Author: Harold J. JohnsonPublisher:
ISBN:
Category :
Languages : en
Pages : 52
Book Description
Local Flow Measurement at the Inlet Spike Tip of a Mach 3 Supersonic Cruise Airplane
Author: Harold J. JohnsonLocal Flow Measurements at the Inlet Spike Tip of a Mach 3 Supersonic Cruise Airplane
Author: Harold J. JohnsonPublisher:
ISBN:
Category : Aerodynamic measurements
Languages : en
Pages : 40
Book Description
The flow field at the left inlet spike tip of a YF-12A airplane was examined using at 26 deg included angle conical flow sensor to obtain measurements at free-stream Mach numbers from 1.6 to 3.0. Local flow angularity, Mach number, impact pressure, and mass flow were determined and compared with free-stream values. Local flow changes occurred at the same time as free-stream changes. The local flow usually approached the spike centerline from the upper outboard side because of spike cant and toe-in. Free-stream Mach number influenced the local flow angularity; as Mach number increased above 2.2, local angle of attack increased and local sideslip angle decreased. Local Mach number was generally 3 percent less than free-stream Mach number. Impact-pressure ratio and mass flow ratio increased as free-stream Mach number increased above 2.2, indicating a beneficial forebody compression effect. No degradation of the spike tip instrumentation was observed after more than 40 flights in the high-speed thermal environment encountered by the airplane. The sensor is rugged, simple, and sensitive to small flow changes. It can provide accurate imputs necessary to control an inlet.
NASA Technical Note
Author: Mach 3+ NASA USAF YF-12 flight research 1969-1979
Author: Publisher: DIANE Publishing
ISBN: 1428994580
Category :
Languages : en
Pages : 162
Book Description
Scientific and Technical Aerospace Reports
Author: NASA Technical Memorandum
Author: NASA Technical Paper
Author: Use of Nose Cap and Fuselage Pressure Orifices for Determination of Air Data for Space Shuttle Orbiter Below Supersonic Speeds
Author: Terry J. LarsonPublisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 132
Book Description
Author: 
Author: