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Convair YB-60, 49-2676

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First flight of Convair YB-60, 49-2676 First flight of Convair YB-60, 49-2676. Beryl Erickson was the pilot on the first flight of the YB-60 on April 18, 1952, three days after the first flight of the Boeing YB-52 Stratofortress.

Wingspan: 206 feet

Length: 171 feet

Wing Area: 5,239 square feet

Maximum Take-off Weight: 410,000 pounds

Maximum Bomb Payload: 72,000 pounds

Powerplant: 8x 8,700 pound J57-P-3 turbojets

Convair YB-60, 49-2676  in flight over Texas The YB-60, 49-2676 was Convair's alternative to the Boeing B-52 Stratofortress. It is seen here in flight over Texas.

The cruise speed of the YB-60 was only 467 miles per hour compared to the Stratofortress's cruise speed of 521 miles per hour. The flight controls had been designed for operation at much lower airspeeds, so the control forces were very high and the response of the airplane was slow. Photo courtesy AFFTC/HO.

The stalling speed of the YB-60 was 140 miles per hour.  That is about 30 miles per hour slower than the stalling speed of the B-52.  The wing of the YB-60 (5,239 square feet) was much larger than the wing of the B-52 (4,000 square feet) and the maximum weight of the YB-60 was only 410,000 pounds compared to the maximum gross weight of 450,000 pounds for the B-52.

Convair YB-60, 49-2676  in flight over Texas Convair made 20 test flights of the YB-60 and accumulated 66 hours of flight time. The Air Force cancelled the B-60 production program on August 14, 1952. Photo courtesy AFFTC/HO.

Convair YB-60 on Edwards Air Force Base flightline in January 1953 YB-60 on Edwards Air Force Base old south base flightline. It was assigned to Edwards Air Force Base in January 1953 for the Phase II tests of the type. Lt. Col. Boyd L. Grubaugh was the flight test pilot and Frederick N. Stoliker was the flight test engineer. Photo courtesy AFFTC/HO.

Convair YB-60 on Edwards Air Force Base flightline in January 1953 YB-60 and B-36F-5, 49-2683 on Edwards Air Force Base south base flightline. Photo courtesy AFFTC/HO.

Convair YB-60 takes off from Edwards Air Force Base in January 1953 YB-60 takes off from the old main runway of Edwards Air Force Base. Photo courtesy AFFTC/HO.

Convair YB-60 in flight over the Mojave Desert YB-60 in flight. Only four flights of the Phase II test series had been completed when the Air Research and Development Command cancelled the test program on January 20, 1953. The YB-60 was flown for fifteen hours and forty-five minutes in the course of the four flights. Photo courtesy AFFTC/HO.

Convair YB-60 in flight over Kramers Junction northeast of Edwards Air Force Base in January 1953. YB-60 in flight over Kramers Junction at the intersection of Highways 58 and 395 northeast of Edwards Air Force Base. Photo courtesy AFFTC/HO.

Night shot of Convair YB-60 at Edwards AFB in January 1953 Night shot of YB-60 on south base ramp. Photo courtesy AFFTC/HO.

Convair YB-60 at Edwards AFB in January 1953 There's a new sheriff in town. The cowboy in the foreground is Bill Whiteside, the son of Walter W. Whiteside, the chief maintenance officer at Edwards in the early 50's. The photo appeared on the front page of the Edwards Air Force Base paper and possibly on the front page of the Air Force Times. Note the enormous hydrogen bomb test shape just to the left of the access stand. Photo courtesy AFFTC/HO.

Convair YB-60 over Rogers Dry Lake in January 1953 Rare color photo of the YB-60 over Rogers Dry Lake on the approach to the old main runway. Photo courtesy AFFTC/HO.

Giant Jet Airplanes

  First Flight Wing Span Length Wing Area Gross Weight Engines
Boeing 787-9 Dreamliner

?

197ft, 03in

206ft

3,501

545,000

2 x 71,000 lb General Electric GEnx or Rolls-Royce Trent 1000
Boeing 747-8 Jumbo Jet

2010

224ft,07in

250ft,02in

?

975,000

4 x 66,500 GEnx-2B67
Boeing 787-8 Dreamliner

2009

197ft, 03in

186ft

3,501

502,500

2 x 64,000 lb General Electric GEnx or Rolls-Royce Trent 1000
Airbus A380

2005

261ft,10in

239ft,06in

9,100

1,235,000

4 x 84,000 lb RR Trent 900 or Engine Alliance GP-7200
Boeing 777-300ER

2003

212ft,07in

242ft,04in

4,700

775,000

2 x 115,300 lb GE90-115B
Airbus A340-600

2001

208ft,02in

247ft,01in

4,729

811,300

4 x 56,000 lb RR Trent 556
Boeing 777-200

1994

209ft,01in

199ft,11in

4,605

545,000

2 x 74,000 lb PW4074, GE90-75B, or RR Trent 875
Airbus A330-300

1992

197ft,10in

208ft,10in

3,892

507,000

2 x 51,590 lb GE CF6-80E, PW4000, or RR Trent 700
Boeing 747-400 Jumbo Jet

1988

211ft,05in

231ft,10in

5,650

833,000

4 x 45,000 PW4062 or GE CF6-80C2B1F
Antonov An-225 Mryia

1988

290ft,00in

275ft,07in

10,280

1,300,000

6 x 51,590 lb DT-18T
Antonov An-124 Ruslan

1984

240ft,00in

227ft,00in

6,760

890,000

4 x 51,590 lb DT-18T
Tupolev 160 Blackjack 1981 182ft, 09in 177ft, 06in 3,660 606,000 4 x 50,900 lb NK-321
Lockheed C-5A Galaxy

1968

222ft,08in

247ft,10in

6,200

769,000

4 x 50,000 lb GE TF-39
Boeing 747-100 Jumbo Jet

1968

195ft,08in

231ft,04in

5,500

850,000

4 x 50,000 lb P&W JT9D
Antonov An-22 Antheus

1965

211ft,04in

189ft,07in

3,713

550,000

4 x 15,000 shp Kuznetsov NK-12MV
North American XB-70A Valkyrie

1964

105ft,00in

189ft,00in

6,297

530,000

6 x 33,000,lb J-93
Boeing B-52 Stratofortress

1952

185ft,00in

157ft,07in

4,000

450,000

8 x 8,000 lb J-57
Convair YB-60

1952

206ft,05in

175ft,02in

5,239

410,000

8 x 8,000 lb J-57


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B-36: Saving the Last Peacemaker The history of the efforts to preserve B-36J, 52-22827 at Fort Worth is well documented in "B-36: Saving the Last Peacemaker"; Second Edition, an html book on CD.


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