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Effect of control logic modifications on airstart performance of f100 engine model derivative engines in an f-15 airplane
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Burcham Jr., F. W. Crawford, D. B. |
| Copyright Year | 1984 |
| Description | A series of airstarts were conducted in an F-15 airplane with two prototype Pratt and Whitney F100 Engine Model Derivative engines equipped with Digital Electronic Engine Control (DEEC) systems. The airstart envelope and the time required for airstarts were defined. Comparisons were made between the original airstart logic, and modified logic which was designed to improve the airstart capability. Spooldown airstarts with the modified logic were more successful at lower altitudes than were those with the original logic. Spooldown airstart times ranged from 33 seconds at 250 knots to 83 seconds at 175 knots. The modified logic improved the airstart time from 31% to 53%, with the most improved times at slower airspeeds. Jet fuel starter (JFS)-assisted airstarts were conducted at 7000 m and airstart times were significantly faster than unassisted airstarts. The effect of altitude on airstart times was small. |
| File Size | 2678451 |
| Page Count | 34 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19840021810 |
| Archival Resource Key | ark:/13960/t06x4675h |
| Language | English |
| Publisher Date | 1984-08-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Propulsion And Power Electronic Control Flight Tests Digital Systems Aircraft Design Fuel Flow Feedback Control Aircraft Engines F-15 Aircraft Time Response Aircraft Control Airspeed Prototypes Starting Shutdowns Flight Altitude Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
