, Jules, 8

vertigo, 20, 21

very high frequency (VHF) glide path, 104–105, 115. See also SCS-51

Vidal, Eugene, 70, 71, 73

visibility, 12

visual omni-range (VOR) system, 120

Warner, Edward P., 121

Washington Institute of Technology, 67, 82, 86

Watson, Edwin, 98–102

Watson-Watt, Robert, 120

weather: accidents related to, 19–20

forced landings caused by, 1–2

research on, 183

Webster, William, 90

Western Air Express, 31

Western Electric, 23

Westover, Oscar, 93

Whitney, Cornelius Vanderbilt, 7

Wilbur, Ray Lyman, 91

Willis, Hugh, 91

Wilson, John, 144, 170

Winner, Langdon, 178

Wohl, Robert, 6

Wolverton, Charles, 152

Woodring, Harry, 98–100

World War I: airfields during, 35, 36, 40

blind landing technology during, 45, 182

pilot training during, 30

World War II: blind bombing in, 75, 164

blind landing technologies during, 10, 11, 107–119

defense procurement during, 151

glide path projects and, 104, 105, 107

visual omnirange and, 120

Wright, Theodore P., 138, 145, 148–150, 152, 153, 156, 157, 161, 166, 172

XT-I, 126, 127, 133. See also SCR-584

YB system, 67–69, 75

Yount, Brigadier General, 102

Zeppelin acoustic height finder, 62, 63

Previous Chapter

Notes

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