| 5135185 |
Wing mounted unducted fan engine |
Wu-Yang Tseng |
1992-08-04 |
| 5010729 |
Geared counterrotating turbine/fan propulsion system |
Lawrence Butler, Robert A. Wall |
1991-04-30 |
| 4969325 |
Turbofan engine having a counterrotating partially geared fan drive turbine |
Robert A. Wall |
1990-11-13 |
| 4948339 |
Propeller blade counterweight |
— |
1990-08-14 |
| 4936748 |
Auxiliary power source in an unducted fan gas turbine engine |
Lawrence Butler |
1990-06-26 |
| 4916894 |
High bypass turbofan engine having a partially geared fan drive turbine |
Lawrence Butler |
1990-04-17 |
| 4913623 |
Propeller/fan-pitch feathering apparatus |
Jan Christopher Schilling, Julius Bathori, Neil Walker |
1990-04-03 |
| 4883240 |
Aircraft propeller noise reduction |
Philip R. Gliebe |
1989-11-28 |
| 4825648 |
Turbofan engine having a split cowl |
— |
1989-05-02 |
| 4296599 |
Turbine cooling air modulation apparatus |
— |
1981-10-27 |
| 4251987 |
Differential geared engine |
— |
1981-02-24 |
| 4222234 |
Dual fan engine for VTOL pitch control |
— |
1980-09-16 |
| 4222235 |
Variable cycle engine |
Elmore V. Sprunger |
1980-09-16 |
