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Pioneer venus probe models instrumented prop tests
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Muirhead, V. U. |
| Copyright Year | 1978 |
| Description | Models of both the small and large Pioneer Venus probes were dropped from a helicopter to simulate the conditions of Mach and Reynolds numbers to be encountered by the probes upon entry into the Venus atmosphere. The models were dropped at an average Mach number of .10 and at an average Reynolds number of 2.84 million for the small probe and 2.90 million for the large probe. After the large amplitude launching oscillations were damped, the small probe oscillations in angle of attack and in sideslip were generally less than 2 degrees. The large probe oscillations were generally less than 10 degrees. Both exhibited distinct frequencies. The motion of the small probe in a place perpendicular to the z axis was random while the large probe rotated (corkscrewed) at 1.1 cycles per second about the z axis. The average drag coefficients of the probe models were .714 for the small probe and .663 for the large probe. |
| File Size | 20924419 |
| Page Count | 74 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19810014641 |
| Archival Resource Key | ark:/13960/t9x10wv1f |
| Language | English |
| Publisher Date | 1978-08-01 |
| Access Restriction | Open |
| Subject Keyword | Launch Vehicles And Space Vehicles Drop Tests Reynolds Number Oscillations Pioneer Venus Spacecraft Angle of Attack Spacecraft Models Rotation Aerodynamic Characteristics Sideslip Mach Number 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 |
