|
|---|
Multiplace Bomber (MB)
(1918-1921) |
|---|
| Martin | MB-1 | Glenn Martin Bomber |
| Martin | MB-2 | |
Day Bombardment (DB)
(Type XI - 1921 to 1923) |
|---|
| Gallaudet | DB-1 | |
| Gallaudet | DB-1B | |
Night Bombardment - Short Range (NBS)
(Type XII - 1921 to 1924) |
|---|
| Martin | NBS-1 | |
| LWF | XNBS-2 | |
| Elias | XNBS-3 | |
| Curtiss | XNBS-4 | |
Night Bombardment - Long Range (NBL)
(Type XIII - 1920 to 1923) |
|---|
| Witteman-Lewis | XNBL-1 | Barling Bomber |
| Martin | XNBL-2 | |
Light Bombardment (LB)
(1923 to 1930) |
|---|
| Huff-Daland | LB-1 | |
| Atlantic | LB-2 | |
| Huff-Daland | XLB-3 | |
| Martin | XLB-4 | |
| Keystone | LB-5 | |
| Keystone | LB-6 | |
| Keystone | LB-7 | |
| Keystone | LB-8 | |
| Keystone | LB-9 | |
| Keystone | LB-10 | |
| Keystone | LB-11 | |
| Keystone | XLB-12 | |
| Keystone | LB-13 | |
| Keystone | LB-14 | |
Heavy Bombardment (HB)
(1926 to 1927) |
|---|
| Huff-Daland | XHB-1 | |
| Atlantic | XHB-2 | |
| Huff-Daland | XHB-3 | |
| Long-Range Bomber
1933 Project A
1935 Project D
|
|---|
| Boeing | | Model 306 |
| Boeing | XBLR-1 | Model 294 |
| Douglas | XBLR-2 | |
| Sikorsky | XBLR-3 | |
|
|---|
Bombardment Aircraft (B)
(starting 1926) |
|---|
| Huff-Daland | XB-1 | |
| Curtiss | B-2 | |
| Keystone | B-3 | |
| Keystone | B-4 | |
| Keystone | B-5 | |
| Keystone | B-6 | |
| Douglas | Y1B-7 | |
| Fokker | XB-8 | |
| Boeing | Y1B-9 | |
| Martin | B-10 | |
| Douglas | YB-11 | |
| Martin | B-12 | |
| Martin | XB-13 | |
| Martin | XB-14 | |
| Boeing | XB-15 | |
| Martin | XB-16 | |
| Boeing | B-17 | Flying Fortress |
| Douglas | B-18 | Bolo |
| Douglas | B-19 | Flying Behemoth |
| Boeing | XB-20 | |
| North American | XB-21 | Dragon |
| Douglas | XB-22 | Bolo |
| Douglas | B-23 | Dragon |
| Consolidated | B-24 | Liberator |
| North American | B-25 | Mitchell |
| Martin | B-26 | Marauder |
| Douglas | B-26 (A-26) | Invader |
| Martin | XB-27 | |
| North American | XB-28 | |
| Boeing | B-29 | Superfortress |
| Lockheed | XB-30 | Constellation |
| Douglas | XB-31 | |
| Consolidated | B-32 | Dominator |
| Martin | XB-33 | Super Marauder |
| Lockheed | B-34 | Ventura |
| Northrop | XB-35 | Flying Wing |
| Convair | XB-36 | Peacemaker |
| Lockheed | B-37 | Lexington |
| Boeing | XB-38 | Flying Fortress |
| Boeing | XB-39 | Spirit of Lincoln |
| Boeing | YB-40 | Flying Fortress |
| Consolidated-Vultee | XB-41 | |
|
|
