NASA 1996 SBIR Phase I


PROPOSAL NUMBER : 96-1 01.15-2000B

PROJECT TITLE : Airborne Doppler Lidar Measurement of Vertical Velocity as Input to a Gust Load Alleviation System

TECHNICAL ABSTRACT (LIMIT 200 WORDS)

A short to moderate range, forward looking scanning Doppler lidar is proposed to be used onboard commercial transport aircraft to sense the vertical velocity ahead, in the vicinity of the flight path, particularly that associated with intense turbulent wind structures, The goal is to provide a closed-loop flight control system with an accurate measurement of the upcoming vertical velocity at sufficient look-ahead distance that the structural loads on the aircraft can be significantly reduced through manipulation of the aircraft control surfaces. The proposed effort leverages two ongoing CTI development efforts of airborne Doppler lidar sensors. The Phase I program will develop and evaluate scanning and processing concepts appropriate for the measurement objectives. A preliminary scanner and algorithm design will be developed in Phase I. The Phase II effort will construct the scanner, implement the appropriate hardware and software changes to the available instrumentation, and perform proof-of-concept flight tests.
POTENTIAL COMMERCIAL APPLICATIONS
Primary end-use applications for the subject sensor are directly related to commercial airlines and aircraft manufacturers. Airborne measurement of wind environments for commercial as well as military aircraft, including gusts, and turbulence, wind shear, wind profiling and wake vortices are the primary application areas. Data acquired and recorded by such instrumentation could be used to validate, and extend, descriptions of the wind shear environment used in flight simulation environments for pilot training.
NAME AND ADDRESS OF PRINCIPAL INVESTIGATOR
NAME AND ADDRESS OF OFFEROR
Coherent Technologies, Inc.
P.O. Box 7488
Boulder, CO 80306