Main Menu

Aero Design & Engineering 840

Aero Design & Engineering 980

aerodes840-920


In 1980, an increase in turboprop sales led by the Jetprop 980 and Jetprop 840. The former carries up to eight persons and is powered by Garrett TPE-3331-10-501K turboprops. It is characterized by a 309 knot cruise, a 3,176-pound useful load, 5.2 psi pressurization, and enough fuel for a mission-efficient range of 2,040 run with reserves. The 840, powered by twin Garrett TPE-331-5-254K turboprops, boasts speeds up to 290 knots and a maximum range of 1,780 nm with reserves. Rockwell developed high-technology sound control permits an easy conversation level in the cabins of both aircraft. Standard and custom cabin appointments permit the owner to outfit the interiors with hideaway tables, beverage servers, reclining chairs, telephones, and stereo systems.

The numerical designations of the 840/980 denote maximum potential horsepower per side before derating to a common 700 shaft horsepower each. Both airplanes have Garrett TPE 331s: -10 on the 980 and -5 on the 840. The 980's greater potential power translates into bet-ter climb above 10,000 feet, extra speed and a superior single-engine ceiling. Fuel on the 690B was housed in 22 bladders holding 380 gallons, but the 840/980's Garretts are fed by a more uniform system. Capacity has gone up to 420 USG, and the wings are wet out-board of the nacelles. Bladders (10 of them) remain in the inboard sections. The new layout cuts refuelling time by two thirds, but at the cost of numerous inspection panels for access to the wet bays. The void left by removal of the fuselage tank on the 840/980 has allowed the baggage volume to be almost doubled to 75 cubic feet.

Absolute ceiling of the 980 is 39,900. The Commander 840 cruises at 267 knots at 31,000 ft. Maximum takeoff weight for the 290B, 840 and 980 is 10,325 pounds, but empty-equipped weights for the new ones are down, by 295 pounds on the 840 (6,545 lb) and 255 on the 980 (6,585 lb). Rate of climb has changed little. On both engines, both new airplanes produce 2,840 fpm at sea level; with one dead at 5,000 feet, 900 fpm. Single-engine ceiling, however, has risen on the 980- to 26,000 feet compared with 19,600 for the 690B and 20,400 for the 840.

AE-840
Engines: 2 x Garrett TPE-331-5-524K, 718 shp
Props: Dowty Rotol 3-blade, 106-in
Seats: 7/9
Length: 43 ft
Height: 15 ft
Wingspan: 52.1 ft
Wing area: 279 sq.ft
Wing aspect ratio: 9.8
Maximum ramp weight: 10,375 lbs
Maximum takeoff weight: 10,375 lbs
Standard empty weight: 6635 lbs
Maximum useful load: 3740 lbs
Zero-fuel weight: 8463 lbs
Maximum landing weight: 9675 lbs
Wing loading: 37 lbs/sq.ft
Power loading: 7.2 lbs/hp
Maximum usable fuel: 2848 lbs / 420 USG
Rate of climb sea level: 2,840 fpm     
Certificated ceiling: 31,000 ft
Max pressurisation differential: 5.2 psi
8000 ft cabin alt @: 23,900 ft
Maximum single-engine rate of climb: 1003 fpm @ 115 kts
SE ROC 5,000 ft:     900 fpm
Single-engine climb gradient: 523 ft/nm
Single-engine ceiling: 21,050 ft
Maximum speed: 290 kts
Normal cruise @ 31,000ft: 269 kts
Fuel flow @ normal cruise: 378 pph
Endurance at normal cruise: 7 hrs
Max range with res: 1,780 nm
Stalling speed clean: 77 kts
Stalling speed gear/flaps down: 75 kts
Turbulent-air penetration speed: 180 kts
Baggage volume:    75 cubic feet
Takeoff distance (50ft): 1,830 ft
Landing distance (50ft): 2,050ft  

AE-980
Engines: 2 x Garrett TPE-331-10-501K, 733 shp
Props: Dowty Rotol 3-blade, 106-in
Seats: 7/9
Length: 43 ft
Height: 15 ft
Wingspan: 52.1 ft
Wing area: 279 sq.ft
Wing aspect ratio: 9.8
Maximum ramp weight: 10,375 lbs
Maximum takeoff weight: 10,325 lbs
Standard empty weight: 6733 lbs
Maximum useful load: 3642 lbs
Zero-fuel weight: 8463 lbs
Maximum landing weight: 9675 lbs
Wing loading: 37 lbs/sq.ft
Power loading: 7 lbs/hp
Maximum usable fuel: 3176 lbs / 420 USG
Best rate of climb: 2777fpm
Certificated ceiling: 31,000 ft
Absolute ceiling:    39,900 ft
Max pressurisation differential: 5.2 psi
8000 ft cabin alt @: 23,900 ft
Maximum single-engine rate of climb: 982 fpm @ 115 kts
Single-engine climb gradient: 512 ft/nm
Single-engine ceiling: 24,850 ft
Maximum speed: 309 kts
Normal cruise @ 31,000ft: 295 kts
Fuel flow @ normal cruise: 444 pph
Endurance at normal cruise: 6.6 hrs
Stalling speed clean: 77 kts
Stalling speed gear/flaps down: 75 kts
Turbulent-air penetration speed: 180 kts
Takeoff distance (50ft): 1,830 ft
Landing distance (50ft): 2,150 ft
Baggage volume:    75 cu.ft    

Commander 980
Engines: 2 x Garrett TPE 331-10, 980 shp
Props: Dowty Rotol 3-blade, 106-in. dia
TBO: 3, 000 hrs
Length: 43 ft
Height: 15 ft
Wingspan: 52 ft
Wing area: 280 sq. ft
Max ramp wt: 10,375 lbs
Max takeoff wt: 10,325 lb
Std empty wt: 6,298 lb
Max useful load: 4,027 lb
Max landing wt: 9,675 lb
Wing loading: 36.96 lb/sq.ft
Power loading: 7.22 lb/hp
Max usable fuel: 420 USG/2,814 lb
Max rate of climb, sea level: 2,840 fpm
Max rate of climb, 8,000 ft: 2,710 fpm
Max operating altitude: 31,000 ft
Single-engine rate of climb, sea level: 1,010 fpm
Single-engine climb gradient, sea level: 578 ft/nm
Single-engine service ceiling: 26,000 ft
Max speed: 315 kts
Cruise, max cruise power at 31,000 ft: 300 kts
Fuel flow at max cruise power: 492 pph
Endurance at max cruise power, no res: 5.7 hrs
Stalling speed, clean: 77 kts
Stalling speed, flaps down: 75 kts
Turbulent-air penetration speed: 184 kt

 

 

 


Copyright © 2017 all-aero. All Rights Reserved.
Joomla! is Free Software released under the GNU General Public License.