NASA SBIR 02-1 Solicitation


PROPOSAL NUMBER:02- A2.03-8358 (For NASA Use Only - Chron: 023641 )
SUBTOPIC TITLE: Revolutionary Technologies and Components for Propulsion Systems
PROPOSAL TITLE: Improving Off-Design Nozzle Performance Using Fluidic Injection

SMALL BUSINESS CONCERN (Firm Name, Mail Address, City/State/Zip, Phone)
SPIRITECH Advanced Products, INC.
880 Jupiter Park Dr. #8
Jupiter , FL   33458 - 8901
(561 ) 741 - 3441

PRINCIPAL INVESTIGATOR/PROJECT MANAGER (Name, E-mail, Mail Address, City/State/Zip, Phone)
Eric Gamble
880 Jupiter Park Dr. #8
Jupiter , FL   33458 - 8901
(561 ) 741 - 3441

Use of fluidic injection of high-pressure air is proposed to improve nozzle performance and reduce the off-axis component of thrust at off-design flight conditions, generally at low Mach number and low pressure ratio. Hypersonic flight vehicles are typically designed with a high expansion ratio single expansion ramp nozzle (SERN) with a design point at high Mach number flight conditions. However, at low Mach number flight, lower nozzle expansion ratios are required for optimum performance. Thus, these vehicles suffer from poor performance throughout much of the low-speed flight regime. In addition, the long SERN ramp creates a significant off-axis thrust at off-design, which must be overcome by shifting the vehicle center-of-gravity or by using the vehicle?s control surfaces. This concept manages the engine and freestream flows to alleviate these problems and improve the overall vehicle performance. The Phase I effort will focus on employing 1-D and CFD analyses to prove concept feasibility and to define the injectant pressure and flow requirements. The Phase II program will focus on a preliminary design, including integration issues, design of the secondary valve and injection features, and component testing to verify overall performance gains.

The industries within this market are large and include Airframers, Aircraft Engine Manufacturers, the DoD, and NASA. Some products that stand to benefit from this innovation are Advanced Military Aircraft, Unmanned Air Vehicles, Hypersonic Vehicles, and LO Vehicles.

The Fluidic Nozzle benefits NASA?s development of Hypersonic and high speed vehicles by providing a lightweight, low cost aircraft system for achieving high vectoring effectiveness while maintaining optimum thrust performance. As a result, the commercial benefit is three-fold:
- It reduces aircraft weight,
- It improves nozzle performance, and
- It reduces life-cycle cost by providing a low-cost vectoring solution.

Form Printed on 09-05-02 10:10