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Most Recent Daily Test Logs

Don't forget to checkout the Wright Flyer Photos page !!!

Test logs are created by the Test Manager (Pete Zell) each day that a test is "in the tunnel". Entries in the test logs are made when important events occur, when tasks are completed and when milestones are accomplished. S ometimes entries are made once every couple hours, sometimes once per hour, and sometimes with only minutes in between - it all depends on what's happening with the test! At the end of the day, Pete lists the tasks that we plan to do the following day.

The log is posted on a computer network so that anyone at Ames Research Center who is interested in the progress of the test can get up to the minute information about what is happening. At the end of each day, we will post a summary of the daily test log on this webpage so that you, too, can track the progress of the test!


Go to archived test logs:

Week 1, Week 2, Week 3

Jump to a specific test day:

March 15, March 16, March 17, March 18


Thursday, March 18

Executive Summary

We began with Employee Day. Had lots of folks come through. Thanks to Rusty, Joe, and others who helped set up the test section for viewing. Thanks also to Liza for the great motivational signs up the stairs.

Took a crew photo at the start of shift. Accomplished our final runs for component breakdown. Removed the propellers, then canards, then rudders. The bare wing is all that is left. The tunnel ran great tonight. End of Test.

It has truly been a pleasure working with the AIAA Team, the Ames Education folks, The Ames Public Affairs and Photo staff, Craig Hange and AI volunteers, and the wright Flyer FO test team. The success of this effort would not have been possible without the dedication and professionalism of everyone. We did something great!

Action Items

  • Remove the Flyer on Monday morning. (Scotty and crew)

  • Disconnect instrumentation (except for balance). (Simundich)

  • Disconnect electrical power lines. (McCusker/electricians)

  • Remove the Flyer on Monday morning. (Scotty and crew)

  • After model removal, George Fenton would like to do sme bare balance checkloads. Need to have balance hooked up.

  • Decide what to do with wind sensors. (Sacco/A. Silva)

Log

15:00 Start of shift.
15:30 Morning Meeting. We plan to remove the propellers and conduct two wing warp pitch runs tonight. Then we will remove the canards and run another pitch polar. Finally we will remove the rudders and perform a pitch and a yaw polar with just the wing. We will do pitch tare runs after each component removal.
16:00 Removing propellers. Setting up for repeat load case (Run #67) without propellers.
16:30 Recording zero and cal for Run #68.
16:36 Drive start for Run #68. This run was an angle of attack sweep, 0 degrees yaw, wing warp at 6 degrees, at 25 kts. We then proceeded into run #69, the same conditions except wing warp at -6 degrees. Run #70 was a no blades pitch tare.
17:51 Normal Stop
18:00 Run #70 was a no blades pitch tare.
18:30 Removing the model canard using the crane and the Renegade stand.
19:30 Canard removal complete thanks to Mike and Ruben. Run #71 was a no canard pitch tare.
20:00 Breaking for lunch. We will continue running after lunch.
21:15 Ready to go again. Taking zero and cal for Run #72.
21:43 Drive start for Run #72, an angle of attack sweep at 0 degrees yaw, no canard. Half way through the run we lost the N-Prime data system due to a ŮfatalÓ Facility Control System connection error. Decided to finish the run using just Labview and hand recording velocity and model support settings. Crude but it keeps us moving. Finished Run #72 and went to 0 degrees fan blade angle for the rudder removal model change. Paul Stuart is resetting the data system.
23:45 Taking zero and cal for Run #73.
23:48 Back up to 25 knots. Run #73 is an angle of attack sweep with the bare wing (no rudder). Run #74 is a yaw sweep at 1 degree angle of attack with the bare wing.
00:48 Normal stop. Securing facility.
00:50 Run #75 is a bare wing pitch tare. Data gathering complete.
01:30 End of shift. End of test. Model removal will be Monday morning.

 

 

 

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Wednesday, March 17

Executive Summary

We completed two long wind on run sequences tonight that complete our powered runs. The model drive train reached the end of its useful life with a smoked bearing. Great timing. Tomorrow we plan to run a couple full configuration unpowered runs, remove the canards and rudders, and finish the test with a wing only configuration. Model lift-out is planned for Monday morning. No overtime for Friday is required.

Tomorrow is Employee Day between 11:00 and 14:00. We have set up a walkway up the stairs and into the test section. The maximum amount of folks that will be in the test section at a time will not exceed about 50. An elevator operator will be available to ferry those who do not wish to brave the stairs. Digital pictures of groups will be made.

Action Items

  • Volunteers needed for employee day. (All)

Log

15:00 Start of shift.
15:30 Morning Meeting. We plan to conduct some power on runs tonight. Tomorrow is Employee Day between 11:00 and 14:00. We will run after that.
16:00 Reinstalling propellers.
16:30 Recording zero and cal for Run #55, our repeat load case.
17:14 Drive start for Run #56. Auto shutdown due to an incomplete sequence.
17:52 This run was a power on (300 rpm), yaw sweep, 1 degree angle of attack, 5 degrees rudder, at 25 knots. We then proceeded into run #57, the same conditions except 0 degrees rudder. Run #58 was at the same conditions except -5 degrees rudder. We then performed a rudder sweep (Run #59) at 1 degree angle of attack, 0 degrees yaw. The intent of this run was to look for a jog in the data near 0 degrees rudder. We swept from -4 degrees,-3 degrees,-2 degrees,-1 degrees, 0 degrees, 1 degrees, 2 degrees, 3 degrees, 4 degrees rudder all in one direction and then came back to 0 degrees. This was then repeated with the props windmilling (Run #60). The props started windmilling at around 51 rpm at the start of the run and gradually slowed to about 22 rpm at the end of the run. The model and tunnel performed very well.
20:24 Normal stop.
20:30 Breaking for lunch. We will continue running after dinner.
21:45 Ready to go again. We have another sequence of powered runs with canard and wing warping. Taking zero and cal for Run #61.
21:53 Drive start for Run #61. Runs #61 to #63 were all angle of attack sweeps at 0 degrees yaw at 5 degrees, 0 degrees, and -5 degrees canard respectively (300 rpm). During Run #63, at the center zero, we noticed that one of the drive chains was skipping a lot on the center sproket. Shut down the model motor, reduced fans to 0 degrees Blade Angle, and tightened the right side chain extension nut. Continued the run. The chain seems tighter but still rattles a bit. Started Run #64 at 340 rpm. The chain is much smoother at this speed. This is an abbreviated alpha sweep with neutral control surfaces at 0 degrees yaw. We are trying to get closer to the thrust = drag condition. Continued on to Run #65. This was a 6 degrees wing warp alpha sweep at 300 rpm. We got through three points and noticed a whisp of smoke from the center sprocket set. The whisp went away and was followed soon after by a puff of smoke. Immediately shut down 400 Hz set. Brought test section velocity down to zero.
00:38 Normal stop. Went in to inspect. Noticed that the propellers do not turn smoothly. There is a sticking point in the rotation that indicates a bad bearing. It appears that our drive train has reached the design limit. What great timing! The final run and a half with power were not critical.
01:00 Setting up caution tape and digital camera for Employee Day tomorrow. We will gather at 11:00 to greet our guests.
01:30 End of shift

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Tuesday, March 16

Executive Summary

We completed two long wind on run sequences tonight. The model looked very good. The tunnel also ran very well. We will be in at 3 pm tomorrow to take our repeat load point and immediately begin testing. The plan is to put the propsellers back on for some more power on runs.

Action Items

  • Continue to assess data. (AIAA/Hange)

  • Reinstall propsellers (AIAA)

  • Look into VPM 3 alarm annunciator indications. See TDR #8 in the orange log in the control room.

Log

15:00 Start of shift.
15:30 Morning Meeting. Discussed our options for the next series of runs. Decided to continue with 2 minute data points with propellers off. Henry Jex reports good data agreement with the Northrop small scale rigid model. There are some interesting differences however that reflect the flexibility of this model.
16:00 Taking repeat load data (Run #42). Took a point at the end with 25 pounds applied to the west side of the canard skid pushing east. Performing pre-run walkthroughs.
17:05 Recording zero and cal for Run #43.
17:15 Drive start for Run #43. This run was a no propellers, angle of attack sweep, 0 degrees yaw, 5 degrees canard, at 25 knots. Note that the canard completed the run with a 1 degree offset from the initial setting. This probably occurred when the canard stalled at 6 degrees angle of attack. We then proceeded into run #44, an angle of attack sweep, 0 degrees yaw, -5 degrees canard. Run #45 was a yaw sweep at 1 degree angle of attack and 8 degrees of wing warp. This large wing warp produced rolling moments near the capacity of the balance. We bumped our roll stops twice. This was verified by our strip chart traces which showed a minor disturbance of the side force gages at the time of bump. Run #46 was a yaw sweep at 1 degree angle of attack and -8 degrees of wing warp
19:39 Normal stop.
19:45 Breaking for dinner. We will remove the floor camera and adjust the floor to ceiling tufts at 20:45.
20:45 Ready to go again. We have another sequence of unpowered runs.
21:11 Drive start for Run #47. Runs #47 to #52 were all yaw sweeps at 1 degree angle of attack. The control settings for these runs were 4 degrees wing warp, -4 degrees wing warp, 10 degrees rudder, 5 degrees rudder, -5 degrees rudder, and 0 degrees rudder respectively. We did these runs using the fast yaw option on the model support. It worked very well to speed things up and we saw no excess loads on the balance from yaw starts and stops.
00:08 Normal stop. Securing facility. End of shift.

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Monday, March 15

Executive Summary

We completed two long wind-on run sequences tonight. The model looked very good. The tunnel also ran very well. We have been taking 2 minute data points to obtain better data averages and plan to perform some post test data smoothing to further refine the averages.

We will be in at 15:00 tomorrow to take our repeat load point and immediately begin testing. The plan is to do a couple more unpowered runs and then put the propellers back on for some more power on.

Action Items

  • Continue to assess data. (AIAA/Hange)

  • Complete the 400 Hz set sensor cals and get us ready to run with the motor. (Gil D'Allessandro)

Log

15:00 Start of shift. Finishing off the AI checkout runs.
15:30 Shift Meeting. Discussed our options for the next series of runs. Decided to continue with 2 minute data points with propellers off. The advantage of the two minute data points is that we get an OK average for immediate data review purposes and we can go back after the test and do some data smoothing (get rid of discrete flow unsteadiness responses). Also decided to install some upstream and downstream floor to ceiling tuft grids. The AI set checked out fine. The tunnel is ours.
16:30 Removing props. Installing tuft grids. Taking repeat load data (Run #32). Took a point at the end with 25 pounds applied to the west side of the canard skid pushing east.
18:00 Recording zero and cal for Run #33
18:06 Drive start for Run #33. This run was a no propellers, angle of attack sweep, 0 degrees yaw, at 25 knots. We then proceeded into run #34, an angle of attack sweep, -6 degrees yaw. Run #35 was a yaw sweep at 1 degree angle of attack. At the start of Run #35, we tried reducing test section speed to 20 knots to see if the flow quality would improve. No change. Scanned the floor camera around the lower surface of the east wing to scan the tufts. This was done for each point of the last three runs for Jay Stuart. The floor to ceiling tufts were observed during the run. The downstream tufts were observed to deflect due to the influence of the wing at positive angle of attack.
19:51 Normal stop.
20:00 Breaking for dinner. We will remove the floor camera and adjust the floor to ceiling tufts at 21:00.
21:00 Adjusting tufts and removing floor camera. Decided to tape floor panel gaps as well.
21:53 Drive start for Run #36. This run was a no propellers yaw sweep at 4 degrees angle of attack. Run #37 was an angle of attack sweep with the canard set at 10 degrees. Note that points 1 and 2 are a short (10 seconds) and long (2 minutes) point for comparison. We encountered canard stall at around 4 degree angle of attack. Backed off. Aborted point 7. At 0 degree angle of attack we noted that the upper canard trailing edge tufts were reversed. Cycled the canard around to see the flow reverse. Run #38 was an angle of attack sweep with the canard at -8 degrees. Run #39 was a yaw sweep at 10 degrees rudder. The rudder stalled at 10 degrees and 4 degrees yaw. Skipped final point. Run #40 was a yaw sweep at -10 degrees rudder. The rudder stalled at -10 degrees and -4 degrees yaw. Skipped first data point.
00:40 Normal stop. Securing facility. End of shift.

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