Altitude Compensating Nozzle Transonic Performance Flight Demonstration

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$69,920.00
Award Year:
2004
Program:
SBIR
Phase:
Phase I
Contract:
NND04AA48C
Award Id:
67342
Agency Tracking Number:
035782
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
4835 University Square, Suite 2, Huntsville, AL, 35816
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
127963515
Principal Investigator:
RichardDenton
Principal Investigator
(256) 489-5832
dick.denton@kte-aerospace.com
Business Contact:
DavidSisk
Business Official
(256) 489-5832
david.sisk@kte-aerospace.com
Research Institute:
n/a
Abstract
Altitude compensating nozzles continue to be of interest for use on future launch vehicle boosters and upper stages because of their higher mission average Isp and superior packaging efficiency compared with conventional bell nozzle designs. The plume physics and performance of altitude compensating nozzles have been characterized through extensive cold gas wind tunnel testing, limited hot gas testing, and computational fluid dynamic modeling. However, no altitude compensating nozzle has ever been validated in flight. Questions remain regarding performance through the critical transonic regime (Mach 0.6-1.5) where a high degree of interaction is expected between the external flow around the vehicle and the hot gas plume. A Phase I study is proposed to establish feasibility of validating transonic performance for an altitude compensating nozzle using the NASA F15B Propulsion Flight Test Fixture. Under this Phase I program we will derive requirements for the test, develop preliminary designs for the flight test article, establish test plans and procedures, coordinate closely with the NASA Dryden Flight Research Center to assure experiment safety and seamless integration with the F15B/PFTF, finalize plans for Phase II, and document our results. Test article fabrication, integration, and testing will be performed during a subsequent Phase II effort.

* information listed above is at the time of submission.

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