flight readiness review alive (aerosol lidar validation experiment) august 31, 2005 beat schmid,...
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Flight Readiness Review
ALIVE (Aerosol LIDAR Validation Experiment)
August 31, 2005
Beat Schmid, BAER InstituteJoseph “Ben” Hovelman, Sky Research
Roy Johnson, NASA ARC
Background
• ALIVE is a DOE funded mission utilizing NASA instruments and staff.
• DOE also conducts safety reviews for the ALIVE aircraft in addition to the NASA safety review.
• Dr. Beat Schmid won DOE peer reviewed funding for ALIVE and is the Project Manager as well as the PI for the Ames Sunphotometer during the mission.
Purpose
• Validate Aerosol Extinction Profiles over ARM CRF in Oklahoma derived from ground-based Raman and Micropulse Lidars
• Validate Aerosol Extinction Profiles derived from ARM Cessna 206 in-situ aerosol plane (IAP)
• Derive aerosol optical properties by combining AATS-14 and RSP measurements.
J-31 at Moffett Field Timeframe
• September 7 (Wednesday): Sky Research Jetstream 31 will arrive at Moffett Field
• September 8-10: Instrument integration (AATS-14, NavMet, Aplanix POS, and RSP) into J-31
• September 10 (Saturday): J-31 test flight (30 to 45 minute duration)
• September 11 (Sunday): J-31 departs for Ponca City, Oklahoma
• September 22: J-31 returns to Moffett Field• September 23: Science Instrumentation removed
from J-31 at Moffett Field
Aerosol Lidar Validation Experiment (ALIVE)
Micro Pulse Lidar
Raman Lidar
AATS-14 on Sky Research J-31
Cessna 206Research Scanning PolarimeterNavMetAplanix POS
DOEOklahoma, Sep 11-22, 2005Lead Scientist: B. Schmid
http://geo.arc.nasa.gov/sgg/ALIVE
14-channel Ames Airborne Tracking
Sunphotometer (AATS-14)
Measures: Solar direct-beam transmission, T, at 14 wavelengths, , 353-2139 nm
Data products Aerosol optical depth (AOD)
at 13 , 353-2139 nm Water vapor column content
[using T(940 nm)] Aerosol extinction,
340-2139 nm Water vapor
density
When A/Cflies vertical profiles
}
Research Scanning PolarimeterPI: Brian Cairns, NASA GISS
• Measures upwelling polarized radiation
• ±60° angular scan• 410, 470, 555, 670,
865, 960, 1590, 1880, 2250 nm
AIRPORT FACILITIES
Aircraft modification, sensor installation, and maintenance activities are based at the Sky Research hangar at Ashland Airport (S03) located in southern Oregon. Sensor re-installation and test-flight will be based out of NASA Ames-Moffett Field (NUQ) in California. Instrument deployment flights to the DOE SGP CRF will be based at Ponca City Regional Airport (PNC) in north-central Oklahoma.
Operations
• Flights centered on ARM CRF 36.60°N, 97.48°E. • Timeframe: Sep. 11 – 22, 2005• 10 days on site • 23 on-site research flight hours• 10-15 short duration flights• VFR only, avoid sun obscured by cirrus clouds• Two types of flight patterns
Type 2: Intercomparison Flights
• J-31 will wait until Cessna starts its 15K’ leg then take off (~25 min lag)
• Vertical separation is always more than 1500 ft
• ATC radar flight following at all times
• Continuous radio contact between 2 aircraft
• J-31 will RTB immediately if radio contact is lost
• 3-4 such flights
AIRCRAFT DESCRIPTIONJetstream 31, N22746: • Pressurized, twin-engine turbo prop aircraft, modified to provide an Airborne Sensor
Platform for research, survey, and reconnaissance missions• Large, wide cabin with standing headroom and oversized cargo pod for flexibility in
deploying multiple sensors• A 10” NVG observation bubble window, dual SAT COM communication, dual GPS
navigation, 8 position intercom, extensive inventory of aircraft spares and ground support equipment, survival equipment, and extended range fuel tanks provide for worldwide operations
Jetstream 31, Sky Research Facilities, Ashland Municipal Airport, Oregon
OPERATIONAL LIMITATIONS
Airspeed
Max Cruise 16,000
Survey
220 kts.
120-220 kts.
Altitude
Max
Survey
25,000 MSL
500’-25,000’
Operating Range
Zero Wind w/IFR Reserves
Ferry Tank w/IFR Reserves
850 NMI
2200 NMI
Endurance
Maximum
With Ferry Tanks
5 hrs.
Up to 10 hours
Maximum Runway Requirement
Maximum Gross Weight at Sea Level 4500’
Weights
Ramp
Take Off
Landing
Zero Fuel
Basic Operating
Usable Fuel
Extended Range Fuel
15,322 lbs.
15,212 lbs.
14,550 lbs.
13,889 lbs.
10,500 lbs.
3,024 lbs.
4,500 lbs.
Dimensions (exterior)
Length
Height
Wingspan
47’2”
17’6”
52’
Dimensions (Interior cabin)
Length
Width
Height
25’
6’
6’
Pilot Qualifications
Joseph Hovelman Total Hours: 4300 Jetstream Total Hours: 723
William Seiber Total Hours: 4900 Jetstream Total Hours: 595
Jetstream 31 Safety
• The aircraft is equipped with fire extinguishers and oxygen masks.
• Pilots have 2 emergency switches to shut down power to all research equipment.
• There is no emergency egress impact as a result of the experimental instrument installation.
• No flights over water will be made.• No additional safety equipment is required.• Any emergencies or abnormalities will be handled per
aircraft manufacturer's recommendations and procedures taught by Flight Safety International.
• Downlink Transmissions: none
Radiation Uses• All instruments onboard are of passive
nature.• Will fly Minimum of 500 feet over ground-
based LIDAR beams. – Micro Pulse Lidar, = 523 nm. Eye safe at
zero range and beyond. Detailed calculations available.
– Raman Lidar, =355 nm. Eye safe at output of beam. Detailed calculations available.
– No optics will be used to look at lidar beams
RSP Mechanical Description
http://geo.arc.nasa.gov/sgg/ALIVE/Photos_ALIVE/RSPinteg_photos/RSPinteg.html
The RSP in the instrument bay
View of the RSP from below with the bay cover
RSP Support Electronics box and panel in the aft of the J-31.
RSP control monitor in the
rack at the fore of the J-31
Pictures and descriptions by Kirk Knobelspiesse
Structural Analysis of RSP integration available on request.
Preflight Inspection
• In addition to Standard J-31 Pilot Preflight Inspections, the following are preflight inspection requirements for the research equipment on board.
– AATS-14• Remove AATS-14 rain bucket• Visually inspect AATS-14 safety wires
– RSP• Remove N2 Purge
Risk Management• Only one new instrument (RSP). Remaining equipment flown on J-31 before• May 24, Sky Research certified and included in DOE’s Accepted Aircraft Operator
Database http://ma.mbe.doe.gov/me24/acdb/fetchall.cfm• June 28, approved to fly ALIVE in Vance MOA (Maj DiNatale) • June 28, J-31 ALIVE operations approved by Robert Hannigan (PNNL Aircraft Safety
Officer) Tel. (509) 372-6167• July 21 prelim FRR meeting• July 25, end-to-end test Aplanix/POS, NavMet and AATS-14 in lab successful• Aug 8, start install RSP instrument Ashland• Aug 9, FRR rep inspects RSP install• Aug 10, test flight RSP successful• Aug 12, PNNL Aviation Safety Meeting to review revised operations: Approval has
been received pending final paperwork from the aircraft operator • Aug 17, DOE Aviation Safety Meeting: DOE has approved the aircraft for ALIVE
pending receipt of final paperwork from aircraft operator. • Aug 31, Ames FRR• Sep 8-10, instrument re-integration and test flight, Moffett Field• Sep 11, transfer to Ponca City
Single Point of Failure Review & Mitigation
• We do not see a “Single Point of Failure” for the J-31 ALIVE operations.
• Risk Matrix Examples– Electronic fire– Instrument breaking loose