A test team from the V-22 Joint Program Office spent about six weeks in Logan, Utah confirming that a small software change will result in more lift capability for the Osprey.
The actual change, which is barely observable to the eye, calls for the V-22 rotors to be tilted about four degrees outward. This change reduces the air flow from the rotors over the wings, which allows the V-22 to carry more weight and achieve greater overall performance in hover mode.
â€œWe did see the performance gain from the software change that we expected,â€ said Trevor Strand, V-22 flight test engineer. â€œIt gives the pilot more options. He can either carry more fuel, more troops, go to higher altitudes, or some combination of the three.â€
Strand led the 30-person integrated test team (ITT) during the off-site test at the Logan-Cache Airport during July and August. The ITT flew 25 test flights in 31 days. This effort was the result of about two years of work by NAVAIR engineers to improve the hover performance of the V-22.
The software change that was measured and confirmed in Logan has already been implemented into some MV-22s. The plan is to upgrade all V-22s by the end of the year. The test team is currently updating performance documentation for V-22 operators.
The V-22 team averages about one off-site test event a year. Considerable research and planning goes into finding just the right spot.
â€œWe donâ€™t like to do all of our hover performance testing at sea level because the proprotor is not working at its maximum limits,â€ Strand said. â€œWe donâ€™t want to max out the engines at a very high altitude like 9,000 feet either so the ideal location is somewhere in between.â€
At about 4,400 feet in elevation, Logan provided an ideal test location including the required wind conditions.
â€œIt was one of the most successful off-sites that weâ€™ve ever had,â€ Strand said.
The test team took one MV-22 Osprey to Logan for the test and it was available 100 percent of the time.
â€œThe entire team did an outstanding job,â€ said Mike Caram, V-22 test manager. â€œIt was a very productive off-site with a lot of great work on everyone’s part.â€
PMA-275 Public Affairs
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