1998/1999 Trap Wing Data Archive

Ames 12' PWT Test Overview

The Trap Wing model was tested in the Ames 12' PWT for ten single-shift weeks during the Spring of 1999. Installation in the test section began on March 15th, and the first air was blown over the model on March 26th. The test was completed (including model removal) on May 21st. A total of 536 runs were recorded during the test - 291 for the fullspan flap configuration, and 245 for the part span flap configuration. Several measurement and visualization techniques were employed during the test to provide the CFD community with not only force and pressure data, but transition, boundary layer, wake deficit, and separation data as well. Below is a summary of the various techniques (clicking on link will provide more detailed information):

**Measurement and Visualization Techniques**
Measurement or visualization method	Symbol	Description
Force and moment data	FP	Semispan floor balance: NF-40k lb, AF-8k lb, PM-20k ft-lb, RM-200k ft-lb, YM-40k ft-lb
Model pressures	FP	Approximately 900 pressures on slat, main element, flap, and body pod. Additional pressure data from test section walls, image plane, and wall-mounted pressure rails also obtained
Temperature sensitive paint	TSP	For transition detection on the slat upper surface and forward portions of the upper surface of the main element and flap
Minitufts	MT	For determining stall progression (separation). 0.0025" dia. fluorescent polyester monofilament material applied to flap and aft portion of main element.
7-hole probe	7HP	Model-mounted traverser system for boundary layer and wake-deficit measurements at several upper-surface locations on the model.

The key force and pressure (FP), minituft (MT), and temperature sensitive paint (TSP) runs were conducted at Mach = 0.15 for Reynolds numbers (RN) ranging from 3.5 million to 15 million. Below are tables describing the configurations that were tested and the Re values at which data were obtained.

Fullspan Flap - Landing Configuration

Config	Slat Defl.	Slat gap (g/c)	Flap Defl.	Flap gap (% c)	Run type	Re = 3.5M	Re = 5.9M	Re = 8.8M	Re = 11.6M	Re = 15M
1	30	.015	25	.015	FP	X	X	X	X	X
					MT	X	X	X	X	X
					TSP	X	X	X	X	X
27	30	.01	25	.015	FP	X		X		X
					MT
					TSP
28	30	.02	25	.015	FP	X	X	X	X	X
					MT
					TSP
2	30	.015	25	.010	FP	X		X		X
					MT					X
					TSP
29	30	.015	25	.020	FP	X		X		X
					MT			X		X
					TSP
31	30	.015	30	.010	FP	X		X		X
					MT	X		X		X
					TSP
30	30	.015	30	.015	FP	X		X		X
					MT
					TSP	X		X		X
32	30	.015	30	.020	FP	X		X		X
					MT
					TSP

Fullspan Flap - Takeoff Configuration

Config.	Slat Defl.	Slat gap	Flap Defl.	Flap gap	Type	M=.2, Re=5.6	M=.2, Re=11.1	M=.25, Re=5.6	M=.25, Re=11.1
38	20	0 (sealed)	10	.010	FP	X	X	X	X
					MT			X	X
					TSP			X	X
39	20	.005	10	.010	FP		X	X	X
					MT				X
					TSP				X

Partspan Flap - Landing Configuration

Config	Slat Defl.	Slag gap (% c)	Flap Defl.	Flap gap (% c)	Run type	Re = 3.5M	Re = 5.9M	Re = 8.8M	Re = 11.6M	Re = 15M
9	30	.015	25	.015	FP	X	X	X	X	X
					MT	X		X		X
					TSP	X	X	X		X
40	30	.015	25	.010	FP	X		X	X	X
					MT	X		X	X	X
					TSP
41	30	.015	25	.020	FP	X		X	X	X
					MT	X		X	X	X
					TSP
43	30	.015	20	.010	FP	X		X	X	X
					MT	X		X	X	X
					TSP
42	30	.015	20	.015	FP	X	X	X	X	X
					MT	X	X	X	X	X
					TSP		X	X	X	X
44	30	.015	20	.020	FP	X		X	X	X
					MT	X		X	X	X
					TSP	X	X

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